From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Garzik Subject: Re: Why is only one command issue per time in AHCI driver? Date: Tue, 18 Jan 2011 03:46:57 -0500 Message-ID: <4D355381.7040509@garzik.org> References: <4D2F3A86.3010503@garzik.org> <4D2FE384.4090405@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail-qw0-f46.google.com ([209.85.216.46]:36687 "EHLO mail-qw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751105Ab1ARIrD (ORCPT ); Tue, 18 Jan 2011 03:47:03 -0500 Received: by qwa26 with SMTP id 26so5635966qwa.19 for ; Tue, 18 Jan 2011 00:47:02 -0800 (PST) In-Reply-To: Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: seedrubbish@gmail.com Cc: Robert Hancock , =?UTF-8?B?576F56eJ6Yie?= , linux-ide@vger.kernel.org On 01/18/2011 02:56 AM, Seed wrote: > Hi Robert, > > On Fri, Jan 14, 2011 at 4:47 PM, Robert Hancock wrote: >> That sounds like the I/O pattern doesn't result in any concurrent transfers >> being executed. What kind of workload is this running? >> > > Do you have any suggestion about how to can get such a workload? Use multiple threads.