From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id ; Fri, 29 Jun 2001 05:36:32 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id ; Fri, 29 Jun 2001 05:36:22 -0400 Received: from lsmls01.we.mediaone.net ([24.130.1.20]:29907 "EHLO lsmls01.we.mediaone.net") by vger.kernel.org with ESMTP id ; Fri, 29 Jun 2001 05:36:13 -0400 Message-ID: <3B3C4CB4.6B3D2B2F@kegel.com> Date: Fri, 29 Jun 2001 02:39:00 -0700 From: Dan Kegel X-Mailer: Mozilla 4.76 [en] (X11; U; Linux 2.2.14-5.0 i686) X-Accept-Language: en MIME-Version: 1.0 To: "linux-kernel@vger.kernel.org" Subject: O_DIRECT please; Sybase 12.5 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org At work I had to sit through a meeting where I heard the boss say "If Linux makes Sybase go through the page cache on reads, maybe we'll just have to switch to Solaris. That's a serious performance problem." All I could say was "I expect Linux will support O_DIRECT soon, and Sybase will support that within a year." Er, so did I promise too much? Andrea mentioned O_DIRECT recently ( http://marc.theaimsgroup.com/?l=linux-kernel&m=99253913516599&w=2, http://lwn.net/2001/0510/bigpage.php3 ) Is it supported yet in 2.4, or is this a 2.5 thing? And what are the chances Sybase will support that flag any time soon? I just read on news://forums.sybase.com/sybase.public.ase.linux that Sybase ASE 12.5 was released today, and a 60 day eval is downloadable for NT and Linux. I'm downloading now; it's a biggie. It supports raw partitions, which is good; that might satisfy my boss (although the administration will be a pain, and I'm not sure whether it's really supported by Dell RAID devices). I'd prefer O_DIRECT :-( Hope somebody can give me encouraging news. Thanks, Dan