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 lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 7817AC433EF for ; Tue, 26 Jul 2022 13:35:24 +0000 (UTC) Received: from localhost ([::1]:51562 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1oGKiZ-0003Wn-FJ for qemu-devel@archiver.kernel.org; Tue, 26 Jul 2022 09:35:23 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:34160) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oGJbj-00050M-9w for qemu-devel@nongnu.org; Tue, 26 Jul 2022 08:24:15 -0400 Received: from out0.migadu.com ([94.23.1.103]:55658) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1oGJbg-0008Jt-Pk for qemu-devel@nongnu.org; Tue, 26 Jul 2022 08:24:14 -0400 Message-ID: <4f2c71a4-609e-6880-04d0-2eb127c55023@linux.dev> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1658838243; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=RyjAJBrvN+/oTicKai/HbICAmWdsr5+c6kqiYEOCxc4=; b=oG+u2ifJTVH5gWSxhZcJ4W75T4wJ6Jx6fKq9twx0Rc7trmzTty6UIbjFn77BL5XZapebEk MoNWkziXbbHyBC7AJFlKwMqxMACEqDQJUz2PurJ5Savn1rw4yELZ8y2PMpdPM38G6yXEma iAFUM6QDptR0Ph1tbrG2oG0OiPHkGCk= Date: Tue, 26 Jul 2022 20:23:56 +0800 MIME-Version: 1.0 Content-Language: en-US To: Stefan Hajnoczi , qemu-devel X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. From: Hao Xu Subject: Question about performance comparison between virtio-fs and virtio-blk Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Migadu-Flow: FLOW_OUT X-Migadu-Auth-User: linux.dev Received-SPF: pass client-ip=94.23.1.103; envelope-from=hao.xu@linux.dev; helo=out0.migadu.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_LOW=-0.7, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-Mailman-Approved-At: Tue, 26 Jul 2022 09:26:54 -0400 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Hi Stefan, I watched your presentation about virtiofs in 2020, https://www.youtube.com/watch?v=EIVOzTsGMMI&t=232s which is really helpful to me, but I have a question about the graph at 3:53, could you give me more info about the test, like what tool you use for the test, if it's fio, what is the parameters. I used fio to do randread test in a qemu box, but turns out the iops of virtio-blk and virtio-fs are similar. Thanks, Hao