From: Andreas Mohr <andi@lisas.de>
To: Wu Fengguang <fengguang.wu@intel.com>
Cc: Andreas Mohr <andi@lisas.de>, Jens Axboe <axboe@kernel.dk>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Minchan Kim <minchan.kim@gmail.com>,
Linux Memory Management List <linux-mm@kvack.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: 32GB SSD on USB1.1 P3/700 == ___HELL___ (2.6.34-rc3)
Date: Wed, 7 Apr 2010 13:17:02 +0200 [thread overview]
Message-ID: <20100407111702.GA3676@rhlx01.hs-esslingen.de> (raw)
In-Reply-To: <20100407070050.GA10527@localhost>
Hi,
On Wed, Apr 07, 2010 at 03:00:50PM +0800, Wu Fengguang wrote:
> Many applications (this one and below) are stuck in
> wait_on_page_writeback(). I guess this is why "heavy write to
> irrelevant partition stalls the whole system". They are stuck on page
> allocation. Your 512MB system memory is a bit tight, so reclaim
> pressure is a bit high, which triggers the wait-on-writeback logic.
"Your 512MB system memory is a bit tight".
Heh, try to survive making such a statement 15 years ago ;)
(but you likely meant this in the context of inducing a whopping 300MB write)
Thank you for your reply, I'll test the patch ASAP (with large writes
and Firefox sync mixed in), maybe this will improve things already.
Andreas Mohr
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next prev parent reply other threads:[~2010-04-07 11:17 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20100404221349.GA18036@rhlx01.hs-esslingen.de>
[not found] ` <20100405105319.GA16528@rhlx01.hs-esslingen.de>
2010-04-07 7:00 ` Wu Fengguang
2010-04-07 7:08 ` Wu Fengguang
2010-04-15 3:31 ` KOSAKI Motohiro
2010-04-15 4:19 ` Wu Fengguang
2010-04-15 4:32 ` KOSAKI Motohiro
2010-04-15 4:41 ` Wu Fengguang
2010-04-15 4:55 ` KOSAKI Motohiro
2010-04-15 5:19 ` Wu Fengguang
2010-04-16 3:16 ` [PATCH] vmscan: page_check_references() check low order lumpy reclaim properly KOSAKI Motohiro
2010-04-16 4:26 ` Minchan Kim
2010-04-16 5:33 ` KOSAKI Motohiro
2010-04-16 21:18 ` Andrew Morton
2010-05-13 2:54 ` KOSAKI Motohiro
2010-04-07 8:39 ` 32GB SSD on USB1.1 P3/700 == ___HELL___ (2.6.34-rc3) Minchan Kim
2010-04-07 8:52 ` Wu Fengguang
2010-04-07 11:17 ` Andreas Mohr [this message]
2010-04-08 19:46 ` Andreas Mohr
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