From mboxrd@z Thu Jan 1 00:00:00 1970 From: Tobias Reinhard Subject: Problem with concurrent SATA-Writes Date: Wed, 01 Jun 2005 19:13:06 +0200 Message-ID: <429DECA2.6020609@robotech.de> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-15; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from moutvdom.kundenserver.de ([212.227.126.249]:2030 "EHLO moutvdomng.kundenserver.de") by vger.kernel.org with ESMTP id S261473AbVFARNL (ORCPT ); Wed, 1 Jun 2005 13:13:11 -0400 Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: jgarzik@pobox.com, linux-ide@vger.kernel.org Hello Jeff, hello to the linux-ide-list! I already posted this to the lkml, but unfortunately I got no usefull answer. I think the problem is related to the SIL-Driver so maybe you are the right person to contact - or someone at the linux-ide-list... If you need any other informations or logs please tell me. I really want to use these discs. Tobias Original Msg: -------- I have a problem with two SATA-Discs. I have an onboard SIL3114 with four SATA-Ports an onboard NVIDIA with two SATA-Ports - both controllers are disable via BIOS (and are not detected by Linux)(only for this test of course - normally I have other HDD on this ports). The only controller that is found is the add-on controller in a PCI-Slot (SIL3112). And that is the one I have trouble with. If I read or write (via dd) from the first one -> no problems. Same when read or write from the second or when I read (only read!) from both at the same time. Data-Transfer-Rate is around 45MB/s for each HDD. The problem occures when I try to write on both discs at the same time. For example I write /dev/zero to the first one and then start to write /dev/zero to the second one. The System-Load goes up to 4 with nearly 100% io-wait and nearly no write-access to the drives. Any hints? - no errormessages in syslog - happens with Kernel 2.6.11.7 and with 2.6.12-rc5 - HDDs are Samsung Spinpoint 200GB - (I use the SCSI-SATA-Drivers)