[Tickets #13747] Re: Speed up ActiveSync synchronisation handling

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Ticket-URL: https://bugs.horde.org/ticket/13747
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  Ticket           | 13747
  Aktualisiert Von | patrick at spamreducer.eu
  Zusammenfassung  | Speed up ActiveSync synchronisation handling
  Warteschlange    | Synchronization
  Version          | Git master
  Typ              | Enhancement
  Status           | Feedback
  Priorität        | 1. Low
  Milestone        |
  Patch            |
  Zuständige       |
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patrick at spamreducer.eu (2014-12-10 09:38) hat geschrieben:

Hi Michael,
I've done some debugging..

Your question first:
   - we are using DOVECOT, yes. (so MODSEQ should work.., HIGHMODSEQ  
is showing up on manual selecting IMAP folders over a telnet session)
   - my client is OL2013
   - we use apache as our server with a mysql backend (no special  
configuration, just default settings)

I have uploaded a zipped cachegrind file:
https://www.dropbox.com/s/c0zixz004o27ajd/mark_1_message_as_read.tgz?dl=0

I am showing just *1* thing in this debugging file: Mark 1 message as  
read in OL2013. It produces a tremendous delay of about *119seconds*  
where the CPU is spiking at 100%.

Where could I investigate further, or have you any speedup  
optimizations I could test?