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=-5.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS 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 DEA7FC636C9 for ; Wed, 21 Jul 2021 12:01:43 +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 AF8DD610F7 for ; Wed, 21 Jul 2021 12:01:43 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org AF8DD610F7 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.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-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=AYLhr2KiwYvH9rS9NvWdg+FQwWHRvHq96pDrn1Ts54k=; b=fi55ifggQdW3nu Lt+Hao8uZhpkyMWncShAPCre3J8/V00RDrwR/sFSLq3lGufOI0gHv+7JzD/jwK82XxztgqjBWAufY z6QBqLCyM2OJ8/XCKmUjrvUJ3kZzRTgdztYRrOWbNukTTT8OzI7xvTsNm+CDpoKeSco/GEPmvT6EA ERthGry6gaZGQ1saSbCAlzw2toHvh2lDedDhz+o+XTjfHcXxKRU1pM0pzdxgx/UfoDjuUidLCux9B f2qmfA+ehkovqcmO2ynB/P3vBBsHPqgajAt+363D7hhys7usGLW5wtjrsRckvWe1/Xn4pGuu2TYll qRrzJfqpjiugvptvsPag==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1m6AtL-00FZ0q-Qe; Wed, 21 Jul 2021 12:00:00 +0000 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1m6AsL-00FYg7-U0 for linux-arm-kernel@lists.infradead.org; Wed, 21 Jul 2021 11:58:59 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1626868735; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=gxJfZWLtNPAs2shHJ9IAWHN7TfwnN9A2aOkk0cTcs2k=; b=bmayNyRi7AT/WRCas2drY555KGrtORsvdmQJVQ70lOFA/FV+U6LyyOeQ9DQ8WNiWtq4LcT K/Qq7LqM32jAgkV6KR8pSRihhZ5rghpBW+56ke26Ph8EZ0X/8zPZ4IeqYipp5GWESBlYr3 X0oo1Qi43XURg0COD/kesEvl4Lqbnko= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-125-GMMTpxDdNDy79OlVI1KIHQ-1; Wed, 21 Jul 2021 07:58:51 -0400 X-MC-Unique: GMMTpxDdNDy79OlVI1KIHQ-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 17430100F79B; Wed, 21 Jul 2021 11:58:50 +0000 (UTC) Received: from T590 (ovpn-13-178.pek2.redhat.com [10.72.13.178]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 4EFFE1B5C2; Wed, 21 Jul 2021 11:58:40 +0000 (UTC) Date: Wed, 21 Jul 2021 19:58:36 +0800 From: Ming Lei To: John Garry Cc: Robin Murphy , iommu@lists.linux-foundation.org, Will Deacon , linux-arm-kernel@lists.infradead.org, linux-nvme@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [bug report] iommu_dma_unmap_sg() is very slow then running IO from remote numa node Message-ID: References: <23e7956b-f3b5-b585-3c18-724165994051@arm.com> <74537f9c-af5f-cd84-60ab-49ca6220310e@huawei.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210721_045858_107541_6160C1E7 X-CRM114-Status: GOOD ( 15.65 ) 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-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Wed, Jul 21, 2021 at 12:07:22PM +0100, John Garry wrote: > 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. Yeah, that might be one improvement, but not checked it since code base is changed. > > > > > [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. The issue I reported is this one. Thanks, Ming _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel