From: Dave Hansen <dave@sr71.net>
To: Johannes Weiner <hannes@cmpxchg.org>,
Linus Torvalds <torvalds@linux-foundation.org>
Cc: Michal Hocko <mhocko@suse.com>, Hugh Dickins <hughd@google.com>,
Tejun Heo <tj@kernel.org>,
Vladimir Davydov <vdavydov@parallels.com>,
Andrew Morton <akpm@linux-foundation.org>,
LKML <linux-kernel@vger.kernel.org>,
Linux-MM <linux-mm@kvack.org>
Subject: Re: regression caused by cgroups optimization in 3.17-rc2
Date: Tue, 02 Sep 2014 20:15:05 -0700 [thread overview]
Message-ID: <540687B9.7070305@sr71.net> (raw)
In-Reply-To: <20140903013317.GA26086@cmpxchg.org>
On 09/02/2014 06:33 PM, Johannes Weiner wrote:
> kfree isn't eating 56% of "all cpu time" here, and it wasn't clear to
> me whether Dave filtered symbols from only memcontrol.o, memory.o, and
> mmap.o in a similar way. I'm not arguing against the regression, I'm
> just trying to make sense of the numbers from the *patched* kernel.
I guess I could have included it in the description, but that was a
pretty vanilla run:
perf top --call-graph=fp --stdio > foo.txt
I didn't use any filtering. I didn't even know I _could_ filter. :)
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WARNING: multiple messages have this Message-ID (diff)
From: Dave Hansen <dave@sr71.net>
To: Johannes Weiner <hannes@cmpxchg.org>,
Linus Torvalds <torvalds@linux-foundation.org>
Cc: Michal Hocko <mhocko@suse.com>, Hugh Dickins <hughd@google.com>,
Tejun Heo <tj@kernel.org>,
Vladimir Davydov <vdavydov@parallels.com>,
Andrew Morton <akpm@linux-foundation.org>,
LKML <linux-kernel@vger.kernel.org>,
Linux-MM <linux-mm@kvack.org>
Subject: Re: regression caused by cgroups optimization in 3.17-rc2
Date: Tue, 02 Sep 2014 20:15:05 -0700 [thread overview]
Message-ID: <540687B9.7070305@sr71.net> (raw)
In-Reply-To: <20140903013317.GA26086@cmpxchg.org>
On 09/02/2014 06:33 PM, Johannes Weiner wrote:
> kfree isn't eating 56% of "all cpu time" here, and it wasn't clear to
> me whether Dave filtered symbols from only memcontrol.o, memory.o, and
> mmap.o in a similar way. I'm not arguing against the regression, I'm
> just trying to make sense of the numbers from the *patched* kernel.
I guess I could have included it in the description, but that was a
pretty vanilla run:
perf top --call-graph=fp --stdio > foo.txt
I didn't use any filtering. I didn't even know I _could_ filter. :)
next prev parent reply other threads:[~2014-09-03 3:15 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-02 19:05 regression caused by cgroups optimization in 3.17-rc2 Dave Hansen
2014-09-02 19:05 ` Dave Hansen
2014-09-02 20:18 ` Dave Hansen
2014-09-02 20:57 ` Dave Hansen
2014-09-02 20:57 ` Dave Hansen
2014-09-04 14:27 ` Michal Hocko
2014-09-04 14:27 ` Michal Hocko
2014-09-04 20:27 ` Dave Hansen
2014-09-04 20:27 ` Dave Hansen
2014-09-04 22:53 ` Dave Hansen
2014-09-04 22:53 ` Dave Hansen
2014-09-05 9:28 ` Michal Hocko
2014-09-05 9:28 ` Michal Hocko
2014-09-05 9:25 ` Michal Hocko
2014-09-05 9:25 ` Michal Hocko
2014-09-05 14:47 ` Johannes Weiner
2014-09-05 14:47 ` Johannes Weiner
2014-09-05 15:39 ` Michal Hocko
2014-09-05 15:39 ` Michal Hocko
2014-09-10 16:29 ` Michal Hocko
2014-09-10 16:29 ` Michal Hocko
2014-09-10 16:57 ` Dave Hansen
2014-09-10 16:57 ` Dave Hansen
2014-09-10 17:05 ` Michal Hocko
2014-09-10 17:05 ` Michal Hocko
2014-09-05 12:35 ` Johannes Weiner
2014-09-05 12:35 ` Johannes Weiner
2014-09-08 15:47 ` Dave Hansen
2014-09-08 15:47 ` Dave Hansen
2014-09-09 14:50 ` Johannes Weiner
2014-09-09 14:50 ` Johannes Weiner
2014-09-09 18:23 ` Dave Hansen
2014-09-09 18:23 ` Dave Hansen
2014-09-02 22:18 ` Johannes Weiner
2014-09-02 22:18 ` Johannes Weiner
2014-09-02 22:36 ` Dave Hansen
2014-09-03 0:10 ` Johannes Weiner
2014-09-03 0:10 ` Johannes Weiner
2014-09-03 0:20 ` Linus Torvalds
2014-09-03 0:20 ` Linus Torvalds
2014-09-03 1:33 ` Johannes Weiner
2014-09-03 1:33 ` Johannes Weiner
2014-09-03 3:15 ` Dave Hansen [this message]
2014-09-03 3:15 ` Dave Hansen
2014-09-03 0:30 ` Dave Hansen
2014-09-03 0:30 ` Dave Hansen
2014-09-04 15:08 ` Johannes Weiner
2014-09-04 15:08 ` Johannes Weiner
2014-09-04 20:50 ` Dave Hansen
2014-09-04 20:50 ` Dave Hansen
2014-09-05 8:04 ` Michal Hocko
2014-09-05 8:04 ` Michal Hocko
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