From: "dingo" Subject: why do scsi disk performance decline in SMP ? Date: Wed, 27 Nov 2002 15:43:14 +0800 Sender: linux-scsi-owner@vger.kernel.org Message-ID: Return-path: Received: from root by main.gmane.org with local (Exim 3.35 #1 (Debian)) id 18GxHA-000313-00 for ; Wed, 27 Nov 2002 09:10:28 +0100 List-Id: linux-scsi@vger.kernel.org To: linux-scsi@vger.kernel.org Hi all, I run three copy processes in redhat7.2 on SMP platform simultaneously, which copy 1GB data from three windows client to linux server by samba, I found that the sector block number of the scsi command that my driver received is very discontiguous. so, it decline my scsi disk performance. but I run the same three copy processes in UP, the sector block number of the scsi command that my driver received is very contiguous. I don't know why? could anybody give me some suggestion? Any help is appreciative.