From: Peter Zijlstra <peterz@infradead.org>
To: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Hugh Dickins <hughd@google.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
David Miller <davem@davemloft.net>,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
Russell King <rmk@arm.linux.org.uk>,
Paul Mundt <lethal@linux-sh.org>, Jeff Dike <jdike@addtoit.com>,
Richard Weinberger <richard@nod.at>,
Tony Luck <tony.luck@intel.com>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Mel Gorman <mel@csn.ul.ie>, Nick Piggin <npiggin@kernel.dk>,
Namhyung Kim <namhyung@gmail.com>,
ak@linux.intel.com, shaohua.li@intel.com, alex.shi@intel.com,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
"Rafael J. Wysocki" <rjw@sisk.pl>,
paulmck <paulmck@linux.vnet.ibm.com>
Subject: Re: REGRESSION: Performance regressions from switching anon_vma->lock to mutex
Date: Wed, 15 Jun 2011 12:58:15 +0200 [thread overview]
Message-ID: <1308135495.15315.38.camel@twins> (raw)
In-Reply-To: <1308134200.15315.32.camel@twins>
On Wed, 2011-06-15 at 12:36 +0200, Peter Zijlstra wrote:
> On Tue, 2011-06-14 at 17:29 -0700, Tim Chen wrote:
> > MOSBENCH test suite.
>
> Argh, I'm trying to get this thing to run, but its all snake poo..
>
> /me takes up a heavy club and goes snake hunting, should make a pretty
> hat or something.
Sweet, I've got meself a snake-skin hat!
The first thing that stood out when running it was:
31694 root 20 0 26660 1460 1212 S 17.5 0.0 0:01.97 exim
7 root -2 19 0 0 0 S 12.7 0.0 0:06.14 rcuc0
24 root -2 19 0 0 0 S 11.7 0.0 0:04.15 rcuc3
34 root -2 19 0 0 0 S 11.7 0.0 0:04.10 rcuc5
39 root -2 19 0 0 0 S 11.7 0.0 0:06.38 rcuc6
44 root -2 19 0 0 0 S 11.7 0.0 0:04.53 rcuc7
49 root -2 19 0 0 0 S 11.7 0.0 0:04.11 rcuc8
79 root -2 19 0 0 0 S 11.7 0.0 0:03.91 rcuc14
89 root -2 19 0 0 0 S 11.7 0.0 0:03.90 rcuc16
110 root -2 19 0 0 0 S 11.7 0.0 0:03.90 rcuc20
120 root -2 19 0 0 0 S 11.7 0.0 0:03.82 rcuc22
13 root -2 19 0 0 0 S 10.7 0.0 0:04.37 rcuc1
19 root -2 19 0 0 0 S 10.7 0.0 0:04.19 rcuc2
29 root -2 19 0 0 0 S 10.7 0.0 0:04.12 rcuc4
54 root -2 19 0 0 0 S 10.7 0.0 0:04.11 rcuc9
59 root -2 19 0 0 0 S 10.7 0.0 0:04.40 rcuc10
64 root -2 19 0 0 0 R 10.7 0.0 0:04.17 rcuc11
69 root -2 19 0 0 0 R 10.7 0.0 0:04.23 rcuc12
84 root -2 19 0 0 0 S 10.7 0.0 0:03.90 rcuc15
95 root -2 19 0 0 0 S 10.7 0.0 0:03.99 rcuc17
100 root -2 19 0 0 0 S 10.7 0.0 0:03.88 rcuc18
105 root -2 19 0 0 0 S 10.7 0.0 0:04.14 rcuc19
125 root -2 19 0 0 0 S 10.7 0.0 0:03.79 rcuc23
74 root -2 19 0 0 0 S 9.7 0.0 0:04.33 rcuc13
115 root -2 19 0 0 0 R 9.7 0.0 0:03.82 rcuc21
Which is an impressive amount of RCU usage..
WARNING: multiple messages have this Message-ID (diff)
From: Peter Zijlstra <peterz@infradead.org>
To: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Hugh Dickins <hughd@google.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Benjamin Herrenschmidt <benh@kernel.crashing.org>,
David Miller <davem@davemloft.net>,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
Russell King <rmk@arm.linux.org.uk>,
Paul Mundt <lethal@linux-sh.org>, Jeff Dike <jdike@addtoit.com>,
Richard Weinberger <richard@nod.at>,
Tony Luck <tony.luck@intel.com>,
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>,
Mel Gorman <mel@csn.ul.ie>, Nick Piggin <npiggin@kernel.dk>,
Namhyung Kim <namhyung@gmail.com>,
ak@linux.intel.com, shaohua.li@intel.com, alex.shi@intel.com,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
"Rafael J. Wysocki" <rjw@sisk.pl>,
paulmck <paulmck@linux.vnet.ibm.com>
Subject: Re: REGRESSION: Performance regressions from switching anon_vma->lock to mutex
Date: Wed, 15 Jun 2011 12:58:15 +0200 [thread overview]
Message-ID: <1308135495.15315.38.camel@twins> (raw)
In-Reply-To: <1308134200.15315.32.camel@twins>
On Wed, 2011-06-15 at 12:36 +0200, Peter Zijlstra wrote:
> On Tue, 2011-06-14 at 17:29 -0700, Tim Chen wrote:
> > MOSBENCH test suite.
>
> Argh, I'm trying to get this thing to run, but its all snake poo..
>
> /me takes up a heavy club and goes snake hunting, should make a pretty
> hat or something.
Sweet, I've got meself a snake-skin hat!
The first thing that stood out when running it was:
31694 root 20 0 26660 1460 1212 S 17.5 0.0 0:01.97 exim
7 root -2 19 0 0 0 S 12.7 0.0 0:06.14 rcuc0
24 root -2 19 0 0 0 S 11.7 0.0 0:04.15 rcuc3
34 root -2 19 0 0 0 S 11.7 0.0 0:04.10 rcuc5
39 root -2 19 0 0 0 S 11.7 0.0 0:06.38 rcuc6
44 root -2 19 0 0 0 S 11.7 0.0 0:04.53 rcuc7
49 root -2 19 0 0 0 S 11.7 0.0 0:04.11 rcuc8
79 root -2 19 0 0 0 S 11.7 0.0 0:03.91 rcuc14
89 root -2 19 0 0 0 S 11.7 0.0 0:03.90 rcuc16
110 root -2 19 0 0 0 S 11.7 0.0 0:03.90 rcuc20
120 root -2 19 0 0 0 S 11.7 0.0 0:03.82 rcuc22
13 root -2 19 0 0 0 S 10.7 0.0 0:04.37 rcuc1
19 root -2 19 0 0 0 S 10.7 0.0 0:04.19 rcuc2
29 root -2 19 0 0 0 S 10.7 0.0 0:04.12 rcuc4
54 root -2 19 0 0 0 S 10.7 0.0 0:04.11 rcuc9
59 root -2 19 0 0 0 S 10.7 0.0 0:04.40 rcuc10
64 root -2 19 0 0 0 R 10.7 0.0 0:04.17 rcuc11
69 root -2 19 0 0 0 R 10.7 0.0 0:04.23 rcuc12
84 root -2 19 0 0 0 S 10.7 0.0 0:03.90 rcuc15
95 root -2 19 0 0 0 S 10.7 0.0 0:03.99 rcuc17
100 root -2 19 0 0 0 S 10.7 0.0 0:03.88 rcuc18
105 root -2 19 0 0 0 S 10.7 0.0 0:04.14 rcuc19
125 root -2 19 0 0 0 S 10.7 0.0 0:03.79 rcuc23
74 root -2 19 0 0 0 S 9.7 0.0 0:04.33 rcuc13
115 root -2 19 0 0 0 R 9.7 0.0 0:03.82 rcuc21
Which is an impressive amount of RCU usage..
--
To unsubscribe, send a message with 'unsubscribe linux-mm' in
the body to majordomo@kvack.org. For more info on Linux MM,
see: http://www.linux-mm.org/ .
Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/
Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
next prev parent reply other threads:[~2011-06-15 10:59 UTC|newest]
Thread overview: 166+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-15 0:29 REGRESSION: Performance regressions from switching anon_vma->lock to mutex Tim Chen
2011-06-15 0:29 ` Tim Chen
2011-06-15 0:36 ` Andi Kleen
2011-06-15 0:36 ` Andi Kleen
2011-06-17 19:07 ` Ingo Molnar
2011-06-17 19:07 ` Ingo Molnar
2011-06-15 1:21 ` Linus Torvalds
2011-06-15 1:21 ` Linus Torvalds
2011-06-15 3:42 ` Linus Torvalds
2011-06-15 1:26 ` Shaohua Li
2011-06-15 1:26 ` Shaohua Li
2011-06-15 11:52 ` Peter Zijlstra
2011-06-15 11:52 ` Peter Zijlstra
2011-06-15 12:49 ` Peter Zijlstra
2011-06-15 12:49 ` Peter Zijlstra
2011-06-15 16:18 ` Andi Kleen
2011-06-15 16:18 ` Andi Kleen
2011-06-15 16:45 ` Peter Zijlstra
2011-06-15 16:45 ` Peter Zijlstra
2011-06-15 16:47 ` Andi Kleen
2011-06-15 16:47 ` Andi Kleen
2011-06-15 18:43 ` Tim Chen
2011-06-15 18:43 ` Tim Chen
2011-06-15 20:32 ` Peter Zijlstra
2011-06-15 20:32 ` Peter Zijlstra
2011-06-15 20:57 ` Andi Kleen
2011-06-15 20:57 ` Andi Kleen
2011-06-15 21:12 ` Tim Chen
2011-06-15 21:12 ` Tim Chen
2011-06-15 21:37 ` Peter Zijlstra
2011-06-15 21:37 ` Peter Zijlstra
2011-06-15 21:51 ` Linus Torvalds
2011-06-15 21:51 ` Linus Torvalds
2011-06-15 22:19 ` Andi Kleen
2011-06-15 22:19 ` Andi Kleen
2011-06-16 0:16 ` Linus Torvalds
2011-06-16 0:16 ` Linus Torvalds
2011-06-16 20:14 ` Andi Kleen
2011-06-16 20:14 ` Andi Kleen
2011-06-16 20:37 ` Linus Torvalds
2011-06-16 20:37 ` Linus Torvalds
2011-06-17 0:24 ` Andi Kleen
2011-06-17 9:13 ` Ingo Molnar
2011-06-17 9:13 ` Ingo Molnar
2011-06-15 22:15 ` Andi Kleen
2011-06-15 22:15 ` Andi Kleen
2011-06-16 1:08 ` Tim Chen
2011-06-16 1:08 ` Tim Chen
2011-06-16 1:50 ` Linus Torvalds
2011-06-16 1:50 ` Linus Torvalds
2011-06-16 20:26 ` Tim Chen
2011-06-16 20:26 ` Tim Chen
2011-06-16 20:47 ` Linus Torvalds
2011-06-16 20:47 ` Linus Torvalds
2011-06-16 21:05 ` Linus Torvalds
2011-06-16 21:05 ` Linus Torvalds
2011-06-16 21:06 ` Linus Torvalds
2011-06-16 21:26 ` Linus Torvalds
2011-06-16 21:26 ` Linus Torvalds
2011-06-17 3:58 ` Linus Torvalds
2011-06-17 11:28 ` Peter Zijlstra
2011-06-17 11:28 ` Peter Zijlstra
2011-06-17 11:54 ` Peter Zijlstra
2011-06-17 11:54 ` Peter Zijlstra
2011-06-17 16:36 ` Linus Torvalds
2011-06-17 16:36 ` Linus Torvalds
2011-06-17 17:41 ` Hugh Dickins
2011-06-17 17:41 ` Hugh Dickins
2011-06-17 17:55 ` Peter Zijlstra
2011-06-17 17:55 ` Peter Zijlstra
2011-06-17 18:01 ` Linus Torvalds
2011-06-17 18:01 ` Linus Torvalds
2011-06-17 18:18 ` Peter Zijlstra
2011-06-17 18:18 ` Peter Zijlstra
2011-06-17 18:32 ` Peter Zijlstra
2011-06-17 18:32 ` Peter Zijlstra
2011-06-17 18:39 ` Linus Torvalds
2011-06-17 18:41 ` Linus Torvalds
2011-06-17 18:41 ` Linus Torvalds
2011-06-17 20:19 ` Tim Chen
2011-06-17 20:19 ` Tim Chen
2011-06-17 22:20 ` Hugh Dickins
2011-06-17 22:20 ` Hugh Dickins
2011-06-18 4:47 ` Linus Torvalds
2011-06-18 4:47 ` Linus Torvalds
2011-06-17 19:53 ` [PATCH] mm, memory-failure: Fix spinlock vs mutex order Peter Zijlstra
2011-06-17 19:53 ` Peter Zijlstra
2011-06-17 20:04 ` Andi Kleen
2011-06-17 20:04 ` Andi Kleen
2011-06-17 16:46 ` REGRESSION: Performance regressions from switching anon_vma->lock to mutex Linus Torvalds
2011-06-17 16:46 ` Linus Torvalds
2011-06-17 17:28 ` Linus Torvalds
2011-06-17 19:40 ` Andi Kleen
2011-06-17 19:40 ` Andi Kleen
2011-06-18 8:08 ` Ingo Molnar
2011-06-18 8:08 ` Ingo Molnar
2011-06-17 18:22 ` Tim Chen
2011-06-17 18:22 ` Tim Chen
2011-06-17 19:05 ` Ray Lee
2011-06-17 19:05 ` Ray Lee
2011-06-16 22:00 ` Andi Kleen
2011-06-16 22:00 ` Andi Kleen
2011-06-15 10:36 ` Peter Zijlstra
2011-06-15 10:36 ` Peter Zijlstra
2011-06-15 10:58 ` Peter Zijlstra [this message]
2011-06-15 10:58 ` Peter Zijlstra
2011-06-15 11:41 ` Peter Zijlstra
2011-06-15 11:41 ` Peter Zijlstra
2011-06-15 19:11 ` Linus Torvalds
2011-06-15 19:11 ` Linus Torvalds
2011-06-15 19:24 ` Andrew Morton
2011-06-15 19:24 ` Andrew Morton
2011-06-15 20:16 ` Ingo Molnar
2011-06-15 20:16 ` Ingo Molnar
2011-06-15 20:55 ` Linus Torvalds
2011-06-15 20:55 ` Linus Torvalds
2011-06-15 20:12 ` [GIT PULL] " Ingo Molnar
2011-06-15 20:12 ` Ingo Molnar
2011-06-15 20:29 ` Paul E. McKenney
2011-06-15 20:29 ` Paul E. McKenney
2011-06-15 20:47 ` Linus Torvalds
2011-06-15 20:47 ` Linus Torvalds
2011-06-15 20:54 ` Paul E. McKenney
2011-06-15 20:54 ` Paul E. McKenney
2011-06-15 21:05 ` Linus Torvalds
2011-06-15 21:05 ` Linus Torvalds
2011-06-15 21:15 ` Paul E. McKenney
2011-06-15 21:15 ` Paul E. McKenney
2011-06-15 21:27 ` Linus Torvalds
2011-06-15 21:27 ` Linus Torvalds
2011-06-16 7:03 ` Ingo Molnar
2011-06-16 7:03 ` Ingo Molnar
2011-06-16 17:16 ` Paul E. McKenney
2011-06-16 17:16 ` Paul E. McKenney
2011-06-16 20:25 ` Ingo Molnar
2011-06-16 20:25 ` Ingo Molnar
2011-06-16 21:01 ` Frederic Weisbecker
2011-06-16 21:01 ` Frederic Weisbecker
2011-06-16 23:02 ` Ingo Molnar
2011-06-16 23:02 ` Ingo Molnar
2011-06-17 15:19 ` Frederic Weisbecker
2011-06-17 15:19 ` Frederic Weisbecker
2011-06-16 21:02 ` Andi Kleen
2011-06-16 21:02 ` Andi Kleen
2011-06-16 22:21 ` Benjamin Herrenschmidt
2011-06-16 22:21 ` Benjamin Herrenschmidt
2011-06-16 22:38 ` Ingo Molnar
2011-06-16 22:38 ` Ingo Molnar
2011-06-16 22:47 ` Andi Kleen
2011-06-16 22:47 ` Andi Kleen
2011-06-16 22:58 ` Ingo Molnar
2011-06-16 22:58 ` Ingo Molnar
2011-06-17 0:45 ` Paul E. McKenney
2011-06-17 0:45 ` Paul E. McKenney
2011-06-17 9:43 ` Ingo Molnar
2011-06-17 9:43 ` Ingo Molnar
2011-06-17 16:48 ` Paul E. McKenney
2011-06-17 16:48 ` Paul E. McKenney
2011-06-16 23:37 ` Paul E. McKenney
2011-06-16 23:37 ` Paul E. McKenney
2011-06-15 20:13 ` Tim Chen
2011-06-15 20:13 ` Tim Chen
2011-06-15 20:17 ` Ingo Molnar
2011-06-15 20:17 ` Ingo Molnar
2011-06-15 20:21 ` Tim Chen
2011-06-15 20:21 ` Tim Chen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1308135495.15315.38.camel@twins \
--to=peterz@infradead.org \
--cc=ak@linux.intel.com \
--cc=akpm@linux-foundation.org \
--cc=alex.shi@intel.com \
--cc=benh@kernel.crashing.org \
--cc=davem@davemloft.net \
--cc=hughd@google.com \
--cc=jdike@addtoit.com \
--cc=kamezawa.hiroyu@jp.fujitsu.com \
--cc=kosaki.motohiro@jp.fujitsu.com \
--cc=lethal@linux-sh.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mm@kvack.org \
--cc=mel@csn.ul.ie \
--cc=namhyung@gmail.com \
--cc=npiggin@kernel.dk \
--cc=paulmck@linux.vnet.ibm.com \
--cc=richard@nod.at \
--cc=rjw@sisk.pl \
--cc=rmk@arm.linux.org.uk \
--cc=schwidefsky@de.ibm.com \
--cc=shaohua.li@intel.com \
--cc=tim.c.chen@linux.intel.com \
--cc=tony.luck@intel.com \
--cc=torvalds@linux-foundation.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.