View source for Android Exchange Service Battery Drain and High CPU Usage

{{Android}}
==From Microsoft==
* [http://community.office365.com/en-us/wikis/exchange/2204.aspx Office 365 - Exchange ActiveSync Connectivity Issues (July 2012)]

==Source code==
* [http://www.cs.columbia.edu/~lierranli/coms6998-11Fall2012/papers/nosleep_mobisys12.pdf What is keeping my phone awake? Characterizing and Detecting No-Sleep Energy Bugs in Smartphone Apps]

* [https://android.googlesource.com/platform/packages/apps/Exchange/+log/master/exchange2/src/com/android/exchange/EasSyncService.java android / platform/packages/apps/Exchange / master / exchange2 / src / com / android / exchange /  - HISTORY]
* [https://github.com/CyanogenMod/android_packages_apps_Email/commit/f53bf8f178380ed882a0fa34e10c41f9e8242b93 CyanogenMod / android_packages_apps_Email - Android Issue #9307 fixed - Partial wake lock released]
* [http://code.google.com/p/android/issues/detail?id=9307 - Issue 9307:	Email Application Partial Wake Lock]

==???==
* [http://forum.xda-developers.com/showthread.php?t=1253583 Email app battery drain - FIXED]
* [http://forum.xda-developers.com/showpost.php?p=8007001&postcount=1 Email.apk - Gingerbread src code w/o Exchange security]
* [http://samsunggalaxysforum.net/f8/%5Bhack%5D-samsung-email-app-exchange-wakelock-bug-fix-13875.html HACK Samsung Email App - Exchange Wakelock Bug Fix]

* [http://support.microsoft.com/kb/905013 Enterprise firewall configuration for Exchange ActiveSync Direct Push Technology - Microsoft]
* [http://nicktangblog.wordpress.com/2010/05/19/enterprise-firewall-configuration-for-exchange-activesync-direct-push-technology/ Enterprise firewall configuration for Exchange ActiveSync Direct Push Technology - nicktangblock]

* [http://www.dd-wrt.com/wiki/index.php/Router_Slowdown DD-WRT Router Slowdown]

The average of the most recent heartbeat intervals [470] for request [Ping] used by clients is less than or equal to [540].
Make sure that your firewall configuration is set to work correctly with Exchange ActiveSync and direct push technology. Specifically, make sure that your firewall is configured so that requests to Exchange ActiveSync do not expire before they have the opportunity to be processed.

For more information about how to configure firewall settings when using Exchange ActiveSync, see Microsoft Knowledge Base article 905013, "Enterprise Firewall Configuration for Exchange ActiveSync Direct Push Technology" 

* [http://androidforums.com/droid-support-troubleshooting/23248-activesync-warnings-exchange-server-caused-droid-users-only.html ActiveSync warnings on exchange server caused by Droid users only]


* [http://code.google.com/p/android/issues/detail?id=37437 Issue 37437 in android: Exchange Service High CPU Usage, Battery Drain since Jelly Bean 4.1.1 Upgrade]
* [http://code.google.com/p/android/issues/detail?id=39728 Issue 39728 in android: Android 4.2 drains Galaxy Nexus battery]

android "Connection Timeout" exchange battery drain<br>
"tcp timeout" "activesync"

<google>ENGELSK</google>