Why emulator is very slow in Android Studio

Question

I just setup Android Studio on my PC  which is new launch to develop Android application   My problem is that  when I try to run my small app in emulator  it take to much time to launch and after then emulator is working slow too   AVD settings  AVD Name  Glaxy Device  Glaxy Nexus  4 65   720x 1280  xhdpi  Target  Android 4 2 2 - API Level 17 Memory Option  Ram 500  VM Heap 64 Internal Storage  200MiB    I have good window pc  Intel Core 2 Duo    2 93Ghz and Ram is 3gb  I am new in Android development and java

User · Answer

This worked for me  My size on disk was just too high for the emulator to run correctly  Wiping the data took it from 4 9 GB to 2 9 GB  Click on the AVD manager at the top right and it will pull up a screen with all your devices  In row with your device the very last icon will be a drop down arrow  click it  Click  Wipe Data  then  Cold Boot

User · Answer

Check this list    install Intel HAXM just use x86 AVD use small size screen

User · Answer

For those who enabled HAXM and the emulator still works slow here is what you should do    If Avast antivirus is running on your computer  it is most likely the culprit    as per HAXM Release Notes txt  Version 7 5 2          On Windows  Avast Antivirus may interfere with HAXM and cause Android Emulator or QEMU to run very slowly  A workaround is to uncheck  Use nested virtualization where available  in Avast Settings   Troubleshooting       So open your Avast dashboard   Menu   Settings   Troubleshooting and disable  Enable hardware-assisted virtualization      Give a higher priority to your emulator s process in the Task Manager   Locate your emulator s process in the Task Manager   Details tab   Right-click on it and Set Priority -  Above normal    Sorry that the screenshot is not in English but you got the point  right  That helped me significantly  I hope it will help you as well   Also  one thing as per the Release Notes         On Windows 8  8 1 and 10  it is recommended to disable Hyper-V from Windows Features in order for the HAXM driver to properly function       In my case  I didn t have any  Hyper-V  feature on my Windows 8 1 but you probably should try it  just in case  To locate and disable that feature see this article  https   support bluestacks com hc en-us articles 115004254383-How-do-I-disable-Hyper-V-on-Windows-

User · Answer

The Best Solution is to use Android Emulator with Intel Virtualization Technology   Now if your system have a Processor that have a feature called as Intel Virtualization Technology  then Intel X86 images will be huge benefit for you  because it supports  Intel   Hardware Accelerated Execution Manager  Intel   HAXM    To check that your processor support HAXM or not   Click Here  You need to manually install the Intel HAXM in your system  Follow these steps for that    First of all go to -  adt -  extras -  intel -  Hardware Accelerated Execution Manager Make sure that Intel Virtualization is enabled from BIOS Settings  Now install Intel HAXM in your system and select amount of memory i prefer to set it as default value   After installation create new Android Virtual Device  AVD  which should have a Target of API Level xx Now set the CPU ABI as Intel Atom x86   If you are on Windows then do not set RAM value more than 768 MB while setting up an emulator  Run the emulator  It will be blazing fast then ordinary one    Hope it will be helpful for you     Thanks

User · Answer

Try increasing your ram of intel HAXM by reinstalling it   Worked for me   In my pc HAXM setup s location was here  C-Users-Pc s name-AppData-Local-Android-sdk-extras-intel-Hardware Accelerated Execution Manager

User · Answer

In my case  the problem was coming from the execution of WinSAT exe  located in System32 folder   I disabled it and issue solved      To turn it off          Start   Task Scheduler  taskschd msc    Find Task Scheduler  Local    Task Scheduler Library   Microsoft   Windows   Maintenance   Right click WinSAT   Select disable          The Reference   Also  suppress it from Task Manager or simply reboot your machine     Point  In this situation  when the problem comes from WinSAT  emulator works  with poor performance  when you use Software - GLES 2 0 and works with very very poor performance when you use Hardware - GLES 2 0

User · Answer

I tend to load AVD through snapshot which can be setup in the AVD Manager   Choose AVD   Details      Checking Emulator Options  Snapshot  and then to run the AVD  Select AVD in AVD Manager   Start      Select Save To Snapshot and Launch from Snapshot  The first time  ensure that save to snapshot is chosen  as no snapshot exists to launch  The next time onwards choose launch from snapshot   Slightly apprehensive to suggest this as well  but I have noticed a peculiar behavior when loading and running AVD  When I have the laptop battery being charged on my Lenovo laptop - 64 bit Windows 7  4GB  2 5GHz machine  the emulator loads and runs slightly faster and also lags less  I wonder if it is the configuration on my laptop to slow down high computational processes  Would be nice to know if someone else has noticed this behavior  Unplug the charger when the AVD is loaded and see if the AVD slows down

User · Answer

I tried all the suggested remedies and none had any impact  The Android Studio emulator experience was simply unusable with my setup  Windows 10  AndroidStudio 3 5  Quadcore 3 2 Ghz  32GB with SSD drive     I tried Updating Studio  Installing Intel HAXM  Changing the memory settings via SDK  using an actual device  excluding the various folders from in the Windows Anti-virus among other things   The solution that made it work like a breeze was to exclude the Android Debug Bridge  adb exe   as a process  from the Windows Security   Virus Protection  You can either do it yourself or read the details below to know how to do it   I suggest verifying the severity of the speed issue yourself  The same will be used to verify the difference immediately after you apply the remedy  Running the options from within Android Studio just makes it more complex     Steps to check the issue    Get the path for your Android SDK Tools  You can find it from SDK Manager -  Appearance and Behavior -  System Settings -  Android SDK  Open a command prompt or terminal window  You can do right click on Windows  Start  Icon -  Run and execute  cmd   This should give you a windows command prompt or terminal window  In the terminal window  change your drive and path to your Android SDK folder using the CD command  Now change to the sub-folder Platform-tools  You will find the Android Debug Bridge  adb exe  in this folder  This plays a very crucial role in operating the emulator as well as the actual device  In the terminal window  execute the adb exe tool with the command adb  It should instantly return back with the help parameters for adb   Now execute adb exe with a command like - adb devices  This should simply stall and take several seconds to come back with the information even if you have no devices or emulator running  In my setup it took almost 30 seconds  This is the issue     Anything you do with the emulator goes via adb and gets stuck here  Once the remedy is applied  it should execute the adb devices command as instantly as the simple adb command without any parameter     Steps to remedy    Go to Windows  Virus and Threat Protection  setting  There are several ways to reach it  You can use Right Click on Windows  Start  Icon and choose Settings  Choose Update  amp  Security  then Windows Security  then Virus and Threat Protection  You will find the option Virus and Threat Protection Settings  Select it  You will find several options  look for Exclusions  Select the option Add or remove exclusions  This will take you to the list of Files  Folders  Processes which are presently excluded by the windows anti-virus  It may be empty or may have some data  Select    Add an Exclusion   You will find 4 options - File  Folder  File Type and Process  This is critical  Please choose Process  In the  Enter Process Name  input box type in the name adb exe  Please dont forget to type in the extension  just putting adb will not work  Accept the input with  Add  button    You are done  Now goto the command prompt again and follow the same steps you did earlier to check the issue  Hopefully you will be pleasantly surprised and your entire Android Studio emulator experience should become seamless   Note that the steps may slightly vary depending upon your version of Windows  Android Studio and SDK tools however it should still apply

User · Answer

Use x86 images and download  Intel Hardware Accelerated Execution Manager  from the sdk manager   See here how to enable it  http   developer android com tools devices emulator html accel-vm  Your emulator will be super fast

User · Answer

This is probably because incomplete files in your sdk   Sometimes firewall of ur office or somewhere blocks it and hence error message comes saying peer not authenticated I was facing the same problem but after downloading all the files by getting firewall access  My emulator is working properly and much faster than before

User · Answer

A quick fix if using Android Studio  or Eclipse  is to disable the boot animation   1  Select Run   Edit Configurations  2  Android Application   YOURAPP  3  Select the  Emulator  tab and check the  Disable boot animation   This is will stop the  ANDROID  image from loading and boot directly to the lock screen  then keep your the emulator open   Also  to avoid problems  don t rotate the device before launch  Cmnd   Ctrl   F11   and don t try to run the app more than once during installation

User · Answer

Just edit the AVD settings as below   Enable snapshot options and please use INTEL HAXM software for speedup just visit  https   software intel com en-us articles intel-hardware-accelerated-execution-manager-intel-haxm and download

User · Answer

Google Launches Android Studio 2 0 With Improved Android Emulator And New Instant Run Feature  New Features in Android Studio 2 0    1 Instant Run  Faster Build  amp  Deploy  You can quickly see your changes running on your device or emulator  Enable Instant Run follow this steps   1 open Settings Preferences 2 go to Build  Execution  Deployment 3 Instant Run  Click on Enable Instant  Please see this video of Instant Run --  Instant Run   2 GPU Profiler  For developers who build graphics-intensive apps and games  the Studio now also includes a new GPU profiler  This will allow developers to see exactly what   s happening every time the screen draws a new image to trace performance issues   click here  for more details about the GPU Profiler tool   Getting Started Guide for Android Emulator Preview  For more detail about android 2 0 Biggest and best update of 2015 you can see very good article Author by  nuuneoi    First Look at Android Emulator 2 0  the biggest and the best update yet in years

User · Answer

The new Android Studio incorporates very significant performance improvements for the AVDs  emulated devices    But when you initially install the Android Studio  or  when you update to a new version  such as Android Studio 2 0  which was recently released   the most important performance feature  at least if running on a Windows PC  is turned off by default   This is the HAXM emulator accelerator   Open the Android SDK from the studio by selecting its icon from the top of the display  near the right side of the icons there   then select the SDKTools tab  and then check the box for the Intel x86 Emulator Accelerator  HAXM installer   click OK   Follow instructions to install the accelerator   Be sure to completely exit Android Studio after installing  and then go to your SDK folder  C  users username AppData Local extras intel Hardware Accelerated Execution Manager  if you accepted the defaults   In this directory Go to extras intel Hardware Accelerated Execution Manager and run the file named  intelhaxm-android exe    Then  re-enter the Studio  before running the AVD again   Also  I found that when I updated from Android Studio 1 5 to version 2 0  I had to create entirely new AVDs  because all of my old ones ran so slowly as to be unusable  e g   they were still booting up after five minutes - I never got one to completely boot    As soon as I created new ones  they ran quite well

User · Answer

Check this  Why is the Android emulator so slow  How can we speed up the Android emulator   Android Emulator is very slow on most computers  on that post you can read some suggestions to improve performance of emulator  or use android x86 virtual machine

User · Answer

As  Xavi mentioned  Android Emulator is normally slow and lags a lot  Either test your app on an actual device or use an alternative emulator such as BlueStack or Android-X86   Another tip for using emulator is to not close if you ain t done testing your application  Just leave it open  In this case you skip the time it takes to launch

User · Answer

Android Development Tools  ADT  9 0 0  or later  has a feature that allows you to save state of the AVD  emulator   and you can start your emulator instantly  You have to enable this feature while creating a new AVD or you can just create it later by editing the AVD   Also I have increased the Device RAM Size to 1024 which results in a very fast emulator   Refer the given below screenshots for more information      Creating a new AVD with the save snapshot feature         Launching the emulator from the snapshot      And for speeding up your emulator you can refer to  Speed up your Android Emulator

User · Answer

Try using another android virtual device  You can create one by adding a new device by going to the AVD Manager  Select the screen size 3 2 and API-10  gingerbread    This worked for me  and it is super-fast now    P S - My laptop used to take forever to load the emulator  and It never got started due to insufficient memory 4 2   I used to get restart again and again  This solved my problem

User · Answer

The emulator is much much faster when running on Linux  In Ubuntu 13 04  it launches within 10 seconds  and it runs nearly as smoothly as on a physical device  I haven t been able to reproduce the performance on Windows   EDIT  Actually  after the first boot  when using the Atom arch  and GPU acceleration  the Windows emulator runs nearly as well as in Linux

User · Answer

Aside from what everyone has already said about HAXM and other configuration settings as solutions for this problem  my solution had nothing to do with software configuration or processor limitations    I setup Android studio on an older HDD and I had Visual Studio running an android emulator on an SSD   My bottleneck was the old HDD - the SSD I had resulted in more speed   The solution - albeit not the best for you - is to look in installing an SSD   This is not a very feasible solution in 90  of the cases but for me the root cause was linked to my hardware - not my software config   Hope this helps another person facing a similar problem

[android] Why emulator is very slow in Android Studio?

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