From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Garzik Subject: Re: [PATCH] speed up SATA Date: Sun, 28 Mar 2004 14:06:34 -0500 Sender: linux-ide-owner@vger.kernel.org Message-ID: <4067223A.1040006@pobox.com> References: <40661049.1050004@yahoo.com.au> <406611CA.3050804@pobox.com> <406612AA.1090406@yahoo.com.au> <4066156F.1000805@pobox.com> <20040328141014.GE24370@suse.de> <40670BD9.9020707@pobox.com> <20040328173508.GI24370@suse.de> <40670FDB.6080409@pobox.com> <20040328175436.GL24370@suse.de> <20040328180809.GB1087@mail.shareable.org> <20040328181502.GO24370@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from parcelfarce.linux.theplanet.co.uk ([195.92.249.252]:35293 "EHLO www.linux.org.uk") by vger.kernel.org with ESMTP id S262356AbUC1TGs (ORCPT ); Sun, 28 Mar 2004 14:06:48 -0500 In-Reply-To: <20040328181502.GO24370@suse.de> List-Id: linux-ide@vger.kernel.org To: Jens Axboe Cc: Jamie Lokier , Nick Piggin , linux-ide@vger.kernel.org, Linux Kernel , Andrew Morton Jens Axboe wrote: > Yep it sure does, but try and find a drive attached to a SATA controller > that cannot do 40MiB/sec (or something like that). Storage doesn't move > _that_ fast, you can keep up. Nanosecond latencies and disturbingly high throughput are already possibly today :) Consider the battery-backed RAM gadgets that present themselves as ATA devices, or nbd over 10gige network. In fact I'm about to strip down drivers/scsi/sata_promise.c to a driver that just talks to the DIMM, and another else: drivers/block/pdc_mem.c. At that point you're really just looking at the PCI bus and RAM limits... Jeff