Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753834Ab1DLLyd (ORCPT ); Tue, 12 Apr 2011 07:54:33 -0400 Received: from cantor2.suse.de ([195.135.220.15]:37932 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751096Ab1DLLyc (ORCPT ); Tue, 12 Apr 2011 07:54:32 -0400 Date: Tue, 12 Apr 2011 13:54:26 +0200 (CEST) From: Jiri Kosina X-X-Sender: jikos@twin.jikos.cz To: Adam McLaurin Cc: Will Newton , linux-kernel@vger.kernel.org Subject: Re: Loopback and Nagle's algorithm In-Reply-To: <1302606246.21782.1440195277@webmail.messagingengine.com> Message-ID: References: <1302575869.13492.1440076201@webmail.messagingengine.com> <1302606246.21782.1440195277@webmail.messagingengine.com> User-Agent: Alpine 2.00 (LRH 1167 2008-08-23) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 671 Lines: 20 On Tue, 12 Apr 2011, Adam McLaurin wrote: > > It may be caused by an increase in context switch rate, as both sender > > and receiver are on the same machine. > > I'm not sure that's what's happening, since the box where I'm running > this test has 8 physical CPU's and 32 cores in total. Have you tried firing up the testcase under perf, to see what it reveals as the bottleneck? -- Jiri Kosina SUSE Labs, Novell Inc. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/