From: Ingo Molnar <mingo@elte.hu>
To: Serge Belyshev <belyshev@depni.sinp.msu.ru>
Cc: Con Kolivas <kernel@kolivas.org>,
linux-kernel@vger.kernel.org,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Mike Galbraith <efault@gmx.de>
Subject: Re: Epic regression in throughput since v2.6.23
Date: Fri, 11 Sep 2009 08:10:24 +0200 [thread overview]
Message-ID: <20090911061024.GA27833@elte.hu> (raw)
In-Reply-To: <87ljkm9yew.fsf@depni.sinp.msu.ru>
* Serge Belyshev <belyshev@depni.sinp.msu.ru> wrote:
> Ingo Molnar <mingo@elte.hu> writes:
>
> > perf stat --repeat 3 make -j4 bzImage
>
> BFS hangs here:
>
> [ 128.859000] BUG: soft lockup - CPU#2 stuck for 61s! [sh:7946]
> [ 128.859016] Modules linked in:
> [ 128.859016] CPU 2:
> [ 128.859016] Modules linked in:
> [ 128.859016] Pid: 7946, comm: sh Not tainted 2.6.31-bfs211-dirty #4 GA-MA790FX-DQ6
> [ 128.859016] RIP: 0010:[<ffffffff81055a52>] [<ffffffff81055a52>] task_oncpu_function_call+0x22/0x40
> [ 128.859016] RSP: 0018:ffff880205967e18 EFLAGS: 00000246
> [ 128.859016] RAX: 0000000000000002 RBX: ffff880205964cc0 RCX: 000000000000dd00
> [ 128.859016] RDX: ffff880211138c00 RSI: ffffffff8108d3f0 RDI: ffff88022e42a100
> [ 128.859016] RBP: ffffffff8102d76e R08: ffff880028066000 R09: 0000000000000000
> [ 128.859016] R10: 0000000000000000 R11: 0000000000000058 R12: ffffffff8108d3f0
> [ 128.859016] R13: ffff880211138c00 R14: 0000000000000001 R15: 000000000000e260
> [ 128.859016] FS: 00002b9ba0924e00(0000) GS:ffff880028066000(0000) knlGS:0000000000000000
> [ 128.859016] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b
> [ 128.859016] CR2: 00002b9ba091e4a8 CR3: 0000000001001000 CR4: 00000000000006e0
> [ 128.859016] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> [ 128.859016] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
> [ 128.859016] Call Trace:
> [ 128.859016] [<ffffffff8108ee3b>] ? perf_counter_remove_from_context+0x3b/0x90
> [ 128.859016] [<ffffffff810904b4>] ? perf_counter_exit_task+0x114/0x340
> [ 128.859016] [<ffffffff810c3f66>] ? filp_close+0x56/0x90
> [ 128.859016] [<ffffffff8105d3ac>] ? do_exit+0x14c/0x6f0
> [ 128.859016] [<ffffffff8105d991>] ? do_group_exit+0x41/0xb0
> [ 128.859016] [<ffffffff8105da12>] ? sys_exit_group+0x12/0x20
> [ 128.859016] [<ffffffff8102cceb>] ? system_call_fastpath+0x16/0x1b
>
> So, got nothing to compare with.
Could still compare -j5 to -j4 on -tip, to see why -j4 is 3% short
of -j5's throughput.
(Plus maybe the NEW_FAIR_SLEEPERS change in -tip fixes the 3% drop.)
Ingo
next prev parent reply other threads:[~2009-09-11 6:10 UTC|newest]
Thread overview: 216+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-09-06 20:59 BFS vs. mainline scheduler benchmarks and measurements Ingo Molnar
2009-09-07 2:05 ` Frans Pop
2009-09-07 12:16 ` [quad core results] " Ingo Molnar
2009-09-07 12:36 ` Stefan Richter
2009-09-07 13:41 ` Markus Tornqvist
2009-09-07 13:59 ` Ingo Molnar
2009-09-09 5:54 ` Markus Tornqvist
2009-09-07 14:45 ` Arjan van de Ven
2009-09-07 15:20 ` Frans Pop
2009-09-07 15:36 ` Arjan van de Ven
2009-09-07 15:47 ` Frans Pop
2009-09-07 15:24 ` Xavier Bestel
2009-09-07 15:37 ` Arjan van de Ven
2009-09-07 16:00 ` Diego Calleja
2009-09-07 15:34 ` Nikos Chantziaras
2009-09-07 3:38 ` Nikos Chantziaras
2009-09-07 11:01 ` Frederic Weisbecker
2009-09-08 18:15 ` Nikos Chantziaras
2009-09-10 20:25 ` Frederic Weisbecker
2009-09-07 14:40 ` Arjan van de Ven
2009-09-08 7:19 ` Nikos Chantziaras
2009-09-08 8:31 ` Arjan van de Ven
2009-09-08 20:22 ` Frans Pop
2009-09-08 21:10 ` Michal Schmidt
2009-09-08 21:11 ` Frans Pop
2009-09-08 21:40 ` GeunSik Lim
2009-09-08 22:36 ` Frans Pop
2009-09-09 9:53 ` Benjamin Herrenschmidt
2009-09-09 11:14 ` David Newall
2009-09-09 11:32 ` Benjamin Herrenschmidt
2009-09-09 11:55 ` Frans Pop
2009-09-11 1:36 ` Benjamin Herrenschmidt
2009-09-16 18:27 ` Frans Pop
2009-09-17 1:29 ` Benjamin Herrenschmidt
2009-10-01 9:36 ` Frans Pop
2009-09-08 8:38 ` Arjan van de Ven
2009-09-08 10:13 ` Nikos Chantziaras
2009-09-08 11:32 ` Juergen Beisert
2009-09-08 22:00 ` Nikos Chantziaras
2009-09-08 23:20 ` Jiri Kosina
2009-09-08 23:38 ` Nikos Chantziaras
2009-09-08 12:03 ` Theodore Tso
2009-09-08 21:28 ` Nikos Chantziaras
2009-09-08 14:20 ` Arjan van de Ven
2009-09-08 22:53 ` Nikos Chantziaras
2009-09-07 23:54 ` Thomas Fjellstrom
2009-09-08 11:30 ` Nikos Chantziaras
2009-09-07 3:50 ` Con Kolivas
2009-09-07 18:20 ` Jerome Glisse
2009-09-07 9:49 ` Jens Axboe
2009-09-07 10:12 ` Nikos Chantziaras
2009-09-07 10:41 ` Jens Axboe
2009-09-07 11:57 ` Jens Axboe
2009-09-07 14:14 ` Ingo Molnar
2009-09-07 17:38 ` Jens Axboe
2009-09-07 20:44 ` Jens Axboe
2009-09-08 9:13 ` Jens Axboe
2009-09-08 15:23 ` Peter Zijlstra
2009-09-08 20:34 ` Jens Axboe
2009-09-09 6:13 ` Ingo Molnar
2009-09-09 8:34 ` Nikos Chantziaras
2009-09-09 8:52 ` Mike Galbraith
2009-09-09 9:02 ` Peter Zijlstra
2009-09-09 9:18 ` Mike Galbraith
2009-09-09 9:05 ` Nikos Chantziaras
2009-09-09 9:17 ` Peter Zijlstra
2009-09-09 9:40 ` Nikos Chantziaras
2009-09-09 10:17 ` Nikos Chantziaras
2009-09-10 19:45 ` Martin Steigerwald
2009-09-10 20:06 ` Ingo Molnar
2009-09-10 20:39 ` Martin Steigerwald
2009-09-10 20:42 ` Ingo Molnar
2009-09-10 21:19 ` Martin Steigerwald
2009-09-11 9:26 ` Mat
2009-09-12 11:26 ` Martin Steigerwald
2009-09-09 9:10 ` Jens Axboe
2009-09-09 11:54 ` Jens Axboe
2009-09-09 12:20 ` Jens Axboe
2009-09-09 18:04 ` Ingo Molnar
2009-09-09 20:12 ` Nikos Chantziaras
2009-09-09 20:50 ` Jens Axboe
2009-09-10 1:02 ` Con Kolivas
2009-09-10 11:03 ` Jens Axboe
2009-09-10 3:15 ` Mike Galbraith
2009-09-10 6:08 ` Ingo Molnar
2009-09-10 6:40 ` Ingo Molnar
2009-09-10 9:54 ` Jens Axboe
2009-09-10 10:03 ` Ingo Molnar
2009-09-10 10:11 ` Jens Axboe
2009-09-10 10:28 ` Jens Axboe
2009-09-10 10:57 ` Mike Galbraith
2009-09-10 11:09 ` Jens Axboe
2009-09-10 11:21 ` Mike Galbraith
2009-09-10 11:24 ` Jens Axboe
2009-09-10 11:28 ` Mike Galbraith
2009-09-10 11:35 ` Jens Axboe
2009-09-10 11:42 ` Mike Galbraith
2009-09-10 16:02 ` Bret Towe
2009-09-10 16:05 ` Peter Zijlstra
2009-09-10 16:12 ` Bret Towe
2009-09-10 16:26 ` Ingo Molnar
2009-09-10 16:33 ` Bret Towe
2009-09-10 17:03 ` Ingo Molnar
2009-09-10 17:53 ` Nikos Chantziaras
2009-09-10 18:46 ` Ingo Molnar
2009-09-10 18:51 ` [tip:sched/core] sched: Disable NEW_FAIR_SLEEPERS for now tip-bot for Ingo Molnar
2009-09-10 18:57 ` [tip:sched/core] sched: Fix sched::sched_stat_wait tracepoint field tip-bot for Ingo Molnar
2009-09-10 9:48 ` BFS vs. mainline scheduler benchmarks and measurements Jens Axboe
2009-09-10 9:59 ` Ingo Molnar
2009-09-10 10:01 ` Jens Axboe
2009-09-10 6:55 ` Peter Zijlstra
2009-09-10 6:58 ` Jens Axboe
2009-09-10 7:04 ` Ingo Molnar
2009-09-10 9:44 ` Jens Axboe
2009-09-10 9:45 ` Jens Axboe
2009-09-10 13:53 ` Steven Rostedt
2009-09-10 7:33 ` Jens Axboe
2009-09-10 7:49 ` Ingo Molnar
2009-09-10 7:53 ` Jens Axboe
2009-09-10 10:02 ` Ingo Molnar
2009-09-10 10:09 ` Jens Axboe
2009-09-10 18:00 ` [crash, bisected] Re: clocksource: Resolve cpu hotplug dead lock with TSC unstable Ingo Molnar
2009-09-11 7:37 ` Ingo Molnar
2009-09-11 7:48 ` Martin Schwidefsky
2009-09-11 13:33 ` Martin Schwidefsky
2009-09-11 18:22 ` [tip:timers/core] clocksource: Resolve cpu hotplug dead lock with TSC unstable, fix crash tip-bot for Martin Schwidefsky
2009-09-14 15:19 ` [crash, bisected] Re: clocksource: Resolve cpu hotplug dead lock with TSC unstable Ingo Molnar
2009-09-14 15:37 ` Martin Schwidefsky
2009-09-14 17:59 ` Martin Schwidefsky
2009-09-10 6:59 ` BFS vs. mainline scheduler benchmarks and measurements Ingo Molnar
2009-09-09 12:48 ` Mike Galbraith
2009-09-09 15:37 ` [tip:sched/core] sched: Turn off child_runs_first tip-bot for Mike Galbraith
2009-09-09 17:57 ` Theodore Tso
2009-09-09 18:08 ` Ingo Molnar
2009-09-09 18:59 ` Chris Friesen
2009-09-09 19:48 ` Pavel Machek
2009-09-09 15:37 ` [tip:sched/core] sched: Re-tune the scheduler latency defaults to decrease worst-case latencies tip-bot for Mike Galbraith
2009-09-12 11:45 ` Martin Steigerwald
2009-09-09 15:37 ` [tip:sched/core] sched: Keep kthreads at default priority tip-bot for Mike Galbraith
2009-09-09 16:55 ` Dmitry Torokhov
2009-09-09 17:06 ` Peter Zijlstra
2009-09-09 17:34 ` Mike Galbraith
2009-09-12 11:48 ` Martin Steigerwald
2009-09-12 12:19 ` Mike Galbraith
2009-09-09 11:52 ` BFS vs. mainline scheduler benchmarks and measurements Nikos Chantziaras
2009-09-07 18:02 ` Avi Kivity
2009-09-07 18:46 ` Jens Axboe
2009-09-07 20:36 ` Ingo Molnar
2009-09-07 20:46 ` Jens Axboe
2009-09-07 21:03 ` Peter Zijlstra
2009-09-07 21:05 ` Jens Axboe
2009-09-07 22:18 ` Ingo Molnar
2009-09-09 7:38 ` Pavel Machek
2009-09-10 12:19 ` latt location (Was Re: BFS vs. mainline scheduler benchmarks and measurements) Jens Axboe
2009-09-07 15:16 ` BFS vs. mainline scheduler benchmarks and measurements Michael Buesch
2009-09-07 18:26 ` Ingo Molnar
2009-09-07 18:47 ` Daniel Walker
2009-09-07 18:51 ` Michael Buesch
2009-09-07 20:57 ` Ingo Molnar
2009-09-07 23:24 ` Pekka Pietikainen
2009-09-08 8:04 ` Ingo Molnar
2009-09-08 8:13 ` Nikos Chantziaras
2009-09-08 10:12 ` Ingo Molnar
2009-09-08 10:40 ` Nikos Chantziaras
2009-09-08 11:35 ` Ingo Molnar
2009-09-08 19:06 ` Nikos Chantziaras
2009-09-08 12:00 ` el_es
2009-09-08 15:45 ` Michael Buesch
2009-09-08 7:48 ` Ingo Molnar
2009-09-08 9:50 ` Benjamin Herrenschmidt
2009-09-08 13:09 ` Ralf Baechle
2009-09-09 1:36 ` Felix Fietkau
2009-09-08 13:09 ` Felix Fietkau
2009-09-09 0:28 ` Benjamin Herrenschmidt
2009-09-09 0:37 ` David Miller
2009-09-08 14:45 ` Michael Buesch
2009-09-18 11:24 ` Ingo Molnar
2009-09-18 14:46 ` Felix Fietkau
2009-09-19 18:01 ` Ingo Molnar
2009-09-19 18:43 ` Felix Fietkau
2009-09-19 19:39 ` Ingo Molnar
2009-09-19 20:15 ` Felix Fietkau
2009-09-19 20:22 ` Ingo Molnar
2009-09-19 20:33 ` Felix Fietkau
2009-09-20 18:10 ` Ingo Molnar
2009-09-08 12:57 ` Epic regression in throughput since v2.6.23 Serge Belyshev
2009-09-08 17:47 ` Jesse Brandeburg
2009-09-08 18:20 ` Nikos Chantziaras
2009-09-08 19:00 ` Jeff Garzik
2009-09-08 19:20 ` Serge Belyshev
2009-09-08 19:26 ` Jeff Garzik
2009-09-08 18:37 ` Nikos Chantziaras
2009-09-08 22:15 ` Serge Belyshev
2009-09-09 15:52 ` Ingo Molnar
2009-09-09 20:49 ` Serge Belyshev
2009-09-09 21:23 ` Cory Fields
2009-09-10 6:53 ` Ingo Molnar
2009-09-10 23:23 ` Serge Belyshev
2009-09-11 6:10 ` Ingo Molnar [this message]
2009-09-11 8:55 ` Serge Belyshev
2009-09-13 15:27 ` Serge Belyshev
2009-09-13 15:47 ` Ingo Molnar
2009-09-13 19:17 ` Mike Galbraith
2009-09-14 6:15 ` Mike Galbraith
2009-09-16 19:45 ` Ingo Molnar
2009-09-16 23:18 ` Serge Belyshev
2009-09-17 4:55 ` [patchlet] " Mike Galbraith
2009-09-17 5:06 ` Mike Galbraith
2009-09-17 7:21 ` Ingo Molnar
2009-09-10 7:43 ` [updated] BFS vs. mainline scheduler benchmarks and measurements Ingo Molnar
2009-09-14 9:46 ` Phoronix CFS vs BFS bencharks Nikos Chantziaras
2009-09-14 11:35 ` Mike Galbraith
[not found] ` <f42384a10909140727k463ff460q3859892dcb79bcc5@mail.gmail.com>
2009-09-14 15:32 ` Mike Galbraith
2009-09-14 19:14 ` Marcin Letyns
2009-09-14 20:49 ` Willy Tarreau
2009-09-15 8:37 ` Mike Galbraith
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