From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262370AbUGMCwn (ORCPT ); Mon, 12 Jul 2004 22:52:43 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262450AbUGMCwn (ORCPT ); Mon, 12 Jul 2004 22:52:43 -0400 Received: from viper.oldcity.dca.net ([216.158.38.4]:53691 "HELO viper.oldcity.dca.net") by vger.kernel.org with SMTP id S262370AbUGMCwk (ORCPT ); Mon, 12 Jul 2004 22:52:40 -0400 Subject: Re: [linux-audio-dev] Re: [announce] [patch] Voluntary Kernel Preemption Patch From: Lee Revell To: Andrew Morton Cc: linux-audio-dev@music.columbia.edu, mingo@elte.hu, arjanv@redhat.com, linux-kernel@vger.kernel.org In-Reply-To: <20040712174639.38c7cf48.akpm@osdl.org> References: <20040709182638.GA11310@elte.hu> <20040710222510.0593f4a4.akpm@osdl.org> <1089673014.10777.42.camel@mindpipe> <20040712163141.31ef1ad6.akpm@osdl.org> <1089677823.10777.64.camel@mindpipe> <20040712174639.38c7cf48.akpm@osdl.org> Content-Type: text/plain Message-Id: <1089687168.10777.126.camel@mindpipe> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 Date: Mon, 12 Jul 2004 22:52:48 -0400 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2004-07-12 at 20:46, Andrew Morton wrote: > Lee Revell 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. > > > > > > > Interesting. There is an overwhelming consensus amongst Linux audio > > folks that you should use reiserfs for low latency work. > > It seems to be misplaced. A simple make-a-zillion-teeny-files test here > exhibits a 14 millisecond holdoff. > > > Should I try ext3? > > ext3 is certainly better than that, but still has a couple of potential > problem spots. ext2 is probably the best at this time. > Here are a few more: Jul 12 22:20:41 mindpipe kernel: ALSA /usr/src/alsa-cvs-1.0.5/alsa-driver/alsa-kernel/core/pcm_lib.c:169: XRUN: pcmC0D0p Jul 12 22:20:41 mindpipe kernel: [__crc_totalram_pages+1387264/5353478] snd_pcm_period_elapsed+0x2ca/0x410 [snd_pcm] Jul 12 22:20:41 mindpipe kernel: [__crc_totalram_pages+1455070/5353478] snd_emu10k1_interrupt+0x3c8/0x480 [snd_emu10k1] Jul 12 22:20:41 mindpipe kernel: [handle_IRQ_event+49/96] handle_IRQ_event+0x31/0x60 Jul 12 22:20:41 mindpipe kernel: [do_IRQ+155/352] do_IRQ+0x9b/0x160 Jul 12 22:20:41 mindpipe kernel: [common_interrupt+24/32] common_interrupt+0x18/0x20 Jul 12 22:20:41 mindpipe kernel: [unix_stream_recvmsg+135/1088] unix_stream_recvmsg+0x87/0x440 Jul 12 22:20:41 mindpipe kernel: [avc_has_perm+72/96] avc_has_perm+0x48/0x60 Jul 12 22:20:41 mindpipe kernel: [sock_aio_read+155/176] sock_aio_read+0x9b/0xb0 Jul 12 22:20:41 mindpipe kernel: [do_sync_read+125/192] do_sync_read+0x7d/0xc0 Jul 12 22:20:41 mindpipe kernel: [do_select+435/752] do_select+0x1b3/0x2f0 Jul 12 22:20:41 mindpipe kernel: [vfs_read+223/256] vfs_read+0xdf/0x100 Jul 12 22:20:42 mindpipe kernel: [sys_read+45/80] sys_read+0x2d/0x50 Jul 12 22:20:42 mindpipe kernel: [syscall_call+7/11] syscall_call+0x7/0xb Jul 12 22:20:42 mindpipe kernel: Jul 12 22:20:44 mindpipe kernel: ALSA /usr/src/alsa-cvs-1.0.5/alsa-driver/alsa-kernel/core/pcm_lib.c:169: XRUN: pcmC0D0p Jul 12 22:20:44 mindpipe kernel: [__crc_totalram_pages+1387264/5353478] snd_pcm_period_elapsed+0x2ca/0x410 [snd_pcm] Jul 12 22:20:44 mindpipe kernel: [__crc_totalram_pages+1455070/5353478] snd_emu10k1_interrupt+0x3c8/0x480 [snd_emu10k1] Jul 12 22:20:44 mindpipe kernel: [handle_IRQ_event+49/96] handle_IRQ_event+0x31/0x60 Jul 12 22:20:44 mindpipe kernel: [do_IRQ+155/352] do_IRQ+0x9b/0x160 Jul 12 22:20:44 mindpipe kernel: [common_interrupt+24/32] common_interrupt+0x18/0x20 Jul 12 22:20:44 mindpipe kernel: Jul 12 22:20:49 mindpipe kernel: ALSA /usr/src/alsa-cvs-1.0.5/alsa-driver/alsa-kernel/core/pcm_lib.c:169: XRUN: pcmC0D0p Jul 12 22:20:49 mindpipe kernel: [__crc_totalram_pages+1387264/5353478] snd_pcm_period_elapsed+0x2ca/0x410 [snd_pcm] Jul 12 22:20:49 mindpipe kernel: [__crc_totalram_pages+1455070/5353478] snd_emu10k1_interrupt+0x3c8/0x480 [snd_emu10k1] Jul 12 22:20:49 mindpipe kernel: [handle_IRQ_event+49/96] handle_IRQ_event+0x31/0x60 Jul 12 22:20:49 mindpipe kernel: [do_IRQ+155/352] do_IRQ+0x9b/0x160 Jul 12 22:20:49 mindpipe kernel: [common_interrupt+24/32] common_interrupt+0x18/0x20 Jul 12 22:20:49 mindpipe kernel: Lee