Re: mplayer + heavy io: why ionice doesn't help?

From: Jan Engelhardt
Date: Sun Aug 20 2006 - 04:22:29 EST

>It helps. mplayer skips much less, but still some skipping is present.

Try with -ao alsa, then it should skip less, or at least, if it skip, skip
back so that less audio is lost.
When playing audio-only files, it is always wise to specify e.g. -cache 320
which proved to be a good value for my workloads.

>I experimented with forcing entire file to be present in the
>pagecache, and in this case mplayer almost never skips.
>Looks like mplayer have very little tolerance for reads
>randomly taking more time to read input stream.
>However, I then looked into the mplayer's source
>(I wondered why it doesn't do read buffering itself)...
>The code is, um, less than pretty.

Jan Engelhardt
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