Date: Mon, 08 Oct 2001 09:06:10 -0500 From: Eric Anderson <anderson@centtech.com> To: Danny Braniss <danny@cs.huji.ac.il> Cc: freebsd-hackers@freebsd.org, stable@freebsd.org Subject: Re: strange network performace Message-ID: <3BC1B2D2.E42F3704@centtech.com> References: <E15qawr-0000An-00@pampa.cs.huji.ac.il>
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Oh, well, I thought you said "10mb/s", not "10MB/s" .. that makes it a bit different. I wonder if it could still be a tcp window size or something.. Try these sysctl's on C: vfs.nfs.gatherdelay=0 vfs.nfs.async=1 vfs.vmiodirenable=1 kern.ipc.maxsockbuf=2097152 kern.ipc.somaxconn=8192 kern.ipc.maxsockets=16424 kern.maxfiles=65536 kern.maxfilesperproc=32768 net.inet.tcp.rfc1323=1 net.inet.tcp.delayed_ack=0 net.inet.tcp.sendspace=65535 net.inet.tcp.recvspace=65535 net.inet.udp.recvspace=65535 net.inet.udp.maxdgram=57344 net.local.stream.recvspace=65535 net.local.stream.sendspace=65535 Just a try.. Danny Braniss wrote: > > > And what happens when you go from A or B to C? Have you been running a top or systat -vmstat while this is happening? > > I'm thinking it might be a purely IO thing, on the proc box. I have seen similar slowness with the default FreeBSD > > install on single proc boxes, but a few sysctl's seem to do the trick. > > a reminder: > A -> NetAPP > B -> NetAPP > C -> NetAPP > is fine, im running the same test, and the results are consitant, ~10MGBs > > so that should eliminate network/switch/port/cable problems, right? > > btw, no network errors are reported, neither from the hosts nor the switches. > > danny > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-hackers" in the body of the message -- ------------------------------------------------------------- Eric Anderson anderson@centtech.com Centaur Technology # rm -rf /bin/laden ------------------------------------------------------------- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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