From patchwork Mon Mar 23 21:06:35 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: KY Srinivasan X-Patchwork-Id: 6075331 Return-Path: X-Original-To: patchwork-linux-scsi@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id A8F8A9F2A9 for ; Mon, 23 Mar 2015 19:51:41 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id EDE4820212 for ; Mon, 23 Mar 2015 19:51:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 21A242020F for ; Mon, 23 Mar 2015 19:51:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753323AbbCWTuB (ORCPT ); Mon, 23 Mar 2015 15:50:01 -0400 Received: from p3plsmtps2ded01.prod.phx3.secureserver.net ([208.109.80.58]:53589 "EHLO p3plsmtps2ded01.prod.phx3.secureserver.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752855AbbCWTt7 (ORCPT ); Mon, 23 Mar 2015 15:49:59 -0400 Received: from linuxonhyperv.com ([72.167.245.219]) by p3plsmtps2ded01.prod.phx3.secureserver.net with : DED : id 77pz1q01G4kklxU017pzt4; Mon, 23 Mar 2015 12:49:59 -0700 x-originating-ip: 72.167.245.219 Received: by linuxonhyperv.com (Postfix, from userid 507) id C59B9190850; Mon, 23 Mar 2015 14:06:44 -0700 (PDT) From: "K. Y. Srinivasan" To: gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, devel@linuxdriverproject.org, ohering@suse.com, jbottomley@parallels.com, hch@infradead.org, linux-scsi@vger.kernel.org, apw@canonical.com, vkuznets@redhat.com, jasowang@redhat.com Cc: "K. Y. Srinivasan" Subject: [PATCH RESEND 1/7] scsi: storvsc: Increase the ring buffer size Date: Mon, 23 Mar 2015 14:06:35 -0700 Message-Id: <1427144801-11920-1-git-send-email-kys@microsoft.com> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1427144760-11875-1-git-send-email-kys@microsoft.com> References: <1427144760-11875-1-git-send-email-kys@microsoft.com> Sender: linux-scsi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-scsi@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=ham version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Increase the default ring buffer size as this can significantly improve performance especially on high latency storage back-ends. Signed-off-by: K. Y. Srinivasan Reviewed-by: Long Li --- drivers/scsi/storvsc_drv.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/drivers/scsi/storvsc_drv.c b/drivers/scsi/storvsc_drv.c index efc6e44..27fe850 100644 --- a/drivers/scsi/storvsc_drv.c +++ b/drivers/scsi/storvsc_drv.c @@ -308,7 +308,7 @@ enum storvsc_request_type { * This is the end of Protocol specific defines. */ -static int storvsc_ringbuffer_size = (20 * PAGE_SIZE); +static int storvsc_ringbuffer_size = (256 * PAGE_SIZE); module_param(storvsc_ringbuffer_size, int, S_IRUGO); MODULE_PARM_DESC(storvsc_ringbuffer_size, "Ring buffer size (bytes)");