QA/Fennec/Sync Performance Collection: Difference between revisions

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= Profiling Sync on Fennec =  
= Profiling Sync on Fennec =


= Summary =  
= Summary =
Fennec sync continues to cause performance issues on first time syncing with very large amounts of data.  More specifically, there are still millions of javascript objects that sit on the IO thread that Garbage collection does not clean up properly.
<P> '''How you can help,''' Provide sync logging through a custom extension, and submit your data to the Mozilla Services team.  Follow the instructions below


= Get an Android Phone with Fennec running =
Fennec sync continues to cause performance issues on first time syncing with very large amounts of data. More specifically, there are still millions of javascript objects that sit on the IO thread that Garbage collection does not clean up properly.
 
 
 
= Download the extension =


'''How you can help,''' Provide sync logging through a custom extension, and submit your data to the Mozilla Services team. Follow the instructions below


= Steps to execute  =
= Steps to execute  =


#Pick a Sync account with lots of data in it. The more history, bookmarks, etc., the better.  
#Pick a Sync account with lots of data in it. The more history, bookmarks, etc., the better.  
#Install Fennec on the Android phone. If it's already installed, clear all data in Applications -&gt; Manage Applications -&gt; Fennec.  
#Install Fennec on the Android phone. If it's already installed, clear all data in Applications > Manage Applications > Fennec.  
#Reboot the phone.  
#Go to [http://bit.ly/syncaddon http://bit.ly/syncaddon] to install the sync extension
#Start up Fennec, go to http://philikon.de/files and install 'weave.xpi'
#After the add-on has been installed, restart Fennec. (Verify that the Sync add-on is installed in the add-ons manager)
#After the add-on has been installed, restart Fennec.  
#Connect to your Sync account using the easy setup (aka Jpake authentication method).  
#Verify that the Sync add-on is installed in the add-ons manager.
#Press "Sync Now" immediately after connecting
#Connect to your Sync account using the normal setup.  
#At the end of the Sync, mount the internal disk via USB and get the "sync-log-NNNN.txt" files. These files should live in your /mnt/sdcard/downloads directory.  There may be more than one file.  Just select the largest file size (eg. 800k, 1.2Mb)
#Press "Sync Now"  
#Repeat all steps for '''Three Runs''' per phone.  Then do the following:
#At the end of the Sync, mount the internal disk via USB and get the "sync-log-NNNN.txt" files. These files should live in your /mnt/sdcard/downloads directory  
#* Rename log files to phone and data in the name.  (eg. NexusS_20100309_1.txt, NexusS_20100309_2.txt, etc..) 
#Please rename them or put them in a folder so that they identify the device you tested this on, and send them to me.  
#* Email them to philikon@mozilla.com
#Repeat steps 1-9 at least twice per phone. Please make sure that you always clear Fennec's data (step 2) and reboot the phone (step 3) to get absolutely repeatable data.
#* Then, make sure that you always clear Fennec's data (step 2)  
 
#* Reboot Fennec (step 3) to get absolutely repeatable data.
= How to report =
#* when uploading your data, indicate what type of phone and build you are using.
 


= Resources =  
= Resources =
* Philikon's [https://wiki.mozilla.org/User:Philikon/SyncInstrumentation Sync Instrumentation Research]
*Philikon's [https://wiki.mozilla.org/User:Philikon/SyncInstrumentation Sync Instrumentation Research]  
* Blog on [http://philikon.wordpress.com/2011/03/09/javascript-perf-avoid-creating-objects-2/ profiling Javascript Objects]
*Blog on [http://philikon.wordpress.com/2011/03/09/javascript-perf-avoid-creating-objects-2/ profiling Javascript Objects]

Latest revision as of 19:19, 14 March 2011

Profiling Sync on Fennec

Summary

Fennec sync continues to cause performance issues on first time syncing with very large amounts of data. More specifically, there are still millions of javascript objects that sit on the IO thread that Garbage collection does not clean up properly.

How you can help, Provide sync logging through a custom extension, and submit your data to the Mozilla Services team. Follow the instructions below

Steps to execute

  1. Pick a Sync account with lots of data in it. The more history, bookmarks, etc., the better.
  2. Install Fennec on the Android phone. If it's already installed, clear all data in Applications > Manage Applications > Fennec.
  3. Go to http://bit.ly/syncaddon to install the sync extension
  4. After the add-on has been installed, restart Fennec. (Verify that the Sync add-on is installed in the add-ons manager)
  5. Connect to your Sync account using the easy setup (aka Jpake authentication method).
  6. Press "Sync Now" immediately after connecting
  7. At the end of the Sync, mount the internal disk via USB and get the "sync-log-NNNN.txt" files. These files should live in your /mnt/sdcard/downloads directory. There may be more than one file. Just select the largest file size (eg. 800k, 1.2Mb)
  8. Repeat all steps for Three Runs per phone. Then do the following:
    • Rename log files to phone and data in the name. (eg. NexusS_20100309_1.txt, NexusS_20100309_2.txt, etc..)
    • Email them to philikon@mozilla.com
    • Then, make sure that you always clear Fennec's data (step 2)
    • Reboot Fennec (step 3) to get absolutely repeatable data.
    • when uploading your data, indicate what type of phone and build you are using.

Resources

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