From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Hellwig Subject: Re: [PATCH v2 11/15] megaraid_sas: Set device queue_depth same as HBA can_queue value in scsi-mq mode Date: Tue, 11 Jul 2017 15:58:28 +0200 Message-ID: <20170711135828.GA12013@lst.de> References: <1499256029-16319-1-git-send-email-shivasharan.srikanteshwara@broadcom.com> <1499256029-16319-12-git-send-email-shivasharan.srikanteshwara@broadcom.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Received: from verein.lst.de ([213.95.11.211]:52863 "EHLO newverein.lst.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755945AbdGKN6a (ORCPT ); Tue, 11 Jul 2017 09:58:30 -0400 Content-Disposition: inline In-Reply-To: <1499256029-16319-12-git-send-email-shivasharan.srikanteshwara@broadcom.com> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: Shivasharan S Cc: linux-scsi@vger.kernel.org, martin.petersen@oracle.com, thenzl@redhat.com, jejb@linux.vnet.ibm.com, kashyap.desai@broadcom.com, sumit.saxena@broadcom.com, hare@suse.com, hch@lst.de On Wed, Jul 05, 2017 at 05:00:25AM -0700, Shivasharan S wrote: > Currently driver sets default queue_depth for VDs at 256 and JBODs based on interface type, > ie., for SAS JBOD QD will be 64, for SATA JBOD QD will be 32. > During performance runs with scsi-mq enabled, we are seeing better results by > setting QD same as HBA queue_depth. Please no scsi-mq specifics. just do this unconditionally.