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Date: Fri, 28 Mar 2008 08:46:20 +0100 From: Eric Dumazet <dada1@...mosbay.com> To: Denys Fedoryshchenko <denys@...p.net.lb> Cc: netdev@...r.kernel.org, netfilter-devel@...r.kernel.org Subject: Re: kernel 2.6.25-rc7 highly unstable on high load Denys Fedoryshchenko a écrit : > Already patched and tested, it doesn't change anything. > > We still leak dsts somewhere. You could try git bisect, or try to patch net/core/dst.c so that dst_gc_task() (line 83) displays route informations for say 10 first entries found in the dst_busy_list (refcnt, interface, source IP, dest IP, things like that) that could ring a bell given your netfilter rules or network conf. > >> Maybe you are a litle bit too fast for "ip route flush cache" :) >> >> It used to work like that : schedule a timer to start a flush in >> about 2 seconds. A flush meaning : scan the whole table and delete >> all entries. >> >> On machines with 4 millions dst entries, this was using too much >> time and eventually crashing. >> >> On recent kernels, each rtable entry has a special field named >> rt_genid, so that "ip route flush cache" doesnt have to scan the >> whole table, but only change the global genid. rtables entries will >> be deleted later, when their rt_genid is found to be different than >> the global genid. >> >> Please try the patch that was suggested yesterday, as it is probably >> the cure your router needs. >> >> http://git2.kernel.org/?p=linux/kernel/git/davem/net- >> > 2.6.git;a=commitdiff;h=7c0ecc4c4f8fd90988aab8a95297b9c0038b6160 > -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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