From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tejun Heo Subject: Re: How to determine performance bottleneck? Date: Tue, 14 Oct 2008 15:12:20 +0900 Message-ID: <48F43844.9080603@kernel.org> References: <20081013202836.3fc62c3e@mjolnir.drzeus.cx> <48F3D8E2.8000006@kernel.org> <20081014070728.386a9cf2@mjolnir.drzeus.cx> <48F43025.8050705@kernel.org> <20081014080304.65445c51@mjolnir.drzeus.cx> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: Received: from hera.kernel.org ([140.211.167.34]:38700 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751374AbYJNGPn (ORCPT ); Tue, 14 Oct 2008 02:15:43 -0400 In-Reply-To: <20081014080304.65445c51@mjolnir.drzeus.cx> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Pierre Ossman Cc: Jeff Garzik , linux-ide@vger.kernel.org Pierre Ossman wrote: > On Tue, 14 Oct 2008 14:37:41 +0900 > Tejun Heo wrote: > >> Pierre Ossman wrote: >>> Bummer. Is this per port, or is it the PCIe side of the chip that is >>> limited to this speed? >> I think it's on the host bus side. >> >>> What do the silicon image guys have to say about it? >> ISTR they confirmed the problem but I don't remember talking too much >> about it. >> > > The optimist in me was hoping that this could be a problem that can be > sidestepped with a clever enough implementation. :) > >>>> There's 3132-2 chip on the market. Maybe it's worth a try? >>> Now that model number was not something that was easily found on >>> google, nor on silicon image's website. Know of any boards with that >>> chip? >> Somebody wrote me an email about it. Looking up... eh.. can't find. Sorry. >> > > Do you remember if that's a new chip designation, or 3132 (rev 02)? > Just so I know what to keep an eye out for. Yeah, it had a new designation. Something like 3132-2 (don't confuse it with 3132 2 ports or 3132 2 ports SATA 2, yeah a lot of 2s there). -- tejun