[mythtv-commits] Ticket #11026: mythpreviewgen is run with too high a scheduling priority; causes stuttering playback
MythTV
noreply at mythtv.org
Tue Aug 21 14:33:49 UTC 2012
#11026: mythpreviewgen is run with too high a scheduling priority; causes
stuttering playback
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Reporter: O Lupton <oliverlupton@…> | Owner:
Type: Bug Report - General | Status: new
Priority: minor | Milestone: unknown
Component: MythTV - Mythpreviewgen | Version: 0.25-fixes
Severity: medium | Resolution:
Keywords: mythpreviewgen, nice, ionice | Ticket locked: 0
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Comment (by J.Pilk@…):
My mythcutprojectx script calls mythpreviewgen with ionice -c3, (idle). I
use it regularly and I haven't noticed stuttering; but recently danielk
pointed out that ionice only works with the default 'cfp' scheduler,
whereas I have for years used 'escalator=deadline' when booting the
kernel. I use ionice -c3 in several other places too, but wonder if I
ought to be using something else. It certainly doesn't deliver on this
quote from 'man ionice' : "The impact of an idle I/O process on normal
system activity should be zero."
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Ticket URL: <http://code.mythtv.org/trac/ticket/11026#comment:1>
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