Hi, a few month ago I ported DragonFlyBSD's IP checksum code to FreeBSD. My first try wasn't complete and I had forgotten it by the time. Now I hope I have addressed the former mistakes and it maybe included in the tree. ;) The patch can be found at http://generic.0xfce3.net/20060524-ipchecksum.patch This patch modifies the i386, amd64 and pc98 architectures. Matt Dillons new implementation is machine indepement, but there are some asm files/code with seems for me i386 centric. I don't know assembler, so I can't tell much about it. I applied the patch to RELENG_6 and have done a simple netperf benchmark. The machine was a PIII 900. The ministat output: ---------------------------------------------------------------------------- x netperf-localhost-plain.txt + netperf-localhost-ncksum.txt +--------------------------------------------------------------------------+ | x x x x + ++ + | |xx x x xx xxx x x x x+x *+x x + +++ ++ + + + +++++ +| | |__________M_A____________| |__________A___________| | +--------------------------------------------------------------------------+ N Min Max Median Avg Stddev x 22 707.31 730.41 717.37 718.53909 6.7389076 + 22 725.57 746.46 736.535 736.51727 6.3001188 Difference at 95.0% confidence 17.9782 +/- 3.96904 2.50205% +/- 0.552377% (Student's t, pooled s = 6.5232) ---------------------------------------------------------------------------- Any comments, correctures are very appreciated. best regards, Gordon -- Gordon Bergling <GBergling at 0xfce3.net> http://www.0xFCE3.net/ PGP Fingerprint: 7732 9BB1 5013 AE8B E42C 28E0 93B9 D32B C76F 02A0 RIPE-HDL: MDTP-RIPE "Minimal Electronic Music"Received on Wed May 24 2006 - 16:08:14 UTC
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