From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Garzik Subject: Re: multiple irqs per card on the sata_sil24 Date: Tue, 26 Sep 2006 20:46:04 -0400 Message-ID: <4519C9CC.6060701@garzik.org> References: Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from srv5.dvmed.net ([207.36.208.214]:27038 "EHLO mail.dvmed.net") by vger.kernel.org with ESMTP id S932086AbWI0AqI (ORCPT ); Tue, 26 Sep 2006 20:46:08 -0400 In-Reply-To: Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Trent George Cc: Tejun Heo , linux-ide@vger.kernel.org Trent George wrote: > While reading the specs, I noticed that the pci-x cards support splitting each port to a unique irq pin. > If you have 6 cards with 4 ports, can you spread the load over 24 irqs ? > I dont know if the motherboard can support this, or the driver could be modified to do this. > It would be nice when there is a lot of of disk traffic on lots of drives.... adding port multiplier drives to each channel. > I am trying to build a VERY large duplication system using LOTS of bandwidth. the irq can really put stress on the system. > > the final system would be 100+ drives all going over 22mb/s. > It should give a nice supermicro board with 3 buses a real workout. You're still going to max out PCI bus bandwidth first. Best solution is PCI Express with MSI... Jeff