From: Jeremy Fitzhardinge <jeremy@goop.org>
To: Ian Pratt <m+Ian.Pratt@cl.cam.ac.uk>
Cc: "Graham, Simon" <Simon.Graham@stratus.com>,
xen-devel@lists.xensource.com
Subject: Re: Reducing impact of save/restore/dump on Dom0
Date: Tue, 06 Feb 2007 15:20:07 -0800 [thread overview]
Message-ID: <45C90D27.6040903@goop.org> (raw)
In-Reply-To: <8A87A9A84C201449A0C56B728ACF491E04F46D@liverpoolst.ad.cl.cam.ac.uk>
Ian Pratt wrote:
> As for making the IO bypass the buffer cache, I'm not sure what the best
> way to do this is. There are some occasions where we want the restore
> image to be in the buffer cache (e.g. as used by the fault injection
> testing for fast domain restart) but I agree that its not helpful in the
> normal case. My first inclination would be O_DIRECT, but there may be a
> better way.
O_DIRECT is strongly deprecated. fadvise(..., FADV_DONTNEED, ...) is
the preferred interface.
J
next prev parent reply other threads:[~2007-02-06 23:20 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-06 15:43 Reducing impact of save/restore/dump on Dom0 Graham, Simon
2007-02-06 16:23 ` John Levon
2007-02-06 17:36 ` Iustin Pop
2007-02-06 17:46 ` Graham, Simon
2007-02-06 18:35 ` Iustin Pop
2007-02-06 23:00 ` Ian Pratt
2007-02-06 23:20 ` Jeremy Fitzhardinge [this message]
2007-02-07 6:40 ` Rusty Russell
2007-02-07 7:41 ` Jeremy Fitzhardinge
2007-02-07 12:11 ` Andi Kleen
2007-02-07 12:52 ` Ian Pratt
2007-02-07 12:58 ` Andi Kleen
-- strict thread matches above, loose matches on Subject: below --
2007-02-06 17:25 Graham, Simon
2007-02-06 19:21 Graham, Simon
2007-02-07 12:56 Graham, Simon
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