From: Rik van Riel <riel@redhat.com>
To: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
Andrew Morton <akpm@linux-foundation.org>,
Johannes Weiner <hannes@cmpxchg.org>, Mel Gorman <mel@csn.ul.ie>,
Wu Fengguang <fengguang.wu@intel.com>,
Minchan Kim <minchan.kim@gmail.com>
Subject: Re: [PATCH 1/7] vmscan: raise the bar to PAGEOUT_IO_SYNC stalls
Date: Thu, 05 Aug 2010 11:19:34 -0400 [thread overview]
Message-ID: <4C5AD686.9040503@redhat.com> (raw)
In-Reply-To: <20100805151125.31BA.A69D9226@jp.fujitsu.com>
On 08/05/2010 02:12 AM, KOSAKI Motohiro wrote:
> From: Wu Fengguang<fengguang.wu@intel.com>
>
> Fix "system goes unresponsive under memory pressure and lots of
> dirty/writeback pages" bug.
>
> http://lkml.org/lkml/2010/4/4/86
>
> In the above thread, Andreas Mohr described that
>
> Invoking any command locked up for minutes (note that I'm
> talking about attempted additional I/O to the _other_,
> _unaffected_ main system HDD - such as loading some shell
> binaries -, NOT the external SSD18M!!).
>
> This happens when the two conditions are both meet:
> - under memory pressure
> - writing heavily to a slow device
Acked-by: Rik van Riel <riel@redhat.com>
--
All rights reversed
WARNING: multiple messages have this Message-ID (diff)
From: Rik van Riel <riel@redhat.com>
To: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
linux-mm <linux-mm@kvack.org>,
Andrew Morton <akpm@linux-foundation.org>,
Johannes Weiner <hannes@cmpxchg.org>, Mel Gorman <mel@csn.ul.ie>,
Wu Fengguang <fengguang.wu@intel.com>,
Minchan Kim <minchan.kim@gmail.com>
Subject: Re: [PATCH 1/7] vmscan: raise the bar to PAGEOUT_IO_SYNC stalls
Date: Thu, 05 Aug 2010 11:19:34 -0400 [thread overview]
Message-ID: <4C5AD686.9040503@redhat.com> (raw)
In-Reply-To: <20100805151125.31BA.A69D9226@jp.fujitsu.com>
On 08/05/2010 02:12 AM, KOSAKI Motohiro wrote:
> From: Wu Fengguang<fengguang.wu@intel.com>
>
> Fix "system goes unresponsive under memory pressure and lots of
> dirty/writeback pages" bug.
>
> http://lkml.org/lkml/2010/4/4/86
>
> In the above thread, Andreas Mohr described that
>
> Invoking any command locked up for minutes (note that I'm
> talking about attempted additional I/O to the _other_,
> _unaffected_ main system HDD - such as loading some shell
> binaries -, NOT the external SSD18M!!).
>
> This happens when the two conditions are both meet:
> - under memory pressure
> - writing heavily to a slow device
Acked-by: Rik van Riel <riel@redhat.com>
--
All rights reversed
--
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next prev parent reply other threads:[~2010-08-05 15:20 UTC|newest]
Thread overview: 66+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-08-05 6:11 [RFC][PATCH 0/7] low latency synchrounous lumpy reclaim KOSAKI Motohiro
2010-08-05 6:11 ` KOSAKI Motohiro
2010-08-05 6:12 ` [PATCH 1/7] vmscan: raise the bar to PAGEOUT_IO_SYNC stalls KOSAKI Motohiro
2010-08-05 6:12 ` KOSAKI Motohiro
2010-08-05 15:02 ` Mel Gorman
2010-08-05 15:02 ` Mel Gorman
2010-08-08 6:42 ` KOSAKI Motohiro
2010-08-08 6:42 ` KOSAKI Motohiro
2010-08-05 15:19 ` Rik van Riel [this message]
2010-08-05 15:19 ` Rik van Riel
2010-08-05 6:13 ` [PATCH 2/7] vmscan: synchronous lumpy reclaim don't call congestion_wait() KOSAKI Motohiro
2010-08-05 6:13 ` KOSAKI Motohiro
2010-08-05 13:55 ` Minchan Kim
2010-08-05 13:55 ` Minchan Kim
2010-08-05 15:05 ` Rik van Riel
2010-08-05 15:05 ` Rik van Riel
2010-08-05 15:06 ` Mel Gorman
2010-08-05 15:06 ` Mel Gorman
2010-08-05 6:13 ` [PATCH 3/7] vmscan: synchrounous lumpy reclaim use lock_page() instead trylock_page() KOSAKI Motohiro
2010-08-05 6:13 ` KOSAKI Motohiro
2010-08-05 14:17 ` Minchan Kim
2010-08-05 14:17 ` Minchan Kim
2010-08-06 0:52 ` Minchan Kim
2010-08-06 0:52 ` Minchan Kim
2010-08-05 15:12 ` Mel Gorman
2010-08-05 15:12 ` Mel Gorman
2010-08-05 15:26 ` Rik van Riel
2010-08-05 15:26 ` Rik van Riel
2010-08-05 6:14 ` [PATCH 4/7] vmscan: narrowing synchrounous lumply reclaim condition KOSAKI Motohiro
2010-08-05 6:14 ` KOSAKI Motohiro
2010-08-05 14:59 ` Minchan Kim
2010-08-05 14:59 ` Minchan Kim
2010-10-27 16:41 ` Andrea Arcangeli
2010-10-27 16:41 ` Andrea Arcangeli
2010-10-27 17:16 ` Mel Gorman
2010-10-27 17:16 ` Mel Gorman
2010-10-27 18:03 ` Andrea Arcangeli
2010-10-27 18:03 ` Andrea Arcangeli
2010-10-28 8:00 ` KOSAKI Motohiro
2010-10-28 8:00 ` KOSAKI Motohiro
2010-10-28 15:12 ` Andrea Arcangeli
2010-10-28 15:12 ` Andrea Arcangeli
2010-10-29 2:23 ` KOSAKI Motohiro
2010-10-29 2:23 ` KOSAKI Motohiro
2010-10-28 10:20 ` Mel Gorman
2010-10-28 10:20 ` Mel Gorman
2010-11-02 2:04 ` Wu Fengguang
2010-11-02 2:04 ` Wu Fengguang
2010-10-28 2:31 ` Ed Tomlinson
2010-10-28 2:31 ` Ed Tomlinson
2010-10-28 15:22 ` Andrea Arcangeli
2010-10-28 15:22 ` Andrea Arcangeli
2010-08-05 6:14 ` [PATCH 5/7] vmscan: kill dead code in shrink_inactive_list() KOSAKI Motohiro
2010-08-05 6:14 ` KOSAKI Motohiro
2010-08-05 15:08 ` Minchan Kim
2010-08-05 15:08 ` Minchan Kim
2010-08-05 15:14 ` Mel Gorman
2010-08-05 15:14 ` Mel Gorman
2010-08-05 6:15 ` [PATCH 6/7] vmscan: remove PF_SWAPWRITE from __zone_reclaim() KOSAKI Motohiro
2010-08-05 6:15 ` KOSAKI Motohiro
2010-08-05 6:16 ` [PATCH 7/7] vmscan: isolated_lru_pages() stop neighbor search if neighbor can't be isolated KOSAKI Motohiro
2010-08-05 6:16 ` KOSAKI Motohiro
2010-08-05 15:25 ` Mel Gorman
2010-08-05 15:25 ` Mel Gorman
2010-08-05 15:40 ` Minchan Kim
2010-08-05 15:40 ` Minchan Kim
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