| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Wed, 12 Dec 2012 14:57:56 -0000 From: "David Laight" <David.Laight@...LAB.COM> To: "Weiping Pan" <wpan@...hat.com>, <davem@...emloft.net> Cc: <brutus@...gle.com>, <netdev@...r.kernel.org> Subject: RE: [RFC PATCH net-next 4/4 V4] try to fix performance regression > MS BASE AF_UNIX FRIENDS TCP_STREAM_MS > 1 10.70 5.40 4.02 37% 74% > 2 28.01 9.67 7.97 28% 82% > 4 55.53 19.78 16.48 29% 83% > 8 115.40 38.22 33.51 29% 87% > 16 227.31 81.06 67.70 29% 83% > 32 446.20 166.59 129.31 28% 77% > 64 849.04 336.77 259.43 30% 77% > 128 1440.50 661.88 530.43 36% 80% > 256 2404.70 1279.67 1029.15 42% 80% > 512 4331.53 2501.30 1942.21 44% 77% > 1024 6819.78 4622.37 4128.10 60% 89% > 2048 10544.60 6348.81 6349.59 60% 100% > 4096 12830.41 8324.43 7984.43 62% 95% > 8192 13462.65 8355.49 11079.37 82% 132% > 16384 9960.87 10840.13 13037.81 130% 120% > 32768 8749.31 11372.15 15087.08 172% 132% > 65536 7580.27 12150.23 14971.42 197% 123% > 131072 6727.74 11451.34 13604.78 202% 118% > 262144 7673.14 11613.10 11436.97 149% 98% > 524288 7366.17 11675.95 11559.43 156% 99% > 1048576 6608.57 11883.01 10103.20 152% 85% > MS means Message Size in bytes, that is -m -M for netperf If I read that table correctly, it seems to imply that something goes badly wrong for 'normal' TCP loopback connections when the read/write size exceeds 8k. Putting effort into fixing that would appear to be more worthwhile than the 'friends' code. David -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists