From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Hemminger Subject: Re: kernel 2.6.25-rc7 highly unstable on high load Date: Fri, 28 Mar 2008 13:23:59 -0700 Message-ID: <20080328132359.15573601@speedy> References: <47EBC641.8040405@cosmosbay.com> <20080327183745.M9944@visp.net.lb> <47EBEDC9.6080100@cosmosbay.com> <20080327.150308.205829519.davem@davemloft.net> <20080328052543.M60286@visp.net.lb> <47EC8701.1080604@cosmosbay.com> <20080328073854.M73368@visp.net.lb> <47ECA24C.10803@cosmosbay.com> <47ED1583.5010204@cosmosbay.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: Eric Dumazet , Denys Fedoryshchenko , netdev@vger.kernel.org, netfilter-devel@vger.kernel.org To: Eric Dumazet Return-path: In-Reply-To: <47ED1583.5010204@cosmosbay.com> Sender: netfilter-devel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org On Fri, 28 Mar 2008 16:57:55 +0100 Eric Dumazet wrote: > Eric Dumazet a =C3=A9crit : > > Denys Fedoryshchenko a =C3=A9crit : > >> Already patched and tested, it doesn't change anything. > >> > >> =20 > > > > We still leak dsts somewhere. > > > > You could try git bisect, or try to patch net/core/dst.c so that=20 > > dst_gc_task() (line 83) displays > > route informations for say 10 first entries found in the dst_busy_l= ist > > (refcnt, interface, source IP, dest IP, things like that) that coul= d=20 > > ring a bell given your netfilter rules or network conf. >=20 > I cooked a patch (untested) to implement this idea : >=20 > It should display lines similar to /proc/net/rt_cache (reusing the sa= me=20 > helper function) >=20 > I wonder how much the route cache really helps when it grows so large? Robert Olsson had suggested that turning it off when routing would help= =2E Perhaps the route cache is only really useful for local destinations? I= f the cost of maintaining the route cache exceeds the cost of just using the = existing route table, there is no value to having a route cache. -- To unsubscribe from this list: send the line "unsubscribe netfilter-dev= el" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html