From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Hemminger Subject: Re: [PATCH] iptables: lock free counters Date: Mon, 2 Mar 2009 14:02:43 -0800 Message-ID: <20090302140243.3aad4d5b@nehalam> References: <20090218051906.174295181@vyatta.com> <20090218052747.321329022@vyatta.com> <20090219114719.560999b5@extreme> <499DEF49.3040602@cosmosbay.com> <49A7F262.8040805@cosmosbay.com> <49ABBB21.9080401@trash.net> <49AC1B9D.5030107@cosmosbay.com> <49AC5617.8020404@trash.net> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: Eric Dumazet , David Miller , Rick Jones , netdev@vger.kernel.org, netfilter-devel@vger.kernel.org, "Paul E. McKenney" To: Patrick McHardy Return-path: Received: from mail.vyatta.com ([76.74.103.46]:49562 "EHLO mail.vyatta.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754696AbZCBWCr convert rfc822-to-8bit (ORCPT ); Mon, 2 Mar 2009 17:02:47 -0500 In-Reply-To: <49AC5617.8020404@trash.net> Sender: netfilter-devel-owner@vger.kernel.org List-ID: On Mon, 02 Mar 2009 22:56:39 +0100 Patrick McHardy wrote: > Eric Dumazet wrote: > > Patrick McHardy a =C3=A9crit : > >> Eric Dumazet wrote: > >>> real 0m1.810s > >>> user 0m0.000s > >>> sys 0m0.001s > >> Thats really slow ... > >> > >>> CONFIG_NO_HZ=3Dy > >>> CONFIG_HZ_1000=3Dy > >>> CONFIG_HZ=3D1000 > >>> > >>> One cpu is 100% handling softirqs, could it be the problem ? > >> Is this fixed by your RCU quiescent state fix? > >=20 > > Yes it is :) >=20 > Great, thanks :) I wonder if the RCU quiescent fix should go in 2.6.29 because it fixes other issues like route changing RCU latency under Dos attack. -- 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