Date: Sat, 8 Oct 2005 10:03:56 +0800 From: "Mao Shou Yan" <david.mao@thomson.net> To: "Gleb Smirnoff" <glebius@FreeBSD.org> Cc: freebsd-net@freebsd.org Subject: RE: problems with em(4) Message-ID: <31021C278A7A6B4AB95E9A085C3552181F78F4@bjngsmail01>
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I enable fast forwarding! With or without ipfw, result is the same. -----Original Message----- From: Gleb Smirnoff [mailto:glebius@FreeBSD.org]=20 Sent: 2005=C4=EA10=D4=C23=C8=D5 3:18 To: Mao Shou Yan Cc: freebsd-net@FreeBSD.org Subject: Re: problems with em(4) On Fri, Aug 12, 2005 at 01:48:59PM +0800, Mao Shou Yan wrote: M> I have a machine running 5.4 stable, with 3 em cards: M>=20 M> (1) Two 82543GC with fiber=20 M>=20 M> (2) One 82544 M>=20 M> All of them are shared irq 11( from vmstat -i) M>=20 M> =20 M>=20 M> The problem is: M>=20 M> After the system run about 3 hours, there will be large = "Ierrs" M> with the em0(BTW, em0 is in promisc mode). M>=20 M> I use "sysctl hw.em0.stats=3D1", found there are a lot of = "missed M> packets" and some "Receive with no buffers". M>=20 M> Em0 is in polling mode, and hz is 2000, burst_max and M> each_burst is the default value. M>=20 M> The system is not heavy loaded, incoming rates of em0 is = less M> than 150Mbits/s. em1 and em2 are not connected. M>=20 M> And pps is less than 30k. M>=20 M> After 3 hours, the ierrs raise quickly every 1 minutes! M>=20 M> From pciconf, I found the driver version is "1.7.35". M>=20 M> =20 M>=20 M> I think is a problem with em(4) driver. M>=20 M> Anyone meet such condition? Do you have ip fastforwarding enabled? Do you use any firewall filtering or any other additional packet processing on your router? --=20 Totus tuus, Glebius. GLEBIUS-RIPN GLEB-RIPE
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