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Date: Fri, 6 Jun 2008 12:01:46 +0900 From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com> To: Keika Kobayashi <kobayashi.kk@...s.nec.co.jp> Cc: linux-kernel@...r.kernel.org, linux-mm@...ck.org, akpm@...ux-foundation.org, nagar@...son.ibm.com, balbir@...ibm.com, sekharan@...ibm.com, kosaki.motohiro@...fujitsu.com Subject: Re: [PATCH 0/3 v2] per-task-delay-accounting: add memory reclaim delay On Thu, 5 Jun 2008 16:27:59 -0700 Keika Kobayashi <kobayashi.kk@...s.nec.co.jp> wrote: > 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/<pid>/stat. > > Thanks, I like this set. Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com> > 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 <pid> > 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 <pid> > 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 from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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