From mboxrd@z Thu Jan 1 00:00:00 1970 From: Rick Jones Subject: Re: 32 core net-next stack/netfilter "scaling" Date: Tue, 27 Jan 2009 14:43:20 -0800 Message-ID: <497F8E08.6040303@hp.com> References: <497E361B.30909@hp.com> <497E42F4.7080201@cosmosbay.com> <497E44F6.2010703@hp.com> <497ECF84.1030308@cosmosbay.com> <497ED0A2.6050707@trash.net> <497F350A.9020509@cosmosbay.com> <497F457F.2050802@trash.net> <497F4C2F.9000804@hp.com> <497F5BCD.9060807@hp.com> <497F5F86.9010101@hp.com> <497F87E7.2000304@cosmosbay.com> <497F8ACD.2050203@hp.com> <497F8BDA.6080908@cosmosbay.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Cc: Netfilter Developers , Patrick McHardy , Linux Network Development list , Stephen Hemminger To: Eric Dumazet Return-path: In-Reply-To: <497F8BDA.6080908@cosmosbay.com> Sender: netdev-owner@vger.kernel.org List-Id: netfilter-devel.vger.kernel.org > > By any chance, are you using SLAB instead of SLUB ? Seems that way: sut42:~/net-next-2.6# grep SLAB .config CONFIG_SLAB=y CONFIG_SLABINFO=y # CONFIG_DEBUG_SLAB is not set sut42:~/net-next-2.6# grep SLUB .config # CONFIG_SLUB is not set The config file should be up under the base URL: ftp://ftp.netperf.org/iptable_scaling The system started as a Debian Lenny with a 2.6.26 kernel, and I did a make old config and mostly took defaults (save multiq) > While running your netperf session, issuing : > > grep conntrack /proc/slabinfo > > Would help to know hash dispertion on your machine. sut42:~/net-next-2.6# grep conntrack /proc/slabinfo nf_conntrack_expect 0 0 240 66 1 : tunables 120 60 8 : slabdata 0 0 0 nf_conntrack 276 742 304 53 1 : tunables 54 27 8 : slabdata 14 14 0 about a minute later it is: grep conntrack /proc/slabinfo nf_conntrack_expect 0 0 240 66 1 : tunables 120 60 8 : slabdata 0 0 0 nf_conntrack 315 742 304 53 1 : tunables 54 27 8 : slabdata 14 14 0 after about another 40 to 60 seconds it was: grep conntrack /proc/slabinfo nf_conntrack_expect 0 0 240 66 1 : tunables 120 60 8 : slabdata 0 0 0 nf_conntrack 314 742 304 53 1 : tunables 54 27 8 : slabdata 14 14 7