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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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