[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:  bjm 
     Type:  defect     |       Status:  new 
 Priority:  major      |    Milestone:  0.19
Component:  mythtv     |      Version:  head
 Severity:  medium     |   Resolution:      
-----------------------+----------------------------------------------------
Changes (by bjm):

  * owner:  gigem => bjm

Comment:

 No scheduler output from a run that took over 20 seconds has been
 provided. The only example posted were 1.1 and ~2.5 sec which proves
 nothig. Further there has been no information given about the fileystem
 layout, in particular if the /var partition with the active database files
 are on the same physical disk where two HD file are being written (or read
 and write) at the same time.

 If this were the case, the disk heads would be thrashing and could not
 keep up with the queued requests. Coding around a near failure situation
 is not a solution. For anyone having this probelm, move /var to a
 different physical disk than that of the video recording directory.


 Do not reopen this ticket without providing:

 The scheduler output as described above for a schedule run of more than 20
 seconds.

 The scheduler output from the same system when there are no recordings or
 playback in progress.

 The output of:

     cat /etc/fstab

     df /var/lib/mysql/mythconverg

     df /your/video/dir

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