From: Bart Van Assche <bvanassche@acm.org>
To: Fredrik Tolf <fredrik@dolda2000.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: I/O blocked while dirty pages are being flushed
Date: Sun, 24 Mar 2013 11:27:34 +0100 [thread overview]
Message-ID: <514ED516.4020009@acm.org> (raw)
In-Reply-To: <alpine.DEB.2.02.1303240543280.4028@shack.dolda2000.com>
On 03/24/13 06:12, Fredrik Tolf wrote:
> While this flush is running, I find that many a process goes into disk
> sleep waiting for the flush to complete. This includes the process
> manipulating the mmapped file whenever it tries to redirty a page
> currently waiting to be flushed, but also, for instance, programs that
> write() to log files (since, I guess, the buffer page backing the last
> written portion of the log file is being flushed).
Had you already encountered this article: Jonathan Corbet, The trouble
with stable pages, March 13, 2012 (http://lwn.net/Articles/486311/) ?
Bart.
next prev parent reply other threads:[~2013-03-24 10:27 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-03-24 5:12 Fredrik Tolf
2013-03-24 6:56 ` Eric Wong
2013-03-25 7:34 ` Fredrik Tolf
2013-03-24 10:27 ` Bart Van Assche [this message]
2013-03-25 7:31 ` Fredrik Tolf
2013-04-09 22:11 ` Jan Kara
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