From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752295Ab0CBLjr (ORCPT ); Tue, 2 Mar 2010 06:39:47 -0500 Received: from mail.gmx.net ([213.165.64.20]:36121 "HELO mail.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1750776Ab0CBLjq (ORCPT ); Tue, 2 Mar 2010 06:39:46 -0500 X-Authenticated: #14349625 X-Provags-ID: V01U2FsdGVkX1+M4UFO3zSMLfYzNPM8RZkbm+2WikW2cIpgm+TLQ3 GnoJ3jPjDFSDZI Subject: Re: [rfc/rft][patch] should use scheduler sync hint in tcp_prequeue()? From: Mike Galbraith To: Eric Dumazet Cc: netdev , LKML , Ingo Molnar In-Reply-To: <1267529273.2964.111.camel@edumazet-laptop> References: <1267522901.25906.101.camel@marge.simson.net> <1267529273.2964.111.camel@edumazet-laptop> Content-Type: text/plain Date: Tue, 02 Mar 2010 12:39:42 +0100 Message-Id: <1267529982.9365.7.camel@marge.simson.net> Mime-Version: 1.0 X-Mailer: Evolution 2.24.1.1 Content-Transfer-Encoding: 7bit X-Y-GMX-Trusted: 0 X-FuHaFi: 0.66000000000000003 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2010-03-02 at 12:27 +0100, Eric Dumazet wrote: > This wake_up_interruptible_sync_poll() change might be good for loopback > communications (and pleases tbench), but is it desirable for regular > multi flows NIC traffic ? If you can take high frequency cache misses, likely yes. For localhost, that's pretty much guaranteed currently (ergo the question). -Mike