From: Hirokazu Takahashi <taka@valinux.co.jp>
To: nfs@lists.sourceforge.net
Cc: linux-kernel@vger.kernel.org
Subject: [NFS][PATCH] zerocopy NFS
Date: Mon, 08 Apr 2002 22:29:06 +0900 (JST) [thread overview]
Message-ID: <a8s62e$j9m$2@main.gmane.org> (raw)
Hello
I'm tuning knfsd and I implemented zerocopy knfsd.
Everyone knows knfsd copies file data many times,
so I tried to reduce the copies.
nfsd_read() doesn't copy filedata anymore.
This works pretty fine and performance is improved.
Following patches patches are against linux 2.5.7
ftp:/ftp.valinux.co.jp/pub/people/taka/tune/2.5.7/va01-knfsd-zerocopy-vfsread-2.5.7.patch
ftp:/ftp.valinux.co.jp/pub/people/taka/tune/2.5.7/va02-kmap-multplepages-2.5.7.patch
I also have patches against linux 2.4.18
ftp:/ftp.valinux.co.jp/pub/people/taka/tune/2.4.18/va01-knfsd-zerocopy-vfsread-2.4.18.patch
ftp:/ftp.valinux.co.jp/pub/people/taka/tune/2.4.18/va02-kmap-multplepages-2.4.18.patch
Now I'm designing new mechanism to send pagecache directly
using sendpage.
I'm waiting for your comments.
Regards,
Hirokazu Takahashi
VP Engineering Dept.
VA Linux Systems Japan
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next reply other threads:[~2002-04-08 13:28 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-04-08 13:29 Hirokazu Takahashi [this message]
-- strict thread matches above, loose matches on Subject: below --
2002-04-08 13:29 [NFS][PATCH] zerocopy NFS Hirokazu Takahashi
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