Re: mplayer + heavy io: why ionice doesn't help?
From: Eric Piel
Date: Fri Aug 18 2006 - 13:58:42 EST
08/18/2006 07:37 PM, Denis Vlasenko wrote/a Ãcrit:
I noticed that mplayer's video playback starts to skip
if I do some serious copying or grepping on the disk
with movie being played from.
nice helps, but does not eliminate the problem.
I guessed that this is a problem with mplayer
failing to read next portion of input data in time,
so I used Jens's ionice.c from
I am using it this:
ionice -c1 -n0 -p<mplayer pid>
but so far I don't see any effect from using it.
mplayer still skips.
Does anybody have an experience in this?
IOnice only works with CFQ, have you checked that you are using the CFQ
# cat /sys/block/hda/queue/scheduler #put the name of YOUR harddisk
In case it's not the default IO scheduler, you can change it with:
# echo cfq > /sys/block/hda/queue/scheduler
My two cents...
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/