From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tore Anderson Subject: Re: SMP load balancing of softirqs Date: Thu, 29 Jan 2009 12:23:25 +0100 Message-ID: <498191AD.7010302@redpill-linpro.com> References: <49817DD4.1010402@redpill-linpro.com> <1233226181.13705.24.camel@enterprise.ims-firmen.de> Mime-Version: 1.0 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1233226181.13705.24.camel@enterprise.ims-firmen.de> Sender: netfilter-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="us-ascii" To: Thomas Jacob Cc: netfilter@vger.kernel.org * Thomas Jacob > Some newer NICs (some of Intel's for instance) support several packet > queues to make it possible to deal with just this problem. > > Check out http://lwn.net/Articles/289137/ for a start... Interesting link, thanks! However, I was under the impression that the problem is incoming (RX) frames, that causes an interrupt to be raised on a certain CPU (core) which in turn causes the frame to be processed by that particular CPU by the NET_RX softirq handler. The multiqueue patch seem to be about being able to submit outgoing (TX) frames to multiple hardware queues. So I don't think it will make much of a difference for me? > It would be great if you'd let the list know of the results should you > try to use one of the multiqueue NICs for a netfilter firewall, I for > one am very curious... I'll remember that. Thanks again! Best regards, -- Tore Anderson Redpill Linpro AS - http://www.redpill-linpro.com/