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[2620:137:e000::1:20]) by mx.google.com with ESMTP id d12-20020a170902cecc00b0016180dd8c33si4444222plg.164.2022.06.16.14.37.52; Thu, 16 Jun 2022 14:38:06 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@deltatee.com header.s=20200525 header.b=ryNEp85f; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=deltatee.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1378660AbiFPVfy (ORCPT + 99 others); Thu, 16 Jun 2022 17:35:54 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55400 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230194AbiFPVfx (ORCPT ); Thu, 16 Jun 2022 17:35:53 -0400 Received: from ale.deltatee.com (ale.deltatee.com [204.191.154.188]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 9EDE5612B5; Thu, 16 Jun 2022 14:35:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=deltatee.com; s=20200525; h=Subject:In-Reply-To:From:References:Cc:To: MIME-Version:Date:Message-ID:content-disposition; bh=p55bws0dU16nNumHDUzsNgqJ+T30XftRBXPNFeHgwLo=; b=ryNEp85fiQFsYaODlvZR2E9ARu YA6O8YQVwYU+5+oG8Ijf8t6zBFJWVyTOm3wR5gnQZ3rMXG1sYdw2sN1grVRTP3MmZ0i7S5B1zm8on vpeXn1k36lzlInB2NUGmJJ19OrpSM6LQmv2TTK1gTaVBDyZ968gpW2MvT534wS3OH/Ylyg05okuJW j5fD0TYn5t10Kr2cuujG0epmkOaGeez5MDzmWX2awdbWRz40MGjwpQplFuzn1i99ENimz53UjFuA8 09/ag/JZMRqDF6U+O0dMtuCOjjTwA6LNidJXJGmjH+kbaecZL6prqBDVmWRKSgRhKC42W2c7HWuLw sqBu6/jA==; Received: from s0106a84e3fe8c3f3.cg.shawcable.net ([24.64.144.200] helo=[192.168.0.10]) by ale.deltatee.com with esmtpsa (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 (Exim 4.94.2) (envelope-from ) id 1o1x9b-009530-77; Thu, 16 Jun 2022 15:35:51 -0600 Message-ID: <68536888-54fc-adde-a69d-321a5004e566@deltatee.com> Date: Thu, 16 Jun 2022 15:35:47 -0600 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.10.0 Content-Language: en-CA To: "Finlayson, James M CIV (USA)" , "linux-kernel@vger.kernel.org" , "linux-raid@vger.kernel.org" , Song Liu Cc: Christoph Hellwig , Guoqing Jiang , Stephen Bates , Martin Oliveira , David Sloan References: <20220616191945.23935-1-logang@deltatee.com> <20220616191945.23935-16-logang@deltatee.com> <5EAED86C53DED2479E3E145969315A2389D4672D@UMECHPA68.easf.csd.disa.mil> From: Logan Gunthorpe In-Reply-To: <5EAED86C53DED2479E3E145969315A2389D4672D@UMECHPA68.easf.csd.disa.mil> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-SA-Exim-Connect-IP: 24.64.144.200 X-SA-Exim-Rcpt-To: james.m.finlayson4.civ@mail.mil, linux-kernel@vger.kernel.org, linux-raid@vger.kernel.org, song@kernel.org, hch@infradead.org, guoqing.jiang@linux.dev, sbates@raithlin.com, Martin.Oliveira@eideticom.com, David.Sloan@eideticom.com X-SA-Exim-Mail-From: logang@deltatee.com X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net X-Spam-Level: X-Spam-Status: No, score=-4.7 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,NICE_REPLY_A,SPF_HELO_PASS, SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 Subject: Re: [Non-DoD Source] [PATCH v3 15/15] md/raid5: Increase restriction on max segments per request X-SA-Exim-Version: 4.2.1 (built Sat, 13 Feb 2021 17:57:42 +0000) X-SA-Exim-Scanned: Yes (on ale.deltatee.com) Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2022-06-16 15:32, Finlayson, James M CIV (USA) wrote: > Innocent question from position of ignorance....I see these last 15 check-ins all as performance improvements. I tend to push hard on mdraid performance, but have RAID6 needs....are these some optimizations available for RAID6 and are they in process or did I just ask a silly question? Yes, the optimizations in this series should improve raid6 performance in the exact same way. Raid6 and Raid5 share the same implementation. They are both (confusingly) in the raid5.c file. Logan