From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S267274AbTGHMYF (ORCPT ); Tue, 8 Jul 2003 08:24:05 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S267275AbTGHMYF (ORCPT ); Tue, 8 Jul 2003 08:24:05 -0400 Received: from e33.co.us.ibm.com ([32.97.110.131]:54444 "EHLO e33.co.us.ibm.com") by vger.kernel.org with ESMTP id S267274AbTGHMYC (ORCPT ); Tue, 8 Jul 2003 08:24:02 -0400 Date: Tue, 8 Jul 2003 23:43:26 +0530 From: Suparna Bhattacharya To: Wim ten Have Cc: linux-kernel@vger.kernel.org, linux-aio@kvack.org Subject: Re: Bug fix in AIO initialization Message-ID: <20030708234326.A2352@in.ibm.com> Reply-To: suparna@in.ibm.com References: <41F331DBE1178346A6F30D7CF124B24B2A4880@fmsmsx409.fm.intel.com> <20030708115345.5e6e5bbc.wtenhave@sybase.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5.1i In-Reply-To: <20030708115345.5e6e5bbc.wtenhave@sybase.com>; from wtenhave@sybase.com on Tue, Jul 08, 2003 at 11:53:45AM +0200 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Jul 08, 2003 at 11:53:45AM +0200, Wim ten Have wrote: > Is there a definition how long system calls take when i issue > asynchronous read/write requests? The purpose is to not block > but occasionally i measure up to 100's of milliseconds before > the request is accepted or returns that there are currently > no resources making me try again. Is this normal? Is this with vanilla 2.5 kernels or recent -mm kernels ? Are you doing async O_DIRECT reads/writes or regular filesystem aio read/writes ? Regards Suparna -- Suparna Bhattacharya (suparna@in.ibm.com) Linux Technology Center IBM Software Labs, India