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From: Christoph Lameter <cl@linux.com>
To: Vinayak Menon <vinmenon@codeaurora.org>
Cc: Michal Hocko <mhocko@suse.cz>,
	linux-mm@kvack.org, linux-kernel@vger.kernel.org,
	akpm@linux-foundation.org, hannes@cmpxchg.org,
	vdavydov@parallels.com, mgorman@suse.de, minchan@kernel.org
Subject: Re: [PATCH v2] mm: vmscan: fix the page state calculation in too_many_isolated
Date: Sat, 17 Jan 2015 13:48:34 -0600 (CST)	[thread overview]
Message-ID: <alpine.DEB.2.11.1501171347290.25464@gentwo.org> (raw)
In-Reply-To: <54BA7D3A.40100@codeaurora.org>

On Sat, 17 Jan 2015, Vinayak Menon wrote:

> which had not updated the vmstat_diff. This CPU was in idle for around 30
> secs. When I looked at the tvec base for this CPU, the timer associated with
> vmstat_update had its expiry time less than current jiffies. This timer had
> its deferrable flag set, and was tied to the next non-deferrable timer in the

We can remove the deferrrable flag now since the vmstat threads are only
activated as necessary with the recent changes. Looks like this could fix
your issue?


WARNING: multiple messages have this Message-ID (diff)
From: Christoph Lameter <cl@linux.com>
To: Vinayak Menon <vinmenon@codeaurora.org>
Cc: Michal Hocko <mhocko@suse.cz>,
	linux-mm@kvack.org, linux-kernel@vger.kernel.org,
	akpm@linux-foundation.org, hannes@cmpxchg.org,
	vdavydov@parallels.com, mgorman@suse.de, minchan@kernel.org
Subject: Re: [PATCH v2] mm: vmscan: fix the page state calculation in too_many_isolated
Date: Sat, 17 Jan 2015 13:48:34 -0600 (CST)	[thread overview]
Message-ID: <alpine.DEB.2.11.1501171347290.25464@gentwo.org> (raw)
In-Reply-To: <54BA7D3A.40100@codeaurora.org>

On Sat, 17 Jan 2015, Vinayak Menon wrote:

> which had not updated the vmstat_diff. This CPU was in idle for around 30
> secs. When I looked at the tvec base for this CPU, the timer associated with
> vmstat_update had its expiry time less than current jiffies. This timer had
> its deferrable flag set, and was tied to the next non-deferrable timer in the

We can remove the deferrrable flag now since the vmstat threads are only
activated as necessary with the recent changes. Looks like this could fix
your issue?

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  reply	other threads:[~2015-01-17 19:48 UTC|newest]

Thread overview: 60+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-01-14 11:36 [PATCH v2] mm: vmscan: fix the page state calculation in too_many_isolated Vinayak Menon
2015-01-14 11:36 ` Vinayak Menon
2015-01-14 16:50 ` Michal Hocko
2015-01-14 16:50   ` Michal Hocko
2015-01-15 17:24   ` Vinayak Menon
2015-01-15 17:24     ` Vinayak Menon
2015-01-16 15:49     ` Michal Hocko
2015-01-16 15:49       ` Michal Hocko
2015-01-16 17:57       ` Michal Hocko
2015-01-16 17:57         ` Michal Hocko
2015-01-16 19:17         ` Christoph Lameter
2015-01-16 19:17           ` Christoph Lameter
2015-01-17 15:18       ` Vinayak Menon
2015-01-17 15:18         ` Vinayak Menon
2015-01-17 19:48         ` Christoph Lameter [this message]
2015-01-17 19:48           ` Christoph Lameter
2015-01-19  4:27           ` Vinayak Menon
2015-01-19  4:27             ` Vinayak Menon
2015-01-21 14:39             ` Michal Hocko
2015-01-21 14:39               ` Michal Hocko
2015-01-22 15:16               ` Vlastimil Babka
2015-01-22 15:16                 ` Vlastimil Babka
2015-01-22 16:11               ` Christoph Lameter
2015-01-22 16:11                 ` Christoph Lameter
2015-01-26 17:46                 ` Michal Hocko
2015-01-26 17:46                   ` Michal Hocko
2015-01-26 18:35                   ` Christoph Lameter
2015-01-26 18:35                     ` Christoph Lameter
2015-01-27 10:52                     ` Michal Hocko
2015-01-27 10:52                       ` Michal Hocko
2015-01-27 16:59                       ` Christoph Lameter
2015-01-27 16:59                         ` Christoph Lameter
2015-01-30 15:28                         ` Michal Hocko
2015-01-30 15:28                           ` Michal Hocko
2015-01-26 17:28           ` Michal Hocko
2015-01-26 17:28             ` Michal Hocko
2015-01-26 18:35             ` Christoph Lameter
2015-01-26 18:35               ` Christoph Lameter
2015-01-26 22:11             ` Andrew Morton
2015-01-26 22:11               ` Andrew Morton
2015-01-27 10:41               ` Michal Hocko
2015-01-27 10:41                 ` Michal Hocko
2015-01-27 10:33             ` Vinayak Menon
2015-01-27 10:33               ` Vinayak Menon
2015-01-27 10:45               ` Michal Hocko
2015-01-27 10:45                 ` Michal Hocko
2015-01-29 17:32       ` Christoph Lameter
2015-01-29 17:32         ` Christoph Lameter
2015-01-30 15:27         ` Michal Hocko
2015-01-30 15:27           ` Michal Hocko
2015-01-16  1:17 ` Andrew Morton
2015-01-16  1:17   ` Andrew Morton
2015-01-16  5:10   ` Vinayak Menon
2015-01-16  5:10     ` Vinayak Menon
2015-01-17 16:29   ` Vinayak Menon
2015-01-17 16:29     ` Vinayak Menon
2015-02-11 22:14     ` Andrew Morton
2015-02-11 22:14       ` Andrew Morton
2015-02-12 16:19       ` Vlastimil Babka
2015-02-12 16:19         ` Vlastimil Babka

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