Date: Sat, 8 Jul 2000 23:50:14 -0600 From: "Kenneth D. Merry" <ken@kdm.org> To: Mike Silbersack <silby@silby.com> Cc: net@FreeBSD.ORG Subject: Re: new zero copy sockets and NFS patches Message-ID: <20000708235014.A12542@panzer.kdm.org> In-Reply-To: <Pine.BSF.4.21.0007090039390.88306-100000@achilles.silby.com>; from silby@silby.com on Sun, Jul 09, 2000 at 12:41:01AM -0500 References: <20000708232226.A12332@panzer.kdm.org> <Pine.BSF.4.21.0007090039390.88306-100000@achilles.silby.com>
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On Sun, Jul 09, 2000 at 00:41:01 -0500, Mike Silbersack wrote: > On Sat, 8 Jul 2000, Kenneth D. Merry wrote: > > > http://people.FreeBSD.ORG/~ken/zero_copy/ > > > > Feedback would be very welcome, we haven't gotten much response on this > > yet. > > Please put up graphs showing the performance increase; it's difficult to > understand the results you've posted so far, which may explain the general > lack of excitement. True enough, graphs help. Check out this paper: http://www.cs.duke.edu/ari/publications/end-system.pdf It is linked off the Trapeze publications page: http://www.cs.duke.edu/ari/publications/publications.html The above paper covers the performance benefits of zero copy, checksum offloading, larger MTUs, etc., and includes several graphs demonstrating the effect of those optimizations. The zero copy code used there is pretty much the same as the patches above. Ken -- Kenneth Merry ken@kdm.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message
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