Date: Thu, 11 Aug 2005 14:03:17 +1000 From: Dave+Seddon <dave-sender-1932b5@seddon.ca> To: "Mao Shou Yan" <david.mao@thomson.net> Cc: freebsd-net@freebsd.org Subject: Re: Why Ierrs is so high? Message-ID: <1123732998.72461.TMDA@seddon.ca> In-Reply-To: <D8F9019CEB620F4FB4CCD3274893B7474E49C7@bjngsmail01> References: <D8F9019CEB620F4FB4CCD3274893B7474E49C7@bjngsmail01>
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Greetings, Also, how were you measuring the packet and data rate? What were you using to generate the traffic? I used /usr/ports/benchmark/siege and /usr/ports/www/thttpd. Regards, Dave Mao Shou Yan writes: > Hi, all, > > I have a machine with 3 Intel pro1000 cards. > > em0 is in promisc mode, whose MAC controller is 82543 using fiber line > connected. > > em1, em2 is not connected with cable. > > Driver configuration is the default, RXD is 256, TXD is 256. > > > > Result of "netstat -i": > > > > Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Coll > em0 1500 <Link#1> 00:03:47:de:72:36 1701943600 369823630 1 0 0 > em1 1500 <Link#2> 00:10:dc:56:8b:b5 5561 0 4608 0 0 > em2 1500 <Link#3> 00:03:47:42:6d:17 0 0 0 0 0 > > > > Pps of em0 is about 20k/pps, and bandwidth is no more than 150Mbps. > > When I use "sysctl hw.em0.stats=1", I found the number of "missed > packets" is very high, which is about equal Ierrs. > > And I also found the number of"receive with no buffers"is raising with > about 10 per second. > > > > The machine is no extra load, only a raw system with em0 in promisc > mode! > > > > I'm looking forward your help! > > _______________________________________________ > freebsd-net@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org"
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