From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Martin K. Petersen" Subject: Re: [PATCH 09/15] megaraid_sas: Dual Queue depth support Date: Tue, 26 Jan 2016 21:02:03 -0500 Message-ID: References: <1450445228-26571-1-git-send-email-Sumit.Saxena@avagotech.com> <1450445228-26571-10-git-send-email-Sumit.Saxena@avagotech.com> <569E3B51.9070103@redhat.com> <54361777a29aaf5a2c81a5456da0de50@mail.gmail.com> <569F91D3.6020309@redhat.com> <569F96A5.3080001@redhat.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: Received: from aserp1040.oracle.com ([141.146.126.69]:48787 "EHLO aserp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751333AbcA0CCn (ORCPT ); Tue, 26 Jan 2016 21:02:43 -0500 In-Reply-To: <569F96A5.3080001@redhat.com> (Tomas Henzl's message of "Wed, 20 Jan 2016 15:16:05 +0100") Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: Tomas Henzl Cc: Sumit Saxena , jbottomley@parallels.com, hch@infradead.org, martin.petersen@oracle.com, linux-scsi@vger.kernel.org, Kashyap Desai >>>>> "Tomas" == Tomas Henzl writes: >> Yes this is already covered internally, there would be perf penalty >> with VDs in configuration but this feature will be turned on based on >> firmware settings and that specific firmware deployment has primary >> purpose of increasing JBOD performance. This focuses on firmware >> deployment with less VDs(or no) and more JBODs in configuration. Tomas> OK, so it is switched off by default in the firmware and the user Tomas> and an educated user can switch it on ? if so, it's fine for me. Sumit? -- Martin K. Petersen Oracle Linux Engineering