Received: by 2002:ac0:da4c:0:0:0:0:0 with SMTP id a12csp1366984imi; Sat, 23 Jul 2022 03:50:24 -0700 (PDT) X-Google-Smtp-Source: AGRyM1u3OptICg3sfeFdXOVIVEWt7bT7m4h0DoZNfEIrlDM1AiUjbjS5EcIf2I6ysjWOd7i7miCn X-Received: by 2002:a05:6402:27cf:b0:43a:de0b:9a82 with SMTP id c15-20020a05640227cf00b0043ade0b9a82mr3948547ede.427.1658573424388; Sat, 23 Jul 2022 03:50:24 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1658573424; cv=none; d=google.com; s=arc-20160816; b=Qd/klFIsZcwuYyxQkkHjNmpRRLHOyabhOnf0pp9ixZ654lQkeIwaZ5rWPuHdGHmXqN LqpDQZnGKsAcXxGGqT6rto1wCsUw6ZSittAEgufbshMjWdPBO8KC72IZGUkD622aQmCy 8VLtuxcixqZ3rR5cVtto8p8Xcoa7Pl6rqyqNIippinAfksmUA9RIUzjvIXxE5EFuzpUu zOyI4r5Hrg5nP/DjbmniklD3IE4FdlhazSHRIbuwDP1Izqt7nV3r3WTdz5TiTdDaxG3w ugbtC1gPR09EOHLJV4inWd0pdrcA68bYrD/6RK6g+Fck6v9NTRcpjF4Yy5Dq09H3M2nC 2Kow== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:feedback-id:content-transfer-encoding :mime-version:references:in-reply-to:message-id:date:subject:cc:to :from; bh=7dzYhm9TrlKiQfRv6o6wqwLgPFoBaZWzMV98inMaiRE=; b=KLg9SQXRGW9k7itjcISIH7MrrczmwzeSfRr/G+M+6kpoMT4+5rmY1kcsS7GRAAG/b8 gAEhU5OWO4P2LAloVKFufn89snAGbvrZQei+QL+wLlk7hkMhEdRH2MBX54q8jILd9l1d /ykVsZ1X5ob0SPLzo7SFkQ0nlZ4GY+n1RxtbFIIg6QvmRLdoR6xvKFnQD4fnz0oH18Qv oSy78CAUV7RSn/uVyAv/+OYrCr9hX6rI7umXWv6YDpyJ0kkoj3NMC/uusnaRYNwajMzm KfjcR3ZoGWxByzfs0+UMLSPZnftQoMM17876WsVKIKJwG+Ck2U+MnYJvJQDTyc01dp+m t0lA== ARC-Authentication-Results: i=1; mx.google.com; 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 Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id q16-20020a056402249000b004356a07ed0dsi5786314eda.286.2022.07.23.03.49.58; Sat, 23 Jul 2022 03:50:24 -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; 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 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239585AbiGWKPp (ORCPT + 99 others); Sat, 23 Jul 2022 06:15:45 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54590 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239395AbiGWKPV (ORCPT ); Sat, 23 Jul 2022 06:15:21 -0400 Received: from smtpbgjp3.qq.com (smtpbgjp3.qq.com [54.92.39.34]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 259B36A9CC for ; Sat, 23 Jul 2022 03:05:31 -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 X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_NONE, SPF_HELO_PASS,SPF_PASS autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@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.