From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S266721AbUG0Xbv (ORCPT ); Tue, 27 Jul 2004 19:31:51 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S266725AbUG0Xbu (ORCPT ); Tue, 27 Jul 2004 19:31:50 -0400 Received: from mustang.oldcity.dca.net ([216.158.38.3]:43180 "HELO mustang.oldcity.dca.net") by vger.kernel.org with SMTP id S266721AbUG0Xbs (ORCPT ); Tue, 27 Jul 2004 19:31:48 -0400 Subject: Re: [patch] voluntary-preempt-2.6.8-rc2-L2, preemptable hardirqs From: Lee Revell To: Ingo Molnar Cc: linux-kernel , William Lee Irwin III , Lenar L?hmus , Andrew Morton , Arjan van de Ven In-Reply-To: <20040727162759.GA32548@elte.hu> References: <40F3F0A0.9080100@vision.ee> <20040713143947.GG21066@holomorphy.com> <1090732537.738.2.camel@mindpipe> <1090795742.719.4.camel@mindpipe> <20040726082330.GA22764@elte.hu> <1090830574.6936.96.camel@mindpipe> <20040726083537.GA24948@elte.hu> <1090832436.6936.105.camel@mindpipe> <20040726124059.GA14005@elte.hu> <20040726204720.GA26561@elte.hu> <20040727162759.GA32548@elte.hu> Content-Type: text/plain Message-Id: <1090971124.743.19.camel@mindpipe> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 Date: Tue, 27 Jul 2004 19:32:05 -0400 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2004-07-27 at 12:27, Ingo Molnar wrote: > i've uploaded -L2: > > http://redhat.com/~mingo/voluntary-preempt/voluntary-preempt-2.6.8-rc2-L2 > Much better. With 2:1 Bonnie produced a single XRUN: ALSA /home/rlrevell/cvs/alsa/alsa-driver/alsa-kernel/core/pcm_lib.c:139: XRUN: pcmC0D2c [] dump_stack+0x17/0x20 [] snd_pcm_period_elapsed+0x27b/0x3e0 [snd_pcm] [] snd_emu10k1_interrupt+0xd1/0x3c0 [snd_emu10k1] [] handle_IRQ_event+0x38/0x80 [] do_IRQ+0xbd/0x1a0 [] common_interrupt+0x18/0x20 [] filemap_sync_pte_range+0x9f/0xc0 [] filemap_sync+0x90/0x110 [] msync_interval+0x4b/0xe0 [] sys_msync+0x124/0x136 [] syscall_call+0x7/0xb And the mlockall/mmap2 problem is not completely solved. Starting a jackd while another is running still produces XRUNs: ALSA /home/rlrevell/cvs/alsa/alsa-driver/alsa-kernel/core/pcm_lib.c:139: XRUN: pcmC0D0p [] dump_stack+0x17/0x20 [] snd_pcm_period_elapsed+0x27b/0x3e0 [snd_pcm] [] snd_emu10k1_interrupt+0x337/0x3c0 [snd_emu10k1] [] handle_IRQ_event+0x38/0x80 [] do_IRQ+0xbd/0x1a0 [] common_interrupt+0x18/0x20 [] do_no_page+0x4e/0x310 [] handle_mm_fault+0xc1/0x170 [] get_user_pages+0x102/0x370 [] make_pages_present+0x68/0x90 [] do_mmap_pgoff+0x3e6/0x620 [] sys_mmap2+0x76/0xb0 [] syscall_call+0x7/0xb ALSA /home/rlrevell/cvs/alsa/alsa-driver/alsa-kernel/core/pcm_lib.c:139: XRUN: pcmC0D0p [] dump_stack+0x17/0x20 [] snd_pcm_period_elapsed+0x27b/0x3e0 [snd_pcm] [] snd_emu10k1_interrupt+0x337/0x3c0 [snd_emu10k1] [] handle_IRQ_event+0x38/0x80 [] do_IRQ+0xbd/0x1a0 [] common_interrupt+0x18/0x20 [] make_pages_present+0x68/0x90 [] mlock_fixup+0x8d/0xb0 [] do_mlockall+0x70/0x90 [] sys_mlockall+0x99/0xa0 [] syscall_call+0x7/0xb Works great otherwise. Lee