Messages in this thread | | | Subject | Re: [linux-audio-dev] Re: [announce] [patch] Voluntary Kernel Preemption Patch | From | Lee Revell <> | Date | Mon, 12 Jul 2004 21:01:16 -0400 |
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On Mon, 2004-07-12 at 20:06, Andrew Morton wrote: > Paul Davis <paul@linuxaudiosystems.com> wrote: > > > > >resierfs: yes, it's a problem. I "fixed" it multiple times in 2.4, but the > > >fixes ended up breaking the fs in subtle ways and I eventually gave up. > > > > andrew, this is really helpful. should we conclude that until some > > announcement from reiser that they have addressed this, the reiserfs > > should be avoided on low latency systems? > > > > It seems that way, yes. I do not know how common the holdoffs are in real > life. It would be interesting if there was a user report that switching > from reiserfs to ext2/ext3 actually made a difference - this would tell us > that it is indeed a real-world problem. >
This was not a synthetic benchmark, I would consider this a 'real-world' problem now. Repeating the test with ext3 would just tell you whether it has the same problem.
If it is neccesary to get the reiserfs issue addressed, I will repeat the test with an ext3 system in the next few days, I would like to hear from reiser on this before doing much more.
> Note that this info because available because someone set > /proc/asound/*/*/xrun_debug. We need more people doing that. > -
This goes back to the need for ALSA documentation. Someone needs to write some. This will probably require paying that person. Hopefully SuSe is working on this, though I suspect I would have heard something.
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