From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Thu, 5 Jun 2008 16:27:59 -0700 From: Keika Kobayashi Subject: [PATCH 0/3 v2] per-task-delay-accounting: add memory reclaim delay Message-Id: <20080605162759.a6adf291.kobayashi.kk@ncos.nec.co.jp> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: linux-kernel@vger.kernel.org, linux-mm@kvack.org Cc: akpm@linux-foundation.org, nagar@watson.ibm.com, balbir@in.ibm.com, sekharan@us.ibm.com, kosaki.motohiro@jp.fujitsu.com, kamezawa.hiroyu@jp.fujitsu.com List-ID: Hi. This is v2 of accounting memory reclaim patch series. Thanks to Kosaki-san, Kamezawa-san, Andrew for comments and advice! These patches were fixed about the following. Against: next-20080605 1) Change Log o Add accounting memory reclaim delay from memcgroup. For accounting both global and cgroup memory reclaim, accounting point was moved from try_to_free_pages() to do_try_to_free_pages. o Drop the patch regarding /proc export for memory reclaim delay. Because it seems that two separate ways to report are not necessary, this patch series supports only NETLINK and doesn't add a field to /proc//stat. 2) Confirm the fix regarding memcgroup. o Previous patch can't catch memory reclaim delay from memcgroup. $ echo 10M > /cgroups/0/memory.limit_in_bytes $ ls -s test.dat 500496 test.dat $ time tar cvf test.tar test.dat real 0m21.957s user 0m0.032s sys 0m2.348s $ ./delayget -d -p CPU count real total virtual total delay total 2441 2288143000 2438256954 22371958 IO count delay total 2444 18745251314 SWAP count delay total 0 0 RECLAIM count delay total 0 0 o Current patch can catch memory reclaim delay from memcgroup. $ echo 10M > /cgroups/0/memory.limit_in_bytes $ ls -s test.dat 500496 test.dat $ time tar cvf test.tar test.dat real 0m22.563s user 0m0.028s sys 0m2.440s $ ./delayget -d -p CPU count real total virtual total delay total 2640 2456153500 2478353004 28366219 IO count delay total 2628 19894214188 SWAP count delay total 0 0 RECLAIM count delay total 6600 10682486085 -- 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