From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id BD328C43334 for ; Sat, 23 Jul 2022 10:17:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239487AbiGWKRV (ORCPT ); Sat, 23 Jul 2022 06:17:21 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54920 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239499AbiGWKRK (ORCPT ); Sat, 23 Jul 2022 06:17:10 -0400 Received: from smtpproxy21.qq.com (smtpbg703.qq.com [203.205.195.89]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 3CBB2DA5C8 for ; Sat, 23 Jul 2022 03:07:02 -0700 (PDT) X-QQ-mid: bizesmtp85t1658570658th2mgs73 Received: from eureka.localdomain ( [123.124.208.226]) by bizesmtp.qq.com (ESMTP) with id ; Sat, 23 Jul 2022 18:04:07 +0800 (CST) X-QQ-SSF: 01400000002000B0D000B00A0000020 X-QQ-FEAT: ILHsT53NKPj0HRDuEtI5CbFD7rnuEHAyGC+20aqF8DJXqYDMQ5BN+2SdvaKK5 zCGT1gSzYgjkwhGLcKrh3muLGgmAKIE0BdZ8BLlySm7EAJ4bnrGbaZHVQoHMHLSzcANBti3 +B7UiNHj+XVbpxfxe9rm7UvYiMgBdpEdvIk8E0TH/ZIWFH/0qd4O+HNmV1hBLREisoz5Gl+ nT38oQvOWPKfZe/DcCrHNfSNcCHRirRTd+7YOf75SsT0vc1nQ/vXLS1JAsPvr04dNLEp51p 4h9+uDR0AAaT1DLeNOcOzMty/hsgfyQ4eXiep6N8UQPnwexDrXHN5gUzCjFBdHIB/um3Cyw hC39LlHsUDwA/t4P5GI44+8yyAzAyCThZOA3t8SbsMwyGDWZ5NLpDyodWBK0A== X-QQ-GoodBg: 2 From: Wang You To: bvanassche@acm.org Cc: axboe@kernel.dk, fio@vger.kernel.org, hch@lst.de, jaegeuk@kernel.org, linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, ming.lei@redhat.com, wangxiaohua@uniontech.com, wangyoua@uniontech.com Subject: Re: [PATCH v2 1/2] block: Introduce nr_sched_batch sys interface Date: Sat, 23 Jul 2022 18:04:06 +0800 Message-Id: <20220723100406.437387-1-wangyoua@uniontech.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-QQ-SENDSIZE: 520 Feedback-ID: bizesmtp:uniontech.com:qybgforeign:qybgforeign3 X-QQ-Bgrelay: 1 Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org > Do we need this new parameter? How does the performance of reducing > nr_requests compare to configuring nr_sched_batch? It seems I can't get convincing data in the current test conditions, sorry, please ignore it unless I can produce valid evidence. I will reconsider the effect of this modification on a single disk, from recent testing it seems that the link to the raid controller has a lot of impact. Thanks, Wang.