From: Bruno Wolff III <bruno@wolff.to>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Dietmar Eggemann <dietmar.eggemann@arm.com>,
Josh Boyer <jwboyer@redhat.com>,
"mingo@redhat.com" <mingo@redhat.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: Scheduler regression from caffcdd8d27ba78730d5540396ce72ad022aff2c
Date: Fri, 18 Jul 2014 08:01:26 -0500 [thread overview]
Message-ID: <20140718130126.GA2401@wolff.to> (raw)
In-Reply-To: <20140718101633.GP9918@twins.programming.kicks-ass.net>
On Fri, Jul 18, 2014 at 12:16:33 +0200,
Peter Zijlstra <peterz@infradead.org> wrote:
>So it looks like the actual domain tree is broken, and not what we
>assumed it was.
>
>Could I bother you to run with the below instead? It should also print
>out the sched domain masks so we don't need to guess about them.
The full dmesg output is at:
https://bugzilla.kernel.org/attachment.cgi?id=143381
>(make sure you have CONFIG_SCHED_DEBUG=y otherwise it will not build)
>
>> I also booted with early printk=keepsched_debug as requested by Dietmar.
>
>can you make that: sched_debug ?
I think I've fixed that.
I think the part you are most interested in contains the following:
[ 0.252280] smpboot: Total of 4 processors activated (21438.11 BogoMIPS)
[ 0.253058] __sdt_alloc: allocated f255b020 with cpus:
[ 0.253146] __sdt_alloc: allocated f255b0e0 with cpus:
[ 0.253227] __sdt_alloc: allocated f255b120 with cpus:
[ 0.253308] __sdt_alloc: allocated f255b160 with cpus:
[ 0.253390] __sdt_alloc: allocated f255b1a0 with cpus:
[ 0.253471] __sdt_alloc: allocated f255b1e0 with cpus:
[ 0.253551] __sdt_alloc: allocated f255b220 with cpus:
[ 0.253632] __sdt_alloc: allocated f255b260 with cpus:
[ 0.254009] __sdt_alloc: allocated f255b2a0 with cpus:
[ 0.254092] __sdt_alloc: allocated f255b2e0 with cpus:
[ 0.254181] __sdt_alloc: allocated f255b320 with cpus:
[ 0.254262] __sdt_alloc: allocated f255b360 with cpus:
[ 0.254350] build_sched_domain: cpu: 0 level: SMT cpu_map: 0-3 tl->mask: 0,2
[ 0.254433] build_sched_domain: cpu: 0 level: MC cpu_map: 0-3 tl->mask: 0
[ 0.254516] build_sched_domain: cpu: 0 level: DIE cpu_map: 0-3 tl->mask: 0-3
[ 0.254600] build_sched_domain: cpu: 1 level: SMT cpu_map: 0-3 tl->mask: 1,3
[ 0.254683] build_sched_domain: cpu: 1 level: MC cpu_map: 0-3 tl->mask: 1
[ 0.254766] build_sched_domain: cpu: 1 level: DIE cpu_map: 0-3 tl->mask: 0-3
[ 0.254850] build_sched_domain: cpu: 2 level: SMT cpu_map: 0-3 tl->mask: 0,2
[ 0.254932] build_sched_domain: cpu: 2 level: MC cpu_map: 0-3 tl->mask: 2
[ 0.255005] build_sched_domain: cpu: 2 level: DIE cpu_map: 0-3 tl->mask: 0-3
[ 0.255091] build_sched_domain: cpu: 3 level: SMT cpu_map: 0-3 tl->mask: 1,3
[ 0.255176] build_sched_domain: cpu: 3 level: MC cpu_map: 0-3 tl->mask: 3
[ 0.255260] build_sched_domain: cpu: 3 level: DIE cpu_map: 0-3 tl->mask: 0-3
[ 0.256006] build_sched_groups: got group f255b020 with cpus:
[ 0.256089] build_sched_groups: got group f255b120 with cpus:
[ 0.256171] build_sched_groups: got group f255b1a0 with cpus:
[ 0.256252] build_sched_groups: got group f255b2a0 with cpus:
[ 0.256333] build_sched_groups: got group f255b2e0 with cpus:
[ 0.256414] build_sched_groups: got group f255b320 with cpus:
[ 0.256495] build_sched_groups: got group f255b360 with cpus:
[ 0.256576] build_sched_groups: got group f255b0e0 with cpus:
[ 0.256657] build_sched_groups: got group f255b160 with cpus:
[ 0.256740] build_sched_groups: got group f255b1e0 with cpus:
[ 0.256821] build_sched_groups: FAIL
[ 0.257004] build_sched_groups: got group f255b1a0 with cpus: 0
[ 0.257087] build_sched_groups: FAIL
[ 0.257167] build_sched_groups: got group f255b1e0 with cpus: 1
next prev parent reply other threads:[~2014-07-18 13:05 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-16 14:55 Scheduler regression from caffcdd8d27ba78730d5540396ce72ad022aff2c Bruno Wolff III
2014-07-16 15:17 ` Josh Boyer
2014-07-16 19:17 ` Dietmar Eggemann
2014-07-16 19:54 ` Bruno Wolff III
2014-07-16 23:18 ` Dietmar Eggemann
2014-07-17 3:09 ` Bruno Wolff III
2014-07-17 8:57 ` Dietmar Eggemann
2014-07-17 9:04 ` Peter Zijlstra
2014-07-17 11:23 ` Dietmar Eggemann
2014-07-17 12:35 ` Peter Zijlstra
2014-07-18 5:34 ` Bruno Wolff III
2014-07-18 9:28 ` Dietmar Eggemann
2014-07-18 12:09 ` Bruno Wolff III
2014-07-18 10:16 ` Peter Zijlstra
2014-07-18 13:01 ` Bruno Wolff III [this message]
2014-07-18 14:16 ` Dietmar Eggemann
2014-07-18 14:16 ` Peter Zijlstra
2014-07-18 14:50 ` Peter Zijlstra
2014-07-18 16:16 ` Peter Zijlstra
2014-07-21 16:35 ` Bruno Wolff III
2014-07-21 16:52 ` Peter Zijlstra
2014-07-22 9:47 ` Peter Zijlstra
2014-07-22 10:38 ` Peter Zijlstra
2014-07-22 12:10 ` Bruno Wolff III
2014-07-22 13:03 ` Peter Zijlstra
2014-07-22 13:26 ` Peter Zijlstra
2014-07-22 13:35 ` Peter Zijlstra
2014-07-22 14:09 ` Bruno Wolff III
2014-07-22 14:18 ` Peter Zijlstra
2014-07-23 1:37 ` Bruno Wolff III
2014-07-23 6:51 ` Peter Zijlstra
2014-07-22 17:05 ` H. Peter Anvin
2014-07-23 15:11 ` Peter Zijlstra
2014-07-23 15:12 ` H. Peter Anvin
2014-07-24 1:45 ` Bruno Wolff III
2014-07-23 15:39 ` [tip:x86/urgent] x86, cpu: Fix cache topology for early P4-SMT tip-bot for Peter Zijlstra
2014-07-22 12:12 ` Scheduler regression from caffcdd8d27ba78730d5540396ce72ad022aff2c Dietmar Eggemann
2014-07-22 12:57 ` Bruno Wolff III
2014-07-28 8:28 ` [tip:sched/core] sched: Robustify topology setup tip-bot for Peter Zijlstra
2014-07-17 16:36 ` Scheduler regression from caffcdd8d27ba78730d5540396ce72ad022aff2c Bruno Wolff III
2014-07-17 18:43 ` Dietmar Eggemann
2014-07-17 18:54 ` Bruno Wolff III
2014-07-17 4:21 ` Bruno Wolff III
2014-07-17 4:28 ` Bruno Wolff III
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