Date: Sat, 2 Dec 2006 19:09:03 -0800 From: =?ISO-8859-1?Q?Ask_Bj=F8rn_Hansen?= <ask@develooper.com> To: freebsd-net@freebsd.org Subject: poor fastforwarding and polling performance Message-ID: <0B1CC4E4-DEBA-4E72-9ADD-FBFA4F1B7EC8@develooper.com>
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Hi, I'm playing with the settings for some PC Engines WRAP cards[1] (sis interfaces) that acts as mini routers on relatively slow networks. I am testing with iperf from two Linux boxes (that are plugged directly into an interface each on the FreeBSD box). The IP addresses used for the routing are managed by CARP, does that make a difference? Without polling or fastforwarding I get ~25-40Mbit throughput (~25Mbit with pf, ~40Mbit with pf disabled). (During this the box is completely unresponsive on the console). With fastforwarding I get ~7-15Mbit (!) With polling (ifconfig sis0 polling; ifconfig sis1 polling) I get about 1.5-2Mbit (pf doesn't make a difference). If I enable both fastforwarding and polling I seem to get slightly better results, but still Not Good. The only upside is that with polling enabled the box stays responsive, but it not much help. :-) Any ideas? - ask [1] http://www.pcengines.ch/wrap.htm -- http://develooper.com/ - http://askask.com/
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