From mboxrd@z Thu Jan 1 00:00:00 1970 From: Evgeniy Polyakov Subject: Re: Userspace network stack and netchannels. Date: Wed, 26 Sep 2007 17:22:34 +0400 Message-ID: <20070926132234.GA18626@2ka.mipt.ru> References: <20070925180043.GA16698@2ka.mipt.ru> <1190812125.4257.2.camel@localhost> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: netdev@vger.kernel.org To: jamal Return-path: Received: from relay.2ka.mipt.ru ([194.85.82.65]:55731 "EHLO 2ka.mipt.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751948AbXIZNW5 (ORCPT ); Wed, 26 Sep 2007 09:22:57 -0400 Content-Disposition: inline In-Reply-To: <1190812125.4257.2.camel@localhost> Sender: netdev-owner@vger.kernel.org List-Id: netdev.vger.kernel.org Hi Jamal. On Wed, Sep 26, 2007 at 09:08:45AM -0400, jamal (hadi@cyberus.ca) wrote: > Those numbers look impressive. How mysterious do things get in SMP? > Sorry havent had time to stare at the code. How do you measure cpu you > quoted? I did not checked how netchannels and userspace stack behaves on SMP just because I do not have SMP test machines. Getting into account that netchannels have smaller number of locks (actually only one to queue skb) compared to sockets, it should not behave worse, but I did not test that. CPU usage was obtained via /proc/$pid statistics. -- Evgeniy Polyakov