From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Lameter <clameter@sgi.com>
Subject: Re: More Large blocksize benchmarks
Date: Mon, 15 Oct 2007 17:44:08 -0700 (PDT)
Message-ID: <Pine.LNX.4.64.0710151741200.19172@schroedinger.engr.sgi.com>
References: <20071016002231.GA21378@think.oraclecorp.com>
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Cc: David Chinner <dgc@sgi.com>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Nathan Scott <nscott@aconex.com>,
	Andrea Arcangeli <andrea@suse.de>,
	Nick Piggin <nickpiggin@yahoo.com.au>,
	Mel Gorman <mel@skynet.ie>, linux-fsdevel@vger.kernel.org,
	linux-kernel@vger.kernel.org, Christoph Hellwig <hch@lst.de>,
	William Lee Irwin III <wli@holomorphy.com>,
	Jens Axboe <jens.axboe@oracle.com>,
	Badari Pulavarty <pbadari@gmail.com>,
	Maxim Levitsky <maximlevitsky@gmail.com>,
	Fengguang Wu <fengguang.wu@gmail.com>,
	swin wang <wangswin@gmail.com>, totty.lu@gmail.com,
	hugh@veritas.com, joern@lazybastard.org
To: Chris Mason <chris.mason@oracle.com>
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On Mon, 15 Oct 2007, Chris Mason wrote:

> Dave reported that XFS saw much higher write throughput with large
> blocksizes, but so far I'm seeing the most benefits during reads.

Dave's tests were done with an early large blocksize patchset that had 
issues with readahead. More recent versions have the fixes by Fengguang 
that address the issue.