Date: Thu, 11 Aug 2005 12:25:59 +1000 From: Dave+Seddon <dave-sender-1932b5@seddon.ca> To: freebsd-net@freebsd.org Subject: Re: Why Ierrs is so high? Message-ID: <1123727160.64678.TMDA@seddon.ca> In-Reply-To: <D8F9019CEB620F4FB4CCD3274893B7474E49C7@bjngsmail01> References: <D8F9019CEB620F4FB4CCD3274893B7474E49C7@bjngsmail01>
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Greetings, Yeah I'd say there is something funny also. I've stuffed around with HZ and polling settings heaps and could only manage about 120MB/s-ish of HTTP traffic. I'm as running 5.4-stable from about 2-3 weeks ago. /etc/sysctl.conf kern.polling.enable=1 kern.polling.each_burst=50 #need to edit /usr/src/sys/kern/kern_poll.c for set this kern.polling.burst_max=1500 #DO NOT SET THIS HIGHER THAN 65536 * 2 (FREEBSD BUG) net.inet.tcp.sendspace=131072 net.inet.tcp.recvspace=131072 kern.random.sys.harvest.ethernet=0 kern.random.sys.harvest.interrupt=0 kern.ipc.somaxconn=1024 I still get lots of kern.polling.lost_polls and kern.polling.suspect. How do you edit the RXD is 256, TXD is 256? How do you view the errors when you set "sysctl hw.em0.stats=1"? 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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