[Tickets #11900] Apache2 - high CPU load post AS Search

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Ticket URL: http://bugs.horde.org/ticket/11900
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  Ticket             | 11900
  Created By         | horde at agotnes.com
  Summary            | Apache2 - high CPU load post AS Search
  Queue              | Synchronization
  Version            | Git master
  Type               | Bug
  State              | Unconfirmed
  Priority           | 3. High
  Milestone          |
  Patch              |
  Owners             |
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horde at agotnes.com (2012-12-17 20:24) wrote:

Running Apache 2.2.23 with PHP 5.3, ActiveSync 2.0.10 and the other  
latest Horde components.

I have seen Apache take 100% CPU on my single CPU server running  
ActiveSync a few times in the last few weeks post upgrading to Horde5.  
Today I noticed that when I performed a search on an email folder from  
an iPad using the 'Search on Server' option from the iPad Apache  
immediately went nuts.

Restarting Apache clears the issue, leaving it doesn't seem to improve  
anything and the process keeps taking large amounts of CPU.

Happy to provide further logs - I had a look through the Apache logs  
and didn't see anything remarkable, haven't had time to dig deep yet  
but raising so it can be reviewed.