linux-kernel - Re: Nigel's current for-rafael queue

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Message-ID: <20100803065543.GF3344@ucw.cz>
Date:	Tue, 3 Aug 2010 08:55:43 +0200
From:	Pavel Machek <pavel@....cz>
To:	Nigel Cunningham <nigel@...onice.net>
Cc:	"Rafael J. Wysocki" <rjw@...k.pl>,
	Linux PM <linux-pm@...ts.linux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	TuxOnIce-devel <tuxonice-devel@...onice.net>
Subject: Re: Nigel's current for-rafael queue

On Wed 2010-06-02 22:18:59, Nigel Cunningham wrote:
> Hi all.
> 
> Here is my current patch queue.
> 
> Taken together, the patches implement the separation of low level
> block i/o into a separate file, switch from using swap_map_pages
> to extents stores prior to the 'header' page and implement fully
> asynchronous (rather than batched I/O). I have only run it under
> VMware so far, but would estimate a doubling in speed due to the
> async i/o.

Do you have any numbers from real hw? Could similar speedup be
accomplished by just increasing the batch size?
							Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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