How can you speed up Eclipse

Question

How can you make the experience with Eclipse faster     For instance  I disable all the plugins I don t need  Mylyn  Subclipse   hellip     Instead of using a plugin for Mercurial  I configure TortoiseHG as an external tool

User · Answer

One more trick is to disable automatic builds

User · Answer

Eclipse loads plug-ins lazily  and most common plug-ins  like Subclipse  don t do anything if you don t use them  They don t slow Eclipse down at all during run time  and it won t help you to disable them  In fact  Mylyn was shown to reduce Eclipse s memory footprint when used correctly   I run Eclipse with tons of plug-ins without any performance penalty at all    Try disabling compiler settings that you perhaps don t need  e g  the sub-options under  parameter is never read   Which version of Eclipse are you using  Older versions were known to be slow if you upgraded them over and over again  because they got their plug-ins folder inflated with duplicate plug-ins  with different versions   This is not a problem in version 3 4  Use working-sets  They work better than closing projects  particularly if you need to switch between sets of projects all the time    It s not only the memory that you need to increase with the -Xmx switch  it s also the perm gen size  I think that problem was solved in Eclipse 3 4

User · Answer

Try these  There are two ways   First Procedure  Refer this article   http   www javacodegeeks com 2014 06 the-real-way-to-make-eclipse-run-faster-on-ubuntu html  Second Procedure   Execute the command in the terminal   ramdisk   to get better performance and fast response for Ubuntu   Ramdisk is part of system memory  Ubuntu by default uses a half of physical memory  RAM  as ramdisk  and it is mounted onto      dev shm     it can be used just like normal disk space  create files and folders and manipulate them with better performance rather if they were stored on the hard disk   If ramdisk uses more than a half of RAM  data will be moved into the swap space  If ramdisk uses less  the remaining can still do what RAM   s doing   Set upper limit of ramdisk  As is said above  ramdisk by default can use a half of RAM  If you want to change the upper limit  follow the steps below    Edit  etc fstab by your favourate editor   gksudo gedit  etc fstab Find this line and change to make it looks like this add this line if not exist  and change 512M to what you like     tmpfs  dev shm tmpfs defaults size 512M 0 0 Reboot or re-mount   dev shm   Mount  tmp onto ramdisk  To make it easy to use  you can mount a directory into   dev shm   by following commands   mkdir  dev shm tmp  chmod 1777  dev shm tmp  mount --bind  dev shm tmp  tmp

User · Answer

Thanks for the hints   These options  mentioned above  helped me a lot   Windows    Increasing memory  amp  regarding to my updated Java version in eclipse ini   -Dosgi requiredJavaVersion 1 6 -Xms512m -Xmx512m -XX PermSize 512m -XX MaxPermSize 512M -Xverify none   Additionally  since we are optimizing for speed  setting -Xms to the same value as -Xmx makes the JVM start with the maximum amount of memory it is allowed to use   Linux   Ubuntu   Using  update-alternatives --config java

User · Answer

The three most influential factors for Eclipse speed are   Using the latest version of Eclipse  2020-06 as on 26 June 2020  Note that David Bala  ic s comment  July 2014  contradicts that criteria which was working six years ago    The  quot same quot  workspace in Indigo  3 7 2  SR2 loads in 4 seconds  in Kepler SR2  4 3 2  in 7 seconds and in Luna  4 4 0  in 10 seconds  All are Java EE bundles  Newer versions have more bundled plugins  but still the trend is obvious   by  quot same quot  workspace I mean  same  additionally installed  plugins used  same projects checked out from version control     Launching it with the latest JDK  Java 14 at the time of writing  which does not prevent you to compile in your Eclipse project with any other JDK you want  1 4 2  1 5  1 6 older       -vm jdk1 6 0 10 jre bin client jvm dll   Configuring the eclipse ini  see this question for a complete eclipse ini    -Xms512m   -Xmx4096m            The Xmx argument is the amount of memory Eclipse will get  in simple terms   With -Xmx4g  it gets 4  GB of RAM  etc   Note   Referring to the jvm dll has advantages    Splash screen coming up sooner  Eclipse exe in the process list instead of java exe  Firewalls  Eclipse wants access to the Internet instead of Java  Window management branding issues  especially on Windows and Mac    Dec  2020  Udo conforms in the comments  From version 4 8  Photon  an up there was a steady speed gain after each version  The main platform was optimized every release to load faster  enable more features for the dark theme and to add more features for newer Java versions for the Java development tools  Especially with-in the last 3 versions the startup time was increased a lot   There should be a significant increase in start-up time with the newest version of Eclipse 2020-12  In my experience it started a lot faster with each new version  But  There are still plug-ins which do not follow the new way of using the Eclipse API and are therefore still slow to start  Since the change to Java 11 as the minimum runtime version starting from Eclipse version 2020-09 at least the core system uses the newer features of the JVM  It is up to the providers of the other plug-ins to upgrade to newer APIs and to use the full power of modern CPUs  e g  concurrent programming model

User · Answer

There is another thing that really speeds up Eclipse on both Windows and especially Linux - putting the JVM in RAM disk   For Windows you can use the commercial RAM disk driver from Qsoft   For Linux use any of the methods described in numerous articles on the Internet  It is important to give additional space to the RAM disk that is 10  bigger than the size of the JVM   Check it out  It really makes a difference

User · Answer

A few steps I follow  if Eclipse is working slow    Any unused plugins installed in Eclipse  should uninstall them  -- Few plugins makes a lot much weight to Eclipse  Open current working project and close the remaining project  If there is any any dependency among them  just open while running  If all are Maven projects  then with miner local change in pom files  you can make them individual projects also  If you are working on independent projects  then always work on any one project in a workspace  Don t keep multiple projects in single workspace  Change the type filters  It facilitates to specify particular packages to refer always  As per my experience  don t change memory JVM parameters  It causes a lot of unknown issues except when you have sound knowledge of JVM parameters  Un-check auto build always  Particulary  Maven project s auto build is useless  Close all the files opened  just open current working files  Use Go Into Work sets  Instead of complete workbench  Most of the components of your application you can implement and test in standalone also  Learn how to run in standalone without need of server deploy  this makes your work simple and fast  -- Recently  I worked on hibernate entities for my project  two days  I did on server  i e  I changed in entities and again build and deployed on the server  it killing it all my time  So  then I created a simple JPA standalone application  and I completed my work very fast

User · Answer

While not directly related to Eclipse   If you re running Windows nbsp 7  and presumably Windows nbsp Vista   be sure to disable the file indexing of your workspace folder if your stuff is is in the default place - your home folder  Windows by default indexes everything in you home folder  and it s normally just a waste for your workspace   Right click the workspace folder in explorer   Properties -  Advanced

User · Answer

There is once more solution Delete all files from this two folders   metadata plugins org eclipse core resources history  metadata plugins org eclipse jdt core  This help for the first momment  But it still stay slow

User · Answer

Do you have a huge ram  Create a ramdisk and place there your  JDK JVM Eclipse Workspace  Make sure you persist your changes back to your HDD or commit them to VCS to avoid data-loose on power-off

User · Answer

Apart from configuring eclipse ini for memory usage  I have configured by  Start up  amp  shutdown options   My Eclipse is blazing fast now

User · Answer

I had similar slowdown and this fix applies only if you are using the C C   variant of the Eclipse  For C C   you may want to disable the indexer which is famous for CPU hog  It is the equivalent of VS intellisense  To disable CDT indexer go to Window- gt Preferences  underC C   tab select Indexer and uncheck the Enable indexer

User · Answer

I give it a ton of memory  add a -Xmx switch to the command that starts it  and try to avoid quitting and restarting it- I find the worst delays are on startup  so giving it lots of RAM lets me keep going longer before it crashes out

User · Answer

I also tuned vmargs and stuff  But what really sped up Eclipse on Windows is the  proper  configuration of the anti-virus software  You have to disable the on-demand scanning of packed files  jar files  and many files related to java are packed with PKZIP algorithm to spare space  Because Eclipse uses tons of java files  an anti-virus attempts to individually unpack and scan every one of them  So for Windows platform  turn off the on-demand scanning of packed files  otherwise Eclipse will be unusably slow  Please keep in mind  that disabling this unfortunately makes your system weaker against attacks  most of the malware use packers

User · Answer

Do you have a huge ram  Create a ramdisk and place there your  JDK JVM Eclipse Workspace  Make sure you persist your changes back to your HDD or commit them to VCS to avoid data-loose on power-off

User · Answer

Tips for making Eclipse IDE Faster     Eclipse will run faster when working with small projects  But when you have to work with large project  you will get irritated with its speed  Even with a huge RAM you will not be happy with its speed Below steps will help eclipse to increase its speed   Remove unwanted activation of some of the plugins at start-up by going to windows    preference    General    Startup and shutdown also make sure you don   t use those plugins in any of your views Disabling label decorations which is of less use for you  will also help you to gain some performance   Go to Windows    Preference    General    Appearance    Label -  Decorations Close unwanted projects and use working set option to move from one group of project to another smoothly  Configure eclipse ini which will be available in the eclipse installed location       Configuring eclipse ini should be based on your RAM    -Xms256m    -Xmx512m    -XX PermSize 512m    -XX MaxPermSize 512M   Also have a look at http   wiki eclipse org Eclipse ini for more options to configure eclipse ini    Do not keep lot of tabs opened in the editor  Better to have around 20 tabs   Regularly close the unused tabs  To open resource we can always use ctrl shift R and ctrl shift T  java resource  instead of opening lot of tabs I experienced a considerable improvement in performance when limiting the number of open tabs  In the past I frequently had 30  tabs open   You can let eclipse handle this for you automatically  Window- Preferences- Editors-  close editors automatically 8 open tabs is the amount before the    sign appears  so I set 14 as my default value  When opening more tabs  the ones the least recently accessed will be closed  When all editors are dirty or pinned   If it has unsaved modifications you can prompt to save  amp  reuse  tab will be closed  a new one will be opened in its place   Or you can open a new editor end thus increase the amount of open tabs  the unobtrusive choice   If you want to ensure some tabs never get closed autmatically  you can pin them  This by clicking on the pin icon  the rightmost icon in the toolbar  with    pin editor    as tooltiptext   Go to Windows -  Preferences -  Validation and uncheck any validators you don   t want or need  Go to Windows -  Preferences -  General -  Appearance -  and uncheck any animation you don   t want or need  Go to Windows -  Preferences -  Maven and check  do not automatically update dependencies

User · Answer

Another performance boost can be gained by disabling label decorations  Windows - gt  Preferences  General - gt  Appearance - gt  Label Decorations  and by disabling unused capabilities on startup  Windows - gt  Preferences  General - gt  Startup and Shutdown    You may also get additional performance by choosing a different garbage collection strategy depending on your JVM   If you re fed up with restart cycles you could use JavaRebel from ZeroTurnaround  That will shorten your time spent on server client restarts

User · Answer

Another performance boost can be gained by disabling label decorations  Windows - gt  Preferences  General - gt  Appearance - gt  Label Decorations  and by disabling unused capabilities on startup  Windows - gt  Preferences  General - gt  Startup and Shutdown    You may also get additional performance by choosing a different garbage collection strategy depending on your JVM   If you re fed up with restart cycles you could use JavaRebel from ZeroTurnaround  That will shorten your time spent on server client restarts

User · Answer

One more trick is to disable automatic builds

User · Answer

Disable virus scanners  or at least configure any virus scanner to not scan JAR files on read access

User · Answer

Make sure that you re using the Sun JVM to run Eclipse   On Linux  particularly Ubuntu  Eclipse is installed by default to use the open source GCJ  which has drastically poorer performance  Use update-alternatives --config java to switch to the Sun JVM to greatly improve UI snappiness in Eclipse

User · Answer

I experienced a considerable improvement in performance when limiting the number of open tabs  in the past I frequently had 30  tabs open   You can let Eclipse handle this for you automatically   Window -  Preferences -  Editors -  close editors automatically  8 open tabs is the amount before the    sign appears  so I tend to leave it at 8   When opening more tabs  the ones the least recently accessed will be closed   - When all editors are dirty or pinned  If it has unsaved modifications you can prompt to save  amp  reuse  tab will be closed  a new one will be opened in its place   Or you can open a new editor end thus increase the amount of open tabs  the unobtrusive choice    If you want to ensure some tabs never get closed autmatically  you can pin them  This by clicking on the pin icon  the rightmost icon in the toolbar  with  pin editor  as tooltiptext

User · Answer

Eclipse loads plug-ins lazily  and most common plug-ins  like Subclipse  don t do anything if you don t use them  They don t slow Eclipse down at all during run time  and it won t help you to disable them  In fact  Mylyn was shown to reduce Eclipse s memory footprint when used correctly   I run Eclipse with tons of plug-ins without any performance penalty at all    Try disabling compiler settings that you perhaps don t need  e g  the sub-options under  parameter is never read   Which version of Eclipse are you using  Older versions were known to be slow if you upgraded them over and over again  because they got their plug-ins folder inflated with duplicate plug-ins  with different versions   This is not a problem in version 3 4  Use working-sets  They work better than closing projects  particularly if you need to switch between sets of projects all the time    It s not only the memory that you need to increase with the -Xmx switch  it s also the perm gen size  I think that problem was solved in Eclipse 3 4

User · Answer

The three most influential factors for Eclipse speed are   Using the latest version of Eclipse  2020-06 as on 26 June 2020  Note that David Bala  ic s comment  July 2014  contradicts that criteria which was working six years ago    The  quot same quot  workspace in Indigo  3 7 2  SR2 loads in 4 seconds  in Kepler SR2  4 3 2  in 7 seconds and in Luna  4 4 0  in 10 seconds  All are Java EE bundles  Newer versions have more bundled plugins  but still the trend is obvious   by  quot same quot  workspace I mean  same  additionally installed  plugins used  same projects checked out from version control     Launching it with the latest JDK  Java 14 at the time of writing  which does not prevent you to compile in your Eclipse project with any other JDK you want  1 4 2  1 5  1 6 older       -vm jdk1 6 0 10 jre bin client jvm dll   Configuring the eclipse ini  see this question for a complete eclipse ini    -Xms512m   -Xmx4096m            The Xmx argument is the amount of memory Eclipse will get  in simple terms   With -Xmx4g  it gets 4  GB of RAM  etc   Note   Referring to the jvm dll has advantages    Splash screen coming up sooner  Eclipse exe in the process list instead of java exe  Firewalls  Eclipse wants access to the Internet instead of Java  Window management branding issues  especially on Windows and Mac    Dec  2020  Udo conforms in the comments  From version 4 8  Photon  an up there was a steady speed gain after each version  The main platform was optimized every release to load faster  enable more features for the dark theme and to add more features for newer Java versions for the Java development tools  Especially with-in the last 3 versions the startup time was increased a lot   There should be a significant increase in start-up time with the newest version of Eclipse 2020-12  In my experience it started a lot faster with each new version  But  There are still plug-ins which do not follow the new way of using the Eclipse API and are therefore still slow to start  Since the change to Java 11 as the minimum runtime version starting from Eclipse version 2020-09 at least the core system uses the newer features of the JVM  It is up to the providers of the other plug-ins to upgrade to newer APIs and to use the full power of modern CPUs  e g  concurrent programming model

User · Answer

If you use Maven and ivy do check out their consoles in case they are hogging processing during builds  I use ivy and on top of that I have certain JAR files  internal  changing with same version  so it has to workout all the time to fetch them    If you have defined you project on a network drive then you will also experience lag during build read write type of processes    Disable uninstall plugins you don t need  Close perpective that you don t need Close unused database connections

User · Answer

Eclipse loads plug-ins lazily  and most common plug-ins  like Subclipse  don t do anything if you don t use them  They don t slow Eclipse down at all during run time  and it won t help you to disable them  In fact  Mylyn was shown to reduce Eclipse s memory footprint when used correctly   I run Eclipse with tons of plug-ins without any performance penalty at all    Try disabling compiler settings that you perhaps don t need  e g  the sub-options under  parameter is never read   Which version of Eclipse are you using  Older versions were known to be slow if you upgraded them over and over again  because they got their plug-ins folder inflated with duplicate plug-ins  with different versions   This is not a problem in version 3 4  Use working-sets  They work better than closing projects  particularly if you need to switch between sets of projects all the time    It s not only the memory that you need to increase with the -Xmx switch  it s also the perm gen size  I think that problem was solved in Eclipse 3 4

User · Answer

In special cases  bad performance can be due to corrupt h2 or nwire databases  Read Five tips for speeding up Eclipse PDT and nWire for more information   Where I work  we are dependent on a VM to run Debian  I have installed another Eclipse version on the VM for testing purpouses  but this sometimes creates conflicts if I have the other Eclipse version running  There is a shared folder which both of the Eclipse versions shares  I accidentally left the Debian Eclipse installation running in the background once and that gave me corrupt database files

User · Answer

I also tuned vmargs and stuff  But what really sped up Eclipse on Windows is the  proper  configuration of the anti-virus software  You have to disable the on-demand scanning of packed files  jar files  and many files related to java are packed with PKZIP algorithm to spare space  Because Eclipse uses tons of java files  an anti-virus attempts to individually unpack and scan every one of them  So for Windows platform  turn off the on-demand scanning of packed files  otherwise Eclipse will be unusably slow  Please keep in mind  that disabling this unfortunately makes your system weaker against attacks  most of the malware use packers

User · Answer

Well  if you are developing a GWT application using Eclipse  then this is the way   Out of memory error in Eclipse  Also remember to add the same VM arguments to the hosted mode configuration

User · Answer

Apart from configuring eclipse ini for memory usage  I have configured by  Start up  amp  shutdown options   My Eclipse is blazing fast now

User · Answer

I experienced a considerable improvement in performance when limiting the number of open tabs  in the past I frequently had 30  tabs open   You can let Eclipse handle this for you automatically   Window -  Preferences -  Editors -  close editors automatically  8 open tabs is the amount before the    sign appears  so I tend to leave it at 8   When opening more tabs  the ones the least recently accessed will be closed   - When all editors are dirty or pinned  If it has unsaved modifications you can prompt to save  amp  reuse  tab will be closed  a new one will be opened in its place   Or you can open a new editor end thus increase the amount of open tabs  the unobtrusive choice    If you want to ensure some tabs never get closed autmatically  you can pin them  This by clicking on the pin icon  the rightmost icon in the toolbar  with  pin editor  as tooltiptext

User · Answer

I give it a ton of memory  add a -Xmx switch to the command that starts it  and try to avoid quitting and restarting it- I find the worst delays are on startup  so giving it lots of RAM lets me keep going longer before it crashes out

User · Answer

We use GIT as CVS and gradle as build tool   Symptom  In my case one specific project with   20 000 files froze using hierarchical view when navigating a directory with a lot of files    Fix   Create new Eclipse workspace Freshly clone the project into the Eclipse workspace Import project into Eclipse  in our case using Gradle import

User · Answer

Make sure that you re using the Sun JVM to run Eclipse   On Linux  particularly Ubuntu  Eclipse is installed by default to use the open source GCJ  which has drastically poorer performance  Use update-alternatives --config java to switch to the Sun JVM to greatly improve UI snappiness in Eclipse

User · Answer

The problem could be java cache  or java temporary files   Open control panel on windows  find Java panel Click Settings on General tab   Delete temprorary files  and set amount of disk space for storing temporary files od 10000MB or less  Restart eclipse  Restore all validators and you will see that speed your IDE Eclipse is ok

User · Answer

Best practices in this thread are implemented in the free Optimizer For Eclipse  from ZeroTurnaround   What does it help with    Insufficient memory allocation Class verification overhead Excessive indexes and history Obsolete or slow JDK Eclipse being out of date Lengthy build and redeploy times   For more details  check out this article from RebelLabs

User · Answer

I ve disabled all unused options in Windows   Preferences   General and it has a huge positive impact on performance  eclipse is still slow when switching tabs  I don t want to increase memory  but it s a lot faster when scrolling  Thx for the tips

User · Answer

One more trick is to disable automatic builds

User · Answer

Not to be underrated is having a fast machine  16-32 nbsp GB of RAM  SSD and a decent processor    and who0o0om there you go

User · Answer

Make sure that you re using the Sun JVM to run Eclipse   On Linux  particularly Ubuntu  Eclipse is installed by default to use the open source GCJ  which has drastically poorer performance  Use update-alternatives --config java to switch to the Sun JVM to greatly improve UI snappiness in Eclipse

User · Answer

Try this too  it will improve the performance      cleaning up indexes -  workspace   path  metadata plugins org eclipse jdt core cleaning up history -    workspace   path  metadata plugins org eclipse core resources history   Cleaning the above folders will not impact the project files

User · Answer

There could be several things that could delay the start and exit of eclipse  One of them is like familiar to what we have a lookalike in Windows  Disabling the windows animations and disabling startup activities speeds up windows to certain extent  Similar to what in eclipse we can have the same thing Windows-  General -  Preferences -  Appearance -  Turning OFF some decorative options  This would give a little boost but may not have much impact   In my opinion  the projects in the work space you might have created should be limited to certain extent or rather creating a new work space if projects are more  For instance  when you try to run a single project on server it takes less time as compared to running several projects on the same server

User · Answer

Not to be underrated is having a fast machine  16-32 nbsp GB of RAM  SSD and a decent processor    and who0o0om there you go

User · Answer

The only real way to hasten Eclipse with the standard plug-ins is to give it more memory and in some cases access to a faster storage space   defragmented hard drive    Beyond that there is not much you can do performance-wise  most standard plug-ins do not have a continuous runtime cost  even Mylyn is relatively fast    Upgrading to the latest JVM supported on your machine may help as well   Some people downgrade to older Eclipse versions to get better performance  It may also make sense to use Eclipse classic instead of the official releases

User · Answer

The only real way to hasten Eclipse with the standard plug-ins is to give it more memory and in some cases access to a faster storage space   defragmented hard drive    Beyond that there is not much you can do performance-wise  most standard plug-ins do not have a continuous runtime cost  even Mylyn is relatively fast    Upgrading to the latest JVM supported on your machine may help as well   Some people downgrade to older Eclipse versions to get better performance  It may also make sense to use Eclipse classic instead of the official releases

User · Answer

I implemented a plug-in to configure which features to be loaded in runtime to improve the performance and reduce the conflict among different plug-ins   You may have installed many features into your Eclipse  such as Android development tools  C C   development tools  PHP  SVN  Git and ClearCase plug-ins  Hence Eclipse is heavy and costs a lot of memory  and some of them are not often used   So you could use my tool to create different runtime policies  such as one that has Android  Git and base Eclipse  another one contains C C    SVN and base Eclipse  Next time Eclipse would only load the specified features if you re using the policy that only has Android and Git   You are welcome to try it and give me the feedback      The name of that tool is Equinox Advanced Configurator

User · Answer

Well  if you are developing a GWT application using Eclipse  then this is the way   Out of memory error in Eclipse  Also remember to add the same VM arguments to the hosted mode configuration

User · Answer

On Windows 8   Open Control panel  Find Windows Defender  Go to settings Exclude all folders where is your Spring Eclipse  and workspace

User · Answer

Add -Xverify none to your eclipse ini file   It will cut down your Eclipse startup time considerably  50  in my case if not more   This will tell the VM not to validate all the  class files it is loading    Consider this  Never Disable Bytecode Verification in a Production System  as mentioned in the comments

User · Answer

Close the outline view to speed up switching between editors  Each time you switch to a different tab or open a file  the outline view has to update  which on my machine took about 1 second every time  It s just 1 second  but if you change tabs very often  like me  it will save you a headache

User · Answer

On Windows 8   Open Control panel  Find Windows Defender  Go to settings Exclude all folders where is your Spring Eclipse  and workspace

User · Answer

I have tried many permutations by increasing heapspace and changing the garbage collector settings to speed up Eclipse   But for my local development  in my humble opinion  I have seen that disabling the JVM garbage collector works best for me   Mylyn autocomplete feature works with no issue and the  Not Responding  part has been significantly minimzed   Below is a snapshot of my eclipse ini file   -vm --C  JAVA jre bin server jvm dll C  JAVA8x64 jre bin server jvm dll -vmargs -Xnoclassgc -Dosgi requiredJavaVersion 1 6 -Xms256m -Xmx1024m   I have tried using JDK 6 and JDK 8  and in both cases  noticed a significant speedup

User · Answer

I have tried many permutations by increasing heapspace and changing the garbage collector settings to speed up Eclipse   But for my local development  in my humble opinion  I have seen that disabling the JVM garbage collector works best for me   Mylyn autocomplete feature works with no issue and the  Not Responding  part has been significantly minimzed   Below is a snapshot of my eclipse ini file   -vm --C  JAVA jre bin server jvm dll C  JAVA8x64 jre bin server jvm dll -vmargs -Xnoclassgc -Dosgi requiredJavaVersion 1 6 -Xms256m -Xmx1024m   I have tried using JDK 6 and JDK 8  and in both cases  noticed a significant speedup

User · Answer

The only real way to hasten Eclipse with the standard plug-ins is to give it more memory and in some cases access to a faster storage space   defragmented hard drive    Beyond that there is not much you can do performance-wise  most standard plug-ins do not have a continuous runtime cost  even Mylyn is relatively fast    Upgrading to the latest JVM supported on your machine may help as well   Some people downgrade to older Eclipse versions to get better performance  It may also make sense to use Eclipse classic instead of the official releases

User · Answer

I give it a ton of memory  add a -Xmx switch to the command that starts it  and try to avoid quitting and restarting it- I find the worst delays are on startup  so giving it lots of RAM lets me keep going longer before it crashes out

User · Answer

Close any open projects which are not in current use   Try to switch off the auto publish mode during development

User · Answer

I ve disabled all unused options in Windows   Preferences   General and it has a huge positive impact on performance  eclipse is still slow when switching tabs  I don t want to increase memory  but it s a lot faster when scrolling  Thx for the tips

User · Answer

For Windows users  If you go to Task Manager  choose the eclipse application  and click on the little arrow next to it  you will usually just see one sub-process appear below  quot eclipse exe quot   However  in my case  if you have multiple instances of  quot Java Platform SE Binary quot   then end all of them  For some reason  I had three of these running in the background  even though I wasn t currently running any projects  Nevertheless  this will boost performance back to the way it likely was when you first installed eclipse on your computer  If you can no longer run a project after the change  then try relaunching eclipse

User · Answer

Along with the latest software  latest Eclipse and Java  and more RAM  you may need to     Remove the unwanted plugins  not all need Mylyn and J2EE version of Eclipse   unwanted validators disable spell check close unused tabs in Java editor  yes it helps reducing Eclipse burden  close unused projects disable unwanted label declaration  SVN CVS  disable auto building   reference making-eclipse-ide-faster

User · Answer

In special cases  bad performance can be due to corrupt h2 or nwire databases  Read Five tips for speeding up Eclipse PDT and nWire for more information   Where I work  we are dependent on a VM to run Debian  I have installed another Eclipse version on the VM for testing purpouses  but this sometimes creates conflicts if I have the other Eclipse version running  There is a shared folder which both of the Eclipse versions shares  I accidentally left the Debian Eclipse installation running in the background once and that gave me corrupt database files

User · Answer

The three most influential factors for Eclipse speed are   Using the latest version of Eclipse  2020-06 as on 26 June 2020  Note that David Bala  ic s comment  July 2014  contradicts that criteria which was working six years ago    The  quot same quot  workspace in Indigo  3 7 2  SR2 loads in 4 seconds  in Kepler SR2  4 3 2  in 7 seconds and in Luna  4 4 0  in 10 seconds  All are Java EE bundles  Newer versions have more bundled plugins  but still the trend is obvious   by  quot same quot  workspace I mean  same  additionally installed  plugins used  same projects checked out from version control     Launching it with the latest JDK  Java 14 at the time of writing  which does not prevent you to compile in your Eclipse project with any other JDK you want  1 4 2  1 5  1 6 older       -vm jdk1 6 0 10 jre bin client jvm dll   Configuring the eclipse ini  see this question for a complete eclipse ini    -Xms512m   -Xmx4096m            The Xmx argument is the amount of memory Eclipse will get  in simple terms   With -Xmx4g  it gets 4  GB of RAM  etc   Note   Referring to the jvm dll has advantages    Splash screen coming up sooner  Eclipse exe in the process list instead of java exe  Firewalls  Eclipse wants access to the Internet instead of Java  Window management branding issues  especially on Windows and Mac    Dec  2020  Udo conforms in the comments  From version 4 8  Photon  an up there was a steady speed gain after each version  The main platform was optimized every release to load faster  enable more features for the dark theme and to add more features for newer Java versions for the Java development tools  Especially with-in the last 3 versions the startup time was increased a lot   There should be a significant increase in start-up time with the newest version of Eclipse 2020-12  In my experience it started a lot faster with each new version  But  There are still plug-ins which do not follow the new way of using the Eclipse API and are therefore still slow to start  Since the change to Java 11 as the minimum runtime version starting from Eclipse version 2020-09 at least the core system uses the newer features of the JVM  It is up to the providers of the other plug-ins to upgrade to newer APIs and to use the full power of modern CPUs  e g  concurrent programming model

User · Answer

Thanks for the hints   These options  mentioned above  helped me a lot   Windows    Increasing memory  amp  regarding to my updated Java version in eclipse ini   -Dosgi requiredJavaVersion 1 6 -Xms512m -Xmx512m -XX PermSize 512m -XX MaxPermSize 512M -Xverify none   Additionally  since we are optimizing for speed  setting -Xms to the same value as -Xmx makes the JVM start with the maximum amount of memory it is allowed to use   Linux   Ubuntu   Using  update-alternatives --config java

User · Answer

Tips for making Eclipse IDE Faster     Eclipse will run faster when working with small projects  But when you have to work with large project  you will get irritated with its speed  Even with a huge RAM you will not be happy with its speed Below steps will help eclipse to increase its speed   Remove unwanted activation of some of the plugins at start-up by going to windows    preference    General    Startup and shutdown also make sure you don   t use those plugins in any of your views Disabling label decorations which is of less use for you  will also help you to gain some performance   Go to Windows    Preference    General    Appearance    Label -  Decorations Close unwanted projects and use working set option to move from one group of project to another smoothly  Configure eclipse ini which will be available in the eclipse installed location       Configuring eclipse ini should be based on your RAM    -Xms256m    -Xmx512m    -XX PermSize 512m    -XX MaxPermSize 512M   Also have a look at http   wiki eclipse org Eclipse ini for more options to configure eclipse ini    Do not keep lot of tabs opened in the editor  Better to have around 20 tabs   Regularly close the unused tabs  To open resource we can always use ctrl shift R and ctrl shift T  java resource  instead of opening lot of tabs I experienced a considerable improvement in performance when limiting the number of open tabs  In the past I frequently had 30  tabs open   You can let eclipse handle this for you automatically  Window- Preferences- Editors-  close editors automatically 8 open tabs is the amount before the    sign appears  so I set 14 as my default value  When opening more tabs  the ones the least recently accessed will be closed  When all editors are dirty or pinned   If it has unsaved modifications you can prompt to save  amp  reuse  tab will be closed  a new one will be opened in its place   Or you can open a new editor end thus increase the amount of open tabs  the unobtrusive choice   If you want to ensure some tabs never get closed autmatically  you can pin them  This by clicking on the pin icon  the rightmost icon in the toolbar  with    pin editor    as tooltiptext   Go to Windows -  Preferences -  Validation and uncheck any validators you don   t want or need  Go to Windows -  Preferences -  General -  Appearance -  and uncheck any animation you don   t want or need  Go to Windows -  Preferences -  Maven and check  do not automatically update dependencies

User · Answer

Disable virus scanners  or at least configure any virus scanner to not scan JAR files on read access

User · Answer

This article How to quickly make eclipse faster is very useful  I tried some tips and it s true  it made my Eclipse run faster

User · Answer

Make an effort to configure your build path  Code completion uses a lot of memory if it has to go through your whole project folder    Right click on your project and choose preferences  Choose your build path setting and remove your project folder  Then add only the folders where you have your source code and library code

User · Answer

Eclipse loads plug-ins lazily  and most common plug-ins  like Subclipse  don t do anything if you don t use them  They don t slow Eclipse down at all during run time  and it won t help you to disable them  In fact  Mylyn was shown to reduce Eclipse s memory footprint when used correctly   I run Eclipse with tons of plug-ins without any performance penalty at all    Try disabling compiler settings that you perhaps don t need  e g  the sub-options under  parameter is never read   Which version of Eclipse are you using  Older versions were known to be slow if you upgraded them over and over again  because they got their plug-ins folder inflated with duplicate plug-ins  with different versions   This is not a problem in version 3 4  Use working-sets  They work better than closing projects  particularly if you need to switch between sets of projects all the time    It s not only the memory that you need to increase with the -Xmx switch  it s also the perm gen size  I think that problem was solved in Eclipse 3 4

User · Answer

One more trick is to disable automatic builds

User · Answer

The problem could be java cache  or java temporary files   Open control panel on windows  find Java panel Click Settings on General tab   Delete temprorary files  and set amount of disk space for storing temporary files od 10000MB or less  Restart eclipse  Restore all validators and you will see that speed your IDE Eclipse is ok

User · Answer

The three most influential factors for Eclipse speed are   Using the latest version of Eclipse  2020-06 as on 26 June 2020  Note that David Bala  ic s comment  July 2014  contradicts that criteria which was working six years ago    The  quot same quot  workspace in Indigo  3 7 2  SR2 loads in 4 seconds  in Kepler SR2  4 3 2  in 7 seconds and in Luna  4 4 0  in 10 seconds  All are Java EE bundles  Newer versions have more bundled plugins  but still the trend is obvious   by  quot same quot  workspace I mean  same  additionally installed  plugins used  same projects checked out from version control     Launching it with the latest JDK  Java 14 at the time of writing  which does not prevent you to compile in your Eclipse project with any other JDK you want  1 4 2  1 5  1 6 older       -vm jdk1 6 0 10 jre bin client jvm dll   Configuring the eclipse ini  see this question for a complete eclipse ini    -Xms512m   -Xmx4096m            The Xmx argument is the amount of memory Eclipse will get  in simple terms   With -Xmx4g  it gets 4  GB of RAM  etc   Note   Referring to the jvm dll has advantages    Splash screen coming up sooner  Eclipse exe in the process list instead of java exe  Firewalls  Eclipse wants access to the Internet instead of Java  Window management branding issues  especially on Windows and Mac    Dec  2020  Udo conforms in the comments  From version 4 8  Photon  an up there was a steady speed gain after each version  The main platform was optimized every release to load faster  enable more features for the dark theme and to add more features for newer Java versions for the Java development tools  Especially with-in the last 3 versions the startup time was increased a lot   There should be a significant increase in start-up time with the newest version of Eclipse 2020-12  In my experience it started a lot faster with each new version  But  There are still plug-ins which do not follow the new way of using the Eclipse API and are therefore still slow to start  Since the change to Java 11 as the minimum runtime version starting from Eclipse version 2020-09 at least the core system uses the newer features of the JVM  It is up to the providers of the other plug-ins to upgrade to newer APIs and to use the full power of modern CPUs  e g  concurrent programming model

User · Answer

If you use Maven and ivy do check out their consoles in case they are hogging processing during builds  I use ivy and on top of that I have certain JAR files  internal  changing with same version  so it has to workout all the time to fetch them    If you have defined you project on a network drive then you will also experience lag during build read write type of processes    Disable uninstall plugins you don t need  Close perpective that you don t need Close unused database connections

User · Answer

Close any open projects which are not in current use   Try to switch off the auto publish mode during development

User · Answer

If you re not bound to Eclipse for reasons like work  some plug-in functionality you need that s only available through Eclipse and so forth  then one a possible strategy is to get rid of Eclipse altogether  This will speed up things tremendously   You could switch to any other IDE or development environment that does what you need  One example would be NetBeans  Some proposed speed-ups also apply to NetBeans  or any other IDE for that matter   One example that applies directly to Linux  is to move as much as possible to a tmpfs mount  For Java development in NetBeans  I ve moved the Java documentation and source to a tmpfs mount which resulted in an enormous performance boost   Likewise  during C   development I ll make sure the whole source tree is in my tmpfs mount if possible  Although I haven t extensively benchmarked build performance  a few tests on a reasonably sized codebase  few hundred source files   headers  resulted in a  50  decrease in compilation time   Do keep in mind that your data will not persist during a power loss when using this method  To combat this  one could create a script that rsyncs the tmpfs mount to some backup-directory and add that script as a cronjob that runs every minute

User · Answer

A few steps I follow  if Eclipse is working slow    Any unused plugins installed in Eclipse  should uninstall them  -- Few plugins makes a lot much weight to Eclipse  Open current working project and close the remaining project  If there is any any dependency among them  just open while running  If all are Maven projects  then with miner local change in pom files  you can make them individual projects also  If you are working on independent projects  then always work on any one project in a workspace  Don t keep multiple projects in single workspace  Change the type filters  It facilitates to specify particular packages to refer always  As per my experience  don t change memory JVM parameters  It causes a lot of unknown issues except when you have sound knowledge of JVM parameters  Un-check auto build always  Particulary  Maven project s auto build is useless  Close all the files opened  just open current working files  Use Go Into Work sets  Instead of complete workbench  Most of the components of your application you can implement and test in standalone also  Learn how to run in standalone without need of server deploy  this makes your work simple and fast  -- Recently  I worked on hibernate entities for my project  two days  I did on server  i e  I changed in entities and again build and deployed on the server  it killing it all my time  So  then I created a simple JPA standalone application  and I completed my work very fast

User · Answer

We use GIT as CVS and gradle as build tool   Symptom  In my case one specific project with   20 000 files froze using hierarchical view when navigating a directory with a lot of files    Fix   Create new Eclipse workspace Freshly clone the project into the Eclipse workspace Import project into Eclipse  in our case using Gradle import

User · Answer

While not directly related to Eclipse   If you re running Windows nbsp 7  and presumably Windows nbsp Vista   be sure to disable the file indexing of your workspace folder if your stuff is is in the default place - your home folder  Windows by default indexes everything in you home folder  and it s normally just a waste for your workspace   Right click the workspace folder in explorer   Properties -  Advanced

User · Answer

Close the outline view to speed up switching between editors  Each time you switch to a different tab or open a file  the outline view has to update  which on my machine took about 1 second every time  It s just 1 second  but if you change tabs very often  like me  it will save you a headache

User · Answer

Close any open projects which are not in current use   Try to switch off the auto publish mode during development

User · Answer

Make sure that you re using the Sun JVM to run Eclipse   On Linux  particularly Ubuntu  Eclipse is installed by default to use the open source GCJ  which has drastically poorer performance  Use update-alternatives --config java to switch to the Sun JVM to greatly improve UI snappiness in Eclipse

User · Answer

Increase your RAM to more than 8 nbsp GB and disable autobuild project  This worked for me

User · Answer

If you re not bound to Eclipse for reasons like work  some plug-in functionality you need that s only available through Eclipse and so forth  then one a possible strategy is to get rid of Eclipse altogether  This will speed up things tremendously   You could switch to any other IDE or development environment that does what you need  One example would be NetBeans  Some proposed speed-ups also apply to NetBeans  or any other IDE for that matter   One example that applies directly to Linux  is to move as much as possible to a tmpfs mount  For Java development in NetBeans  I ve moved the Java documentation and source to a tmpfs mount which resulted in an enormous performance boost   Likewise  during C   development I ll make sure the whole source tree is in my tmpfs mount if possible  Although I haven t extensively benchmarked build performance  a few tests on a reasonably sized codebase  few hundred source files   headers  resulted in a  50  decrease in compilation time   Do keep in mind that your data will not persist during a power loss when using this method  To combat this  one could create a script that rsyncs the tmpfs mount to some backup-directory and add that script as a cronjob that runs every minute

User · Answer

Increase your RAM to more than 8 nbsp GB and disable autobuild project  This worked for me

User · Answer

There is once more solution Delete all files from this two folders   metadata plugins org eclipse core resources history  metadata plugins org eclipse jdt core  This help for the first momment  But it still stay slow

User · Answer

Try these  There are two ways   First Procedure  Refer this article   http   www javacodegeeks com 2014 06 the-real-way-to-make-eclipse-run-faster-on-ubuntu html  Second Procedure   Execute the command in the terminal   ramdisk   to get better performance and fast response for Ubuntu   Ramdisk is part of system memory  Ubuntu by default uses a half of physical memory  RAM  as ramdisk  and it is mounted onto      dev shm     it can be used just like normal disk space  create files and folders and manipulate them with better performance rather if they were stored on the hard disk   If ramdisk uses more than a half of RAM  data will be moved into the swap space  If ramdisk uses less  the remaining can still do what RAM   s doing   Set upper limit of ramdisk  As is said above  ramdisk by default can use a half of RAM  If you want to change the upper limit  follow the steps below    Edit  etc fstab by your favourate editor   gksudo gedit  etc fstab Find this line and change to make it looks like this add this line if not exist  and change 512M to what you like     tmpfs  dev shm tmpfs defaults size 512M 0 0 Reboot or re-mount   dev shm   Mount  tmp onto ramdisk  To make it easy to use  you can mount a directory into   dev shm   by following commands   mkdir  dev shm tmp  chmod 1777  dev shm tmp  mount --bind  dev shm tmp  tmp

User · Answer

There could be several things that could delay the start and exit of eclipse  One of them is like familiar to what we have a lookalike in Windows  Disabling the windows animations and disabling startup activities speeds up windows to certain extent  Similar to what in eclipse we can have the same thing Windows-  General -  Preferences -  Appearance -  Turning OFF some decorative options  This would give a little boost but may not have much impact   In my opinion  the projects in the work space you might have created should be limited to certain extent or rather creating a new work space if projects are more  For instance  when you try to run a single project on server it takes less time as compared to running several projects on the same server

User · Answer

This article How to quickly make eclipse faster is very useful  I tried some tips and it s true  it made my Eclipse run faster

User · Answer

For Windows users  If you go to Task Manager  choose the eclipse application  and click on the little arrow next to it  you will usually just see one sub-process appear below  quot eclipse exe quot   However  in my case  if you have multiple instances of  quot Java Platform SE Binary quot   then end all of them  For some reason  I had three of these running in the background  even though I wasn t currently running any projects  Nevertheless  this will boost performance back to the way it likely was when you first installed eclipse on your computer  If you can no longer run a project after the change  then try relaunching eclipse

User · Answer

I implemented a plug-in to configure which features to be loaded in runtime to improve the performance and reduce the conflict among different plug-ins   You may have installed many features into your Eclipse  such as Android development tools  C C   development tools  PHP  SVN  Git and ClearCase plug-ins  Hence Eclipse is heavy and costs a lot of memory  and some of them are not often used   So you could use my tool to create different runtime policies  such as one that has Android  Git and base Eclipse  another one contains C C    SVN and base Eclipse  Next time Eclipse would only load the specified features if you re using the policy that only has Android and Git   You are welcome to try it and give me the feedback      The name of that tool is Equinox Advanced Configurator

User · Answer

Add -Xverify none to your eclipse ini file   It will cut down your Eclipse startup time considerably  50  in my case if not more   This will tell the VM not to validate all the  class files it is loading    Consider this  Never Disable Bytecode Verification in a Production System  as mentioned in the comments

User · Answer

Best practices in this thread are implemented in the free Optimizer For Eclipse  from ZeroTurnaround   What does it help with    Insufficient memory allocation Class verification overhead Excessive indexes and history Obsolete or slow JDK Eclipse being out of date Lengthy build and redeploy times   For more details  check out this article from RebelLabs

User · Answer

Close any open projects which are not in current use   Try to switch off the auto publish mode during development

User · Answer

I had similar slowdown and this fix applies only if you are using the C C   variant of the Eclipse  For C C   you may want to disable the indexer which is famous for CPU hog  It is the equivalent of VS intellisense  To disable CDT indexer go to Window- gt Preferences  underC C   tab select Indexer and uncheck the Enable indexer

User · Answer

The only real way to hasten Eclipse with the standard plug-ins is to give it more memory and in some cases access to a faster storage space   defragmented hard drive    Beyond that there is not much you can do performance-wise  most standard plug-ins do not have a continuous runtime cost  even Mylyn is relatively fast    Upgrading to the latest JVM supported on your machine may help as well   Some people downgrade to older Eclipse versions to get better performance  It may also make sense to use Eclipse classic instead of the official releases

User · Answer

There is another thing that really speeds up Eclipse on both Windows and especially Linux - putting the JVM in RAM disk   For Windows you can use the commercial RAM disk driver from Qsoft   For Linux use any of the methods described in numerous articles on the Internet  It is important to give additional space to the RAM disk that is 10  bigger than the size of the JVM   Check it out  It really makes a difference

User · Answer

Make an effort to configure your build path  Code completion uses a lot of memory if it has to go through your whole project folder    Right click on your project and choose preferences  Choose your build path setting and remove your project folder  Then add only the folders where you have your source code and library code

User · Answer

Go to Windows -  Preferences -  Validation and uncheck any validators you don t want or need   For Eclipse 3 7  you use Windows -  Preferences -  General -  Startup and Shutdown

User · Answer

I give it a ton of memory  add a -Xmx switch to the command that starts it  and try to avoid quitting and restarting it- I find the worst delays are on startup  so giving it lots of RAM lets me keep going longer before it crashes out

User · Answer

Go to Windows -  Preferences -  Validation and uncheck any validators you don t want or need   For Eclipse 3 7  you use Windows -  Preferences -  General -  Startup and Shutdown

User · Answer

Try this too  it will improve the performance      cleaning up indexes -  workspace   path  metadata plugins org eclipse jdt core cleaning up history -    workspace   path  metadata plugins org eclipse core resources history   Cleaning the above folders will not impact the project files

User · Answer

Along with the latest software  latest Eclipse and Java  and more RAM  you may need to     Remove the unwanted plugins  not all need Mylyn and J2EE version of Eclipse   unwanted validators disable spell check close unused tabs in Java editor  yes it helps reducing Eclipse burden  close unused projects disable unwanted label declaration  SVN CVS  disable auto building   reference making-eclipse-ide-faster

[eclipse] How can you speed up Eclipse?

Examples related to eclipse

Examples related to performance