Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759283AbYGAAMQ (ORCPT ); Mon, 30 Jun 2008 20:12:16 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753696AbYGAAME (ORCPT ); Mon, 30 Jun 2008 20:12:04 -0400 Received: from quechua.inka.de ([193.197.184.2]:49953 "EHLO mail.inka.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753173AbYGAAMD (ORCPT ); Mon, 30 Jun 2008 20:12:03 -0400 From: Bernd Eckenfels To: linux-kernel@vger.kernel.org Subject: Re: Higher than expected disk write(2) latency Organization: Private Site running Debian GNU/Linux In-Reply-To: <48695C20.6050704@fastmq.com> X-Newsgroups: ka.lists.linux.kernel User-Agent: tin/1.7.8-20050315 ("Scalpay") (UNIX) (Linux/2.6.13.4 (i686)) Message-Id: Date: Tue, 01 Jul 2008 02:11:59 +0200 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 574 Lines: 15 In article <48695C20.6050704@fastmq.com> you wrote: > Yes, that's one thing we want to do. However, we cannot assume that > every user will have SSD, thus we should try to get the best latencies > possible even on standard HD. In that case controller (SAN) based write back cache as well as Striping helps a bit. Gruss Bernd -- 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/