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 X-Spam-Level: X-Spam-Status: No, score=-6.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, NICE_REPLY_A,SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3DE6EC07E9B for ; Wed, 21 Jul 2021 11:09:01 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id F24AC608FC for ; Wed, 21 Jul 2021 11:09:00 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org F24AC608FC Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:Content-Type: Content-Transfer-Encoding:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:Date:Message-ID:From: References:CC:To:Subject:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=Rj0CW7CXszD6f0okw5dL1ekCxbCJljDu3t9tbRCkY5k=; b=NyyZRaGZrXhv4WmTH9APVF2uX8 NrTsYTTQ7F3HRlZD5KO3QnXHZhq9/rFnFz68UunXVj04t+GcX5rVr+FOX3hF6NxEu4SdQYih6SJxw fvMi5EjwmeD4lWimJfljogyb/f/McDf+Glc0/dquyA2bKZnNbkwLXlFwLm7KcZdTvbDGO2nV4oP64 WS97jXXsLHqjVWq7779iOcJJ2Y6TNQfShC3wZspAYeJpNWUtTh9yCf8tsf0KUPpJvt0D3JFk04Iev ltUHJImSdgPC4MrbvBpro93dWxSn07mActgI+e6Rs9X6gQIRVgyCAcqFmSZBnPNb8OGLDtuHGPGM4 Te7QhJIw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1m6A4e-00FNpT-EZ; Wed, 21 Jul 2021 11:07:36 +0000 Received: from frasgout.his.huawei.com ([185.176.79.56]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1m6A4Y-00FNoU-VT; Wed, 21 Jul 2021 11:07:33 +0000 Received: from fraeml744-chm.china.huawei.com (unknown [172.18.147.201]) by frasgout.his.huawei.com (SkyGuard) with ESMTP id 4GVC8m0yxyz6D8Wf; Wed, 21 Jul 2021 18:52:40 +0800 (CST) Received: from lhreml724-chm.china.huawei.com (10.201.108.75) by fraeml744-chm.china.huawei.com (10.206.15.225) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Wed, 21 Jul 2021 13:07:26 +0200 Received: from [10.47.85.43] (10.47.85.43) by lhreml724-chm.china.huawei.com (10.201.108.75) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2176.2; Wed, 21 Jul 2021 12:07:25 +0100 Subject: Re: [bug report] iommu_dma_unmap_sg() is very slow then running IO from remote numa node To: Ming Lei CC: Robin Murphy , , Will Deacon , , , References: <23e7956b-f3b5-b585-3c18-724165994051@arm.com> <74537f9c-af5f-cd84-60ab-49ca6220310e@huawei.com> From: John Garry Message-ID: Date: Wed, 21 Jul 2021 12:07:22 +0100 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.12.1 MIME-Version: 1.0 In-Reply-To: Content-Language: en-US X-Originating-IP: [10.47.85.43] X-ClientProxiedBy: lhreml734-chm.china.huawei.com (10.201.108.85) To lhreml724-chm.china.huawei.com (10.201.108.75) X-CFilter-Loop: Reflected X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210721_040731_214774_07D41179 X-CRM114-Status: UNSURE ( 9.84 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="us-ascii"; Format="flowed" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On 21/07/2021 10:59, Ming Lei wrote: >> I have now removed that from the tree, so please re-pull. > Now the kernel can be built successfully, but not see obvious improvement > on the reported issue: > > [root@ampere-mtjade-04 ~]# uname -a > Linux ampere-mtjade-04.khw4.lab.eng.bos.redhat.com 5.14.0-rc2_smmu_fix+ #2 SMP Wed Jul 21 05:49:03 EDT 2021 aarch64 aarch64 aarch64 GNU/Linux > > [root@ampere-mtjade-04 ~]# taskset -c 0 ~/git/tools/test/nvme/io_uring 10 1 /dev/nvme1n1 4k > + fio --bs=4k --ioengine=io_uring --fixedbufs --registerfiles --hipri --iodepth=64 --iodepth_batch_submit=16 --iodepth_batch_complete_min=16 --filename=/dev/nvme1n1 --direct=1 --runtime=10 --numjobs=1 --rw=randread --name=test --group_reporting > test: (g=0): rw=randread, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=io_uring, iodepth=64 > fio-3.27 > Starting 1 process > Jobs: 1 (f=1): [r(1)][100.0%][r=1503MiB/s][r=385k IOPS][eta 00m:00s] > test: (groupid=0, jobs=1): err= 0: pid=3143: Wed Jul 21 05:58:14 2021 > read: IOPS=384k, BW=1501MiB/s (1573MB/s)(14.7GiB/10001msec) I am not sure what baseline you used previously, but you were getting 327K then, so at least this would be an improvement. > > [root@ampere-mtjade-04 ~]# taskset -c 80 ~/git/tools/test/nvme/io_uring 10 1 /dev/nvme1n1 4k > + fio --bs=4k --ioengine=io_uring --fixedbufs --registerfiles --hipri --iodepth=64 --iodepth_batch_submit=16 --iodepth_batch_complete_min=16 --filename=/dev/nvme1n1 --direct=1 --runtime=10 --numjobs=1 --rw=randread --name=test --group_reporting > test: (g=0): rw=randread, bs=(R) 4096B-4096B, (W) 4096B-4096B, (T) 4096B-4096B, ioengine=io_uring, iodepth=64 > fio-3.27 > Starting 1 process > Jobs: 1 (f=1): [r(1)][100.0%][r=138MiB/s][r=35.4k IOPS][eta 00m:00s] > test: (groupid=0, jobs=1): err= 0: pid=3063: Wed Jul 21 05:55:31 2021 > read: IOPS=35.4k, BW=138MiB/s (145MB/s)(1383MiB/10001msec) I can try similar on our arm64 board when I get a chance. Thanks, John _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel