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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This archive was generated by hypermail 2b29 : Mon Apr 15 2002 - 22:00:10 EST