From: Nick Piggin <piggin@cyberone.com.au>
To: "Måns Rullgård" <mru@kth.se>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Strange xmms deaths under high disk load
Date: Tue, 27 Jan 2004 10:27:06 +1100 [thread overview]
Message-ID: <4015A24A.3090101@cyberone.com.au> (raw)
In-Reply-To: <yw1xu12i1fak.fsf@ford.guide>
Måns Rullgård wrote:
>I have encountered a very strange (to me, at least) error. I can
>reliably cause xmms to crash by simply doing some intensive disk IO.
>Copying a few hundred megabytes usually does it. After about 20
>seconds of heavy disk IO, xmms will die with this message:
>
>** WARNING **: snd_pcm_wait: Input/output error
>Xlib: unexpected async reply (sequence 0x2ef5c)!
>
>The hex number varies.
>
>The machine is an Alpha SX164 running Linux 2.6.2-rc2 patched up to
>ALSA 1.0.1. The problem has been around for quite a while, probably
>also with kernel 2.4.21, though I can't confirm that at the moment.
>The sound card is a cmi8738.
>
>If I play music with TCVP instead, it keeps playing, but sound is
>choppy at intervals. Below is vmstat output during a copying.
>
>procs -----------memory---------- ---swap-- -----io---- --system-- ----cpu----
> r b swpd free buff cache si so bi bo in cs us sy id wa
> 0 0 0 86128 3424 165920 0 0 66 66 24 4 23 23 54 0
> 0 0 0 86128 3424 165920 0 0 0 0 1131 1352 17 14 69 0
> 0 0 0 86128 3424 165920 0 0 0 0 1128 1360 13 4 84 0
> 0 0 0 86128 3424 165920 0 0 0 0 1129 1351 13 4 84 0
> 0 0 0 86128 3424 165920 0 0 0 153 1142 1361 14 3 83 0
> 0 0 0 86128 3424 165920 0 0 0 0 1127 1353 14 4 83 0
> 0 0 0 86128 3424 165920 0 0 0 0 1128 1348 12 3 84 0
> 0 0 0 86128 3424 165920 0 0 0 0 1130 1344 17 15 69 0
> 0 0 0 86000 3424 166048 0 0 128 0 1132 1356 13 3 84 0
>
...
>11 2 0 2400 3392 246368 0 0 768 26112 969 626 25 71 0 3
>
...
>11 0 0 3040 1704 248160 0 0 0 33704 696 58 10 90 0 0
>
...
>
> 1 1 0 2528 1736 250608 0 0 1756 21332 965 590 35 56 0 8
>
Looks like you might be losing timer interrupts, possibly caused
by an IDE disk doing PIO?
next prev parent reply other threads:[~2004-01-26 23:27 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-01-26 23:05 Måns Rullgård
2004-01-26 23:27 ` Nick Piggin [this message]
2004-01-26 23:45 ` Måns Rullgård
2004-01-27 10:36 Piotr Kowalczyk
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