Date: Sat, 17 Feb 2007 00:53:10 -0800 From: Justin Robertson <justin@sk1llz.net> To: garcol@postino.it, freebsd-performance@freebsd.org Subject: Re: : 6.x, 4.x ipfw/dummynet pf/altq - network performance issues Message-ID: <45D6C276.2070207@sk1llz.net> In-Reply-To: <001401c7526f$7b848b80$1df522d4@elitel> References: <001401c7526f$7b848b80$1df522d4@elitel>
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Sack was never enabled, the packets in the flood had sack set. rtmaxcache was default, what made you think I had changed it? I was not running SMP, as I explained. More over suggestions to do ether.ipfw result in terrible performance, etc. A 4.11 bridge and 4.11 router in series move all packets without issue. I'll play with rtexpire and rtmin garcol@postino.it wrote: > Hi, > if you disable sack, what's happend? > (sysctl net.inet.tcp.sack.enable=0) > (Are Memory and cpu OK?) > > > For route problem you can set this to a low value, for example 10 > sysctl net.inet.ip.rtexpire: 10 > See http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/securing-freebsd.html > > Why do you modify this?, reset to original 4.x values. > net.inet.ip.rtmaxcache=1024 > > > Try to set this to 0 disable the optimization of the bandwidth delay product for all TCP connections (but it's useful on GE interface). > sysctl net.inet.tcp.inflight.enable=0 > > > > If you use a SMP kernel you can try to set this or try to set anyway: > > sysctl machdep.hyperthreading_allowed=1 > sysctl machdep.cpu_idle_hlt=0 > > See kern/83406: [smp] em/bge drivers: severe performance loss under SMP > > > Let's me know > Regards > Alessandro > _______________________________________________ > freebsd-performance@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-performance > To unsubscribe, send any mail to "freebsd-performance-unsubscribe@freebsd.org" > > -- Justin
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