linux-kernel - Re: [PATCH] fadvise: perform WILLNEED readahead in a workqueue

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Message-ID: <20121215223448.08272fd5@pyramind.ukuu.org.uk>
Date:	Sat, 15 Dec 2012 22:34:48 +0000
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	Eric Wong <normalperson@...t.net>
Cc:	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] fadvise: perform WILLNEED readahead in a workqueue

On Sat, 15 Dec 2012 00:54:48 +0000
Eric Wong <normalperson@...t.net> wrote:

> Applications streaming large files may want to reduce disk spinups and
> I/O latency by performing large amounts of readahead up front


How does it compare benchmark wise with a user thread or using the
readahead() call ?
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