[mythtv-commits] Re: Ticket #551: Scheduler consuming all CPU cycles and disk bandwidth (via mysql).

[MythTV]

#551: Scheduler consuming all CPU cycles and disk bandwidth (via mysql).
-----------------------+----------------------------------------------------
 Reporter:  anonymous  |        Owner:  gigem
     Type:  defect     |       Status:  new  
 Priority:  critical   |    Milestone:  0.19 
Component:  mythtv     |      Version:  head 
 Severity:  medium     |   Resolution:       
-----------------------+----------------------------------------------------
Changes (by danielk):

  * keywords:  threadedfilewriter blocking => blocking scheduler
  * summary:  blocking in ThreadedFileWriter => Scheduler consuming all CPU
              cycles and disk bandwidth (via mysql).
  * status:  assigned => new
  * owner:  danielk => gigem

Comment:

 I'm reassigning this to gigem, this is looking like a scheduler problem
 now.

 It looks like the scheduler is consuming alot of CPU, but the scheduler is
 running at a lower threading priority so I don't think its CPU use is
 actually causing the problem.

 I think the reason it blocks the ThreadedFileWriter is probably because it
 uses the mysql server which both uses the filesystem and is running at the
 same priority as the the file writer.

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Ticket URL: <http://svn.mythtv.org/trac/ticket/551>
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