linux-kernel - Re: [PATCH 1/1] fat: improve sync performance by grouping writes revised

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Date:	Wed, 01 Nov 2006 01:54:11 +0900
From:	OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>
To:	Holden Karau <holdenk@...dros.com>
Cc:	Josef Sipek <jsipek@....cs.sunysb.edu>,
	linux-kernel@...r.kernel.org, "akpm\@osdl.org" <akpm@...l.org>,
	linux-fsdevel@...r.kernel.org, holden@...scanfly.ca,
	holden.karau@...il.com, Nick Piggin <nickpiggin@...oo.com.au>,
	Jörn Engel <joern@...nheim.fh-wedel.de>
Subject: Re: [PATCH 1/1] fat: improve sync performance by grouping writes revised

Holden Karau <holdenk@...dros.com> writes:

> From: Holden Karau <holden@...scanfly.ca> http://www.holdenkarau.com
> This is an attempt at improving fat_mirror_bhs in sync mode [namely it
> writes all of the data for a backup block, and then blocks untill
> finished]. The old behavior would write & block in smaller chunks, so
> this should be slightly faster. It also removes the fix me requesting
> that it be fixed to behave this way :-)

Please post the result of performance test.  If it's fairly big, we
would be able to use async for mirror FAT. Instead, for hotplug device
we can provide the another option.
-- 
OGAWA Hirofumi <hirofumi@...l.parknet.co.jp>
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