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From: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
To: Balbir Singh <balbir@linux.vnet.ibm.com>
Cc: "linux-mm@kvack.org" <linux-mm@kvack.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"hannes@cmpxchg.org" <hannes@cmpxchg.org>,
"nishimura@mxp.nes.nec.co.jp" <nishimura@mxp.nes.nec.co.jp>
Subject: Re: [BUGFIX][PATCH 0/4] Fixes for memcg with THP
Date: Mon, 31 Jan 2011 08:55:47 +0900 [thread overview]
Message-ID: <20110131085547.960f6702.kamezawa.hiroyu@jp.fujitsu.com> (raw)
In-Reply-To: <AANLkTiktzgxEVROyB=-0ZNq5xzao1Q-Cu3xpGqhx0gxm@mail.gmail.com>
On Sat, 29 Jan 2011 18:17:56 +0530
Balbir Singh <balbir@linux.vnet.ibm.com> wrote:
> On Fri, Jan 28, 2011 at 8:52 AM, KAMEZAWA Hiroyuki
> <kamezawa.hiroyu@jp.fujitsu.com> wrote:
> >
> > On recent -mm, when I run make -j 8 under 200M limit of memcg, as
> > ==
> > # mount -t cgroup none /cgroup/memory -o memory
> > # mkdir /cgroup/memory/A
> > # echo 200M > /cgroup/memory/A/memory.limit_in_bytes
> > # echo $$ > /cgroup/memory/A/tasks
> > # make -j 8 kernel
> > ==
> >
> > I see hangs with khugepaged. That's because memcg's memory reclaim
> > routine doesn't handle HUGE_PAGE request in proper way. And khugepaged
> > doesn't know about memcg.
> >
> > This patch set is for fixing above hang. Patch 1-3 seems obvious and
> > has the same concept as patches in RHEL.
>
> Do you have any backtraces? Are they in the specific patches?
>
Jan 18 10:28:29 rhel6-test kernel: [56245.286007] INFO: rcu_sched_state detected stall on CPU 0
(t=60000 jiffies)
Jan 18 10:28:29 rhel6-test kernel: [56245.286007] sending NMI to all CPUs:
Jan 18 10:28:29 rhel6-test kernel: [56245.286007] NMI backtrace for cpu 0
Jan 18 10:28:29 rhel6-test kernel: [56245.286007] CPU 0
Jan 18 10:28:29 rhel6-test kernel: [56245.286007] [<ffffffff8102a04e>] arch_trigger_all_cpu_bac
ktrace+0x5e/0xa0
Jan 18 10:28:29 rhel6-test kernel: [56245.286007] [<ffffffff810bca09>] __rcu_pending+0x169/0x3b
0
Jan 18 10:28:29 rhel6-test kernel: [56245.286007] [<ffffffff8108a250>] ? tick_sched_timer+0x0/0
xc0
Jan 18 10:28:29 rhel6-test kernel: [56245.286007] [<ffffffff810bccbc>] rcu_check_callbacks+0x6c
/0x120
Jan 18 10:28:29 rhel6-test kernel: [56245.286007] [<ffffffff810689a8>] update_process_times+0x4
8/0x90
Jan 18 10:28:29 rhel6-test kernel: [56245.286007] [<ffffffff8108a2b6>] tick_sched_timer+0x66/0x
c0
Jan 18 10:28:29 rhel6-test kernel: [56245.286007] [<ffffffff8107ede0>] __run_hrtimer+0x90/0x1e0
Jan 18 10:28:29 rhel6-test kernel: [56245.286007] [<ffffffff81032db9>] ? kvm_clock_get_cycles+0
x9/0x10
Jan 18 10:28:29 rhel6-test kernel: [56245.286007] [<ffffffff8107f1be>] hrtimer_interrupt+0xde/0
x240
Jan 18 10:28:29 rhel6-test kernel: [56245.286007] [<ffffffff8155268b>] smp_apic_timer_interrupt
+0x6b/0x9b
Jan 18 10:28:29 rhel6-test kernel: [56245.286007] [<ffffffff8100c9d3>] apic_timer_interrupt+0x13/0x20
Jan 18 10:28:29 rhel6-test kernel: [56245.286007] <EOI>
Jan 18 10:28:29 rhel6-test kernel: [56245.286007] [<ffffffff810a726a>] ? res_counter_charge+0xda/0x100
Jan 18 10:28:29 rhel6-test kernel: [56245.286007] [<ffffffff81145459>] __mem_cgroup_try_charge+0x199/0x5d0
Jan 18 10:28:29 rhel6-test kernel: [56245.286007] [<ffffffff811463b5>] mem_cgroup_newpage_charge+0x45/0x50
Jan 18 10:28:29 rhel6-test kernel: [56245.286007] [<ffffffff8113dbd4>] khugepaged+0x924/0x1430
Jan 18 10:28:29 rhel6-test kernel: [56245.286007] [<ffffffff8107af00>] ? autoremove_wake_function+0x0/0x40
Jan 18 10:28:29 rhel6-test kernel: [56245.286007] [<ffffffff8113d2b0>] ? khugepaged+0x0/0x1430
Jan 18 10:28:29 rhel6-test kernel: [56245.286007] [<ffffffff8107a8b6>] kthread+0x96/0xa0
Jan 18 10:28:29 rhel6-test kernel: [56245.286007] [<ffffffff8100ce24>] kernel_thread_helper+0x4/0x10
Jan 18 10:28:29 rhel6-test kernel: [56245.286007] [<ffffffff8107a820>] ? kthread+0x0/0xa0
Jan 18 10:28:29 rhel6-test kernel: [56245.286007] [<ffffffff8100ce20>] ? kernel_thread_helper+0x0/0x10
Thanks,
-Kame
prev parent reply other threads:[~2011-01-31 0:02 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-28 3:22 KAMEZAWA Hiroyuki
2011-01-28 3:24 ` [BUGFIX][PATCH 1/4] memcg: fix limit estimation at reclaim for hugepage KAMEZAWA Hiroyuki
2011-01-28 4:40 ` Daisuke Nishimura
2011-01-28 4:49 ` KAMEZAWA Hiroyuki
2011-01-28 4:58 ` KAMEZAWA Hiroyuki
2011-01-28 5:36 ` Daisuke Nishimura
2011-01-28 8:04 ` Minchan Kim
2011-01-28 8:17 ` Johannes Weiner
2011-01-28 8:25 ` Minchan Kim
2011-01-28 8:36 ` KAMEZAWA Hiroyuki
2011-01-30 2:26 ` Minchan Kim
2011-01-28 8:41 ` Johannes Weiner
2011-01-28 8:24 ` KAMEZAWA Hiroyuki
2011-01-28 8:37 ` Minchan Kim
2011-01-28 7:52 ` Johannes Weiner
2011-01-28 8:06 ` KAMEZAWA Hiroyuki
2011-01-28 3:26 ` [BUGFIX][PATCH 2/4] memcg: fix charge path for THP and allow early retirement KAMEZAWA Hiroyuki
2011-01-28 5:37 ` Daisuke Nishimura
2011-01-28 7:57 ` Johannes Weiner
2011-01-28 8:14 ` KAMEZAWA Hiroyuki
2011-01-28 9:02 ` Johannes Weiner
2011-01-28 9:16 ` KAMEZAWA Hiroyuki
2011-01-28 3:27 ` [BUGFIX][PATCH 3/4] mecg: fix oom flag at THP charge KAMEZAWA Hiroyuki
2011-01-28 5:39 ` Daisuke Nishimura
2011-01-28 5:50 ` KAMEZAWA Hiroyuki
2011-01-28 8:02 ` Johannes Weiner
2011-01-28 8:21 ` KAMEZAWA Hiroyuki
2011-01-31 7:41 ` Balbir Singh
2011-01-28 3:28 ` [BUGFIX][PATCH 4/4] memcg: fix khugepaged should skip busy memcg KAMEZAWA Hiroyuki
2011-01-28 8:20 ` Daisuke Nishimura
2011-01-28 8:30 ` KAMEZAWA Hiroyuki
2011-01-29 12:47 ` [BUGFIX][PATCH 0/4] Fixes for memcg with THP Balbir Singh
2011-01-30 23:55 ` KAMEZAWA Hiroyuki [this message]
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