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
next prev parent reply other threads:[~2010-04-07 11:17 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-04 22:13 32GB SSD on USB1.1 P3/700 == ___HELL___ (2.6.34-rc3) Andreas Mohr
2010-04-04 23:31 ` Gábor Lénárt
2010-04-05 10:53 ` Andreas Mohr
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
2010-04-08 20:12 ` Bill Davidsen
2010-04-08 20:35 ` Andreas Mohr
2010-04-08 22:01 ` Bill Davidsen
2010-04-09 15:56 ` Ben Gamari
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