Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753342AbZISXTO (ORCPT ); Sat, 19 Sep 2009 19:19:14 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752956AbZISXTN (ORCPT ); Sat, 19 Sep 2009 19:19:13 -0400 Received: from outbound.icp-qv1-irony-out6.iinet.net.au ([203.59.1.109]:46493 "EHLO outbound.icp-qv1-irony-out6.iinet.net.au" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752841AbZISXTN (ORCPT ); Sat, 19 Sep 2009 19:19:13 -0400 X-Greylist: delayed 600 seconds by postgrey-1.27 at vger.kernel.org; Sat, 19 Sep 2009 19:19:12 EDT X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AgoBAKcBtUp8qNxw/2dsb2JhbAAIy3qEGwU X-IronPort-AV: E=Sophos;i="4.44,416,1249228800"; d="scan'208";a="7920586" Subject: Re: tickless and HZ=1000 throughput advantage? From: Ben Nizette To: Daniel J Blueman Cc: Arjan van de Ven , Linux Kernel In-Reply-To: <6278d2220909191050l19f2a446r5ccf1907fd963096@mail.gmail.com> References: <6278d2220909190747n62f7036dj2e5231fcdc4730fb@mail.gmail.com> <20090919165501.65d77294@infradead.org> <6278d2220909191050l19f2a446r5ccf1907fd963096@mail.gmail.com> Content-Type: text/plain Date: Sun, 20 Sep 2009 09:12:29 +1000 Message-Id: <1253401950.7587.7.camel@ben-desktop> Mime-Version: 1.0 X-Mailer: Evolution 2.26.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 591 Lines: 16 On Sat, 2009-09-19 at 18:50 +0100, Daniel J Blueman wrote: > Agreed. Do you think there is still a small case for moving to HZ=1000 > (given it's effectively free) in situations like: Sure HZ=1000 gives you more accurate sleeps, that's kind of the point, but since when has it been "effectively free"? http://lwn.net/Articles/331607/ --Ben. -- 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/