How can I give eclipse more memory than 512M

Question

I have following setup  but when I put 1024 and replace all 512 with 1024  then eclipse won t start at all  How can I have more than 512M memory for my eclipse JVM   -startup plugins org eclipse equinox launcher 1 0 201 R35x v20090715 jar --launcher library plugins org eclipse equinox launcher win32 win32 x86 1 0 200 v20090519 -product com springsource sts ide --launcher XXMaxPermSize 512M -vm C  Program Files  x86  Java jdk1 6 0 18 bin javaw  -vmargs -Dosgi requiredJavaVersion 1 5 -Xms512m -Xmx512m -XX MaxPermSize 512m

User · Answer

Care and feeding of Eclipse s memory hunger is a pain      http   www eclipsezone com eclipse forums t104307 html https   bugs eclipse org bugs show bug cgi id 188968 https   bugs eclipse org bugs show bug cgi id 238378   More or less  keep trying smaller amounts til it works  that s your max

User · Answer

You can copy this to your eclipse ini file to have 1024M   -clean -showsplash org eclipse platform --launcher XXMaxPermSize 256m -vmargs -Xms512m -Xmx1024m -XX PermSize 128m -XX MaxPermSize 256m

User · Answer

Here is how i increased the memory allocation of eclipse Juno      I have a total of 4GB on my system and when im working on eclipse  i dont run any other heavy softwares along side it  So I allocated 2Gb   The thing i noticed is that the difference between min and max values should be of 512  The next value should be let say 2048 min   512   2560max  Here is the heap value inside eclipse after setting -Xms2048m -Xmx2560m

User · Answer

While working on an enterprise project in STS  heavily Eclipse based  I was crashing constantly and STS plateaued at around 1GB of RAM usage  I couldn t add new  war files to my local tomcat server and after deleting the tomcat folder to re-add it  found I couldn t re-add it either  Essentially almost anything that required a new popup besides the main menus was causing STS to freeze up   I edited the STS ini  your Eclipse ini can be configured similarly  to   --launcher XXMaxPermSize 1024M -vmargs -Xms1536m -Xmx2048m -XX MaxPermSize 1024m  Rebooted STS immediately and saw it plateau at about 1 5 gigs before finally not crashing

User · Answer

I don t think you need to change the MaxPermSize to 1024m   This works for me   -startup plugins org eclipse equinox launcher 1 0 200 v20090520 jar --launcher library plugins org eclipse equinox launcher win32 win32 x86 1 0 200 v20090519 -product org eclipse epp package jee product --launcher XXMaxPermSize 256M -showsplash org eclipse platform --launcher XXMaxPermSize 256m -vmargs -Dosgi requiredJavaVersion 1 5 -Xms256m -Xmx1024m -XX PermSize 64m -XX MaxPermSize 128m

User · Answer

Configuring this worked for me  -vmargs -Xms1536m -Xmx2048m -XX MaxPermSize 1024m on Eclipse Java Photon June 2018     Running Windows 10  8 GB ram and 64 bit    You can extend -Xmx2048 -XX MaxpermSize  1024m to 4096m too  if your computer has good ram Mine worked well

User · Answer

I ve had a lot of problems trying to get Eclipse to accept as much memory as I d like it to be able to use  between 2 and 4 gigs for example    Open eclipse ini in the Eclipse installation directory  You should be able to change the memory sizes after -vmargs up to 1024 without a problem up to some maximum value that s dependent on your system   Here s that section on my Linux box   -vmargs -Dosgi requiredJavaVersion 1 5 -XX MaxPermSize 512m -Xms512m -Xmx1024m   And here s that section on my Windows box   -vmargs -Xms256m -Xmx1024m   But  I ve failed at setting it higher than 1024 megs  If anybody knows how to make that work  I d love to know   EDIT  32bit version of juno seems to not accept more than Xmx1024m where the 64 bit version accept 2048   EDIT  Nick s post contains some great links that explain two different things    The problem is largely dependent on your system and the amount of contiguous free memory available  and  By using javaw exe  on Windows   you may be able to get a larger allocated block of memory    I have 8 gigs of Ram and can t set -Xmx to more than 1024 megs of ram  even when a minimal amount of programs are loaded and both windows linux report between 4 and 5 gigs of free ram

[eclipse] How can I give eclipse more memory than 512M?

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