From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756009AbaCNUlZ (ORCPT ); Fri, 14 Mar 2014 16:41:25 -0400 Received: from userp1040.oracle.com ([156.151.31.81]:36804 "EHLO userp1040.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753570AbaCNUlY (ORCPT ); Fri, 14 Mar 2014 16:41:24 -0400 To: "Reddy\, Sreekanth" Cc: , , , , , , Subject: Re: [PATCH 08/11][SCSI]mpt2sas: Added Reply Descriptor Post Queue (RDPQ) Array support From: "Martin K. Petersen" Organization: Oracle Corporation References: <20140314154256.GA8041@lsi.com> Date: Fri, 14 Mar 2014 16:41:00 -0400 In-Reply-To: <20140314154256.GA8041@lsi.com> (Sreekanth Reddy's message of "Fri, 14 Mar 2014 21:12:56 +0530") Message-ID: User-Agent: Gnus/5.130005 (Ma Gnus v0.5) Emacs/24.2 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain X-Source-IP: ucsinet22.oracle.com [156.151.31.94] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org >>>>> "Sreekanth" == Reddy, Sreekanth writes: Sreekanth, Sreekanth> The size of this contiguous block of memory pool is directly Sreekanth> proportional to number of MSI-X vectors and the HBA queue Sreekanth> depth. For example higher MSIX vectors requires larger Sreekanth> contiguous block of memory pool. Please also consider these patches that fix MSI-X issues on large systems: http://marc.info/?l=linux-scsi&m=138879464506586 http://marc.info/?l=linux-scsi&m=138879465206588 -- Martin K. Petersen Oracle Linux Engineering