From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f51.google.com (mail-pa0-f51.google.com [209.85.220.51]) by kanga.kvack.org (Postfix) with ESMTP id A55286B0036 for ; Tue, 2 Sep 2014 23:15:07 -0400 (EDT) Received: by mail-pa0-f51.google.com with SMTP id rd3so16433103pab.10 for ; Tue, 02 Sep 2014 20:15:07 -0700 (PDT) Received: from blackbird.sr71.net (www.sr71.net. [198.145.64.142]) by mx.google.com with ESMTP id ci1si8596883pad.150.2014.09.02.20.15.06 for ; Tue, 02 Sep 2014 20:15:06 -0700 (PDT) Message-ID: <540687B9.7070305@sr71.net> Date: Tue, 02 Sep 2014 20:15:05 -0700 From: Dave Hansen MIME-Version: 1.0 Subject: Re: regression caused by cgroups optimization in 3.17-rc2 References: <54061505.8020500@sr71.net> <20140902221814.GA18069@cmpxchg.org> <5406466D.1020000@sr71.net> <20140903001009.GA25970@cmpxchg.org> <20140903013317.GA26086@cmpxchg.org> In-Reply-To: <20140903013317.GA26086@cmpxchg.org> Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Johannes Weiner , Linus Torvalds Cc: Michal Hocko , Hugh Dickins , Tejun Heo , Vladimir Davydov , Andrew Morton , LKML , Linux-MM 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. :) -- 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/ . Don't email: email@kvack.org