Date: Sun, 2 Oct 2005 23:17:59 +0400 From: Gleb Smirnoff <glebius@FreeBSD.org> To: Mao Shou Yan <david.mao@thomson.net> Cc: freebsd-net@FreeBSD.org Subject: Re: problems with em(4) Message-ID: <20051002191759.GZ45345@cell.sick.ru> In-Reply-To: <D8F9019CEB620F4FB4CCD3274893B7474E4EF5@bjngsmail01> References: <D8F9019CEB620F4FB4CCD3274893B7474E4EF5@bjngsmail01>
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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> M> (1) Two 82543GC with fiber M> M> (2) One 82544 M> M> All of them are shared irq 11( from vmstat -i) M> M> M> M> The problem is: M> M> After the system run about 3 hours, there will be large "Ierrs" M> with the em0(BTW, em0 is in promisc mode). M> M> I use "sysctl hw.em0.stats=1", found there are a lot of "missed M> packets" and some "Receive with no buffers". M> M> Em0 is in polling mode, and hz is 2000, burst_max and M> each_burst is the default value. M> M> The system is not heavy loaded, incoming rates of em0 is less M> than 150Mbits/s. em1 and em2 are not connected. M> M> And pps is less than 30k. M> M> After 3 hours, the ierrs raise quickly every 1 minutes! M> M> From pciconf, I found the driver version is "1.7.35". M> M> M> M> I think is a problem with em(4) driver. M> 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? -- Totus tuus, Glebius. GLEBIUS-RIPN GLEB-RIPE
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