Messages in this thread | | | Date | Mon, 08 Apr 2002 22:29:06 +0900 (JST) | Subject | [NFS][PATCH] zerocopy NFS | From | Hirokazu Takahashi <> |
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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 - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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