From: Andreas Dilger <adilger@clusterfs.com>
To: "Jörn Engel" <joern@wohnheim.fh-wedel.de>
Cc: Alexander Nyberg <alexn@telia.com>,
viro@parcelfarce.linux.theplanet.co.uk,
linux-kernel@vger.kernel.org, Pavel Machek <pavel@ucw.cz>
Subject: Re: [PATCH] A generic_file_sendpage()
Date: Fri, 25 Jun 2004 14:05:33 -0600 [thread overview]
Message-ID: <20040625200533.GI31203@schnapps.adilger.int> (raw)
In-Reply-To: <20040625191924.GA8656@wohnheim.fh-wedel.de>
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On Jun 25, 2004 21:19 +0200, Jörn Engel wrote:
> On Wed, 9 June 2004 14:19:19 +0200, Alexander Nyberg wrote:
> > The sendfile() for all file systems remain unusable as it is right now,
> > only works for sending data to socket. But that should be as much
> > performance enhancing as this yes?
>
> A similar patch I've once written gave about 10% performance boost
> with warm caches. Your measurements are with could caches but still
> give a noticeable boost. Nice.
Yes, it would be nice to get this into the kernel, then eventually have
"cp" test if sendfile() works between two files. That would allow things
like remote file copy for network filesystems, COW, etc much easier.
Cheers, Andreas
--
Andreas Dilger
http://sourceforge.net/projects/ext2resize/
http://members.shaw.ca/adilger/ http://members.shaw.ca/golinux/
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next prev parent reply other threads:[~2004-06-25 20:06 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-06-08 15:44 downgrade_write replacement in remap_file_pages Andrea Arcangeli
2004-06-08 16:31 ` Andrew Morton
2004-06-08 16:39 ` Linus Torvalds
2004-06-08 17:05 ` David Howells
2004-06-08 22:33 ` Andrea Arcangeli
2004-06-08 19:04 ` David Howells
2004-06-08 19:36 ` William Lee Irwin III
2004-06-08 22:52 ` Andrea Arcangeli
2004-06-09 12:19 ` [PATCH] A generic_file_sendpage() Alexander Nyberg
2004-06-10 19:49 ` Pavel Machek
2004-06-25 19:19 ` Jörn Engel
2004-06-25 19:46 ` viro
2004-06-25 20:03 ` Jörn Engel
2004-06-26 0:53 ` Trond Myklebust
2004-06-28 11:41 ` Jörn Engel
2004-06-25 20:05 ` Andreas Dilger [this message]
2004-06-25 20:09 ` Jörn Engel
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