From: Rik van Riel <riel@redhat.com>
To: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
LKML <linux-kernel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
Andrew Morton <akpm@linux-foundation.org>,
Wu Fengguang <fengguang.wu@intel.com>
Subject: Re: [PATCH -mm] throttle direct reclaim when too many pages are isolated already
Date: Wed, 15 Jul 2009 23:47:59 -0400 [thread overview]
Message-ID: <4A5EA2EF.3050501@redhat.com> (raw)
In-Reply-To: <20090716124255.3d601efb.kamezawa.hiroyu@jp.fujitsu.com>
KAMEZAWA Hiroyuki wrote:
>> Am I overlooking something?
>>
> Reclaim from cgorup doesn't come from memory shortage but from
> "it hits limit". Then, it doen't necessary to reclaim pages from
> this zone. fallback to other zone is always ok.
> This will trigger unnecessary wait, I think.
Fair enough.
I'll also change the patch so tasks with a fatal signal
pending will go through congestion_wait at least once,
to give other tasks a chance to free up memory.
That should address everybody's concerns.
--
All rights reversed.
WARNING: multiple messages have this Message-ID (diff)
From: Rik van Riel <riel@redhat.com>
To: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
LKML <linux-kernel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
Andrew Morton <akpm@linux-foundation.org>,
Wu Fengguang <fengguang.wu@intel.com>
Subject: Re: [PATCH -mm] throttle direct reclaim when too many pages are isolated already
Date: Wed, 15 Jul 2009 23:47:59 -0400 [thread overview]
Message-ID: <4A5EA2EF.3050501@redhat.com> (raw)
In-Reply-To: <20090716124255.3d601efb.kamezawa.hiroyu@jp.fujitsu.com>
KAMEZAWA Hiroyuki wrote:
>> Am I overlooking something?
>>
> Reclaim from cgorup doesn't come from memory shortage but from
> "it hits limit". Then, it doen't necessary to reclaim pages from
> this zone. fallback to other zone is always ok.
> This will trigger unnecessary wait, I think.
Fair enough.
I'll also change the patch so tasks with a fatal signal
pending will go through congestion_wait at least once,
to give other tasks a chance to free up memory.
That should address everybody's concerns.
--
All rights reversed.
--
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next prev parent reply other threads:[~2009-07-16 3:48 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-16 2:38 [PATCH -mm] throttle direct reclaim when too many pages are isolated already Rik van Riel
2009-07-16 2:38 ` Rik van Riel
2009-07-16 2:48 ` Andrew Morton
2009-07-16 2:48 ` Andrew Morton
2009-07-16 3:10 ` Rik van Riel
2009-07-16 3:10 ` Rik van Riel
2009-07-16 3:21 ` Andrew Morton
2009-07-16 3:21 ` Andrew Morton
2009-07-16 3:28 ` Rik van Riel
2009-07-16 3:28 ` Rik van Riel
2009-07-16 3:38 ` Andrew Morton
2009-07-16 3:38 ` Andrew Morton
2009-07-16 3:42 ` Rik van Riel
2009-07-16 3:42 ` Rik van Riel
2009-07-16 3:51 ` Andrew Morton
2009-07-16 3:51 ` Andrew Morton
2009-07-16 3:53 ` [PATCH -mm] throttle direct reclaim when too many pages are isolated already (v3) Rik van Riel
2009-07-16 3:53 ` Rik van Riel
2009-07-16 4:02 ` Andrew Morton
2009-07-16 4:02 ` Andrew Morton
2009-07-16 4:09 ` Rik van Riel
2009-07-16 4:09 ` Rik van Riel
2009-07-16 4:26 ` Andrew Morton
2009-07-16 4:26 ` Andrew Morton
2009-07-29 15:04 ` Pavel Machek
2009-07-29 15:04 ` Pavel Machek
2009-07-29 16:19 ` Rik van Riel
2009-07-29 16:19 ` Rik van Riel
2009-07-16 3:36 ` [PATCH -mm] throttle direct reclaim when too many pages are isolated already (v2) Rik van Riel
2009-07-16 3:36 ` Rik van Riel
2009-07-16 3:19 ` [PATCH -mm] throttle direct reclaim when too many pages are isolated already KAMEZAWA Hiroyuki
2009-07-16 3:19 ` KAMEZAWA Hiroyuki
2009-07-16 3:32 ` Rik van Riel
2009-07-16 3:32 ` Rik van Riel
2009-07-16 3:42 ` KAMEZAWA Hiroyuki
2009-07-16 3:42 ` KAMEZAWA Hiroyuki
2009-07-16 3:47 ` Rik van Riel [this message]
2009-07-16 3:47 ` Rik van Riel
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