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=-7.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=ham 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 3C903C04AB5 for ; Mon, 3 Jun 2019 15:05:57 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 147C225AD5 for ; Mon, 3 Jun 2019 15:05:57 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 147C225AD5 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([127.0.0.1]:36311 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hXoX6-00020M-5p for qemu-devel@archiver.kernel.org; Mon, 03 Jun 2019 11:05:56 -0400 Received: from eggs.gnu.org ([209.51.188.92]:39562) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1hXoUY-0000O7-KS for qemu-devel@nongnu.org; Mon, 03 Jun 2019 11:03:20 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1hXoUX-0006xq-6K for qemu-devel@nongnu.org; Mon, 03 Jun 2019 11:03:18 -0400 Received: from mx1.redhat.com ([209.132.183.28]:35658) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1hXoUU-0006k5-2Y; Mon, 03 Jun 2019 11:03:14 -0400 Received: from smtp.corp.redhat.com (int-mx06.intmail.prod.int.phx2.redhat.com [10.5.11.16]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 273D5C051684; Mon, 3 Jun 2019 15:03:09 +0000 (UTC) Received: from linux.fritz.box.com (ovpn-116-129.ams2.redhat.com [10.36.116.129]) by smtp.corp.redhat.com (Postfix) with ESMTP id 6587D61B6A; Mon, 3 Jun 2019 15:03:05 +0000 (UTC) From: Kevin Wolf To: qemu-block@nongnu.org Date: Mon, 3 Jun 2019 17:02:09 +0200 Message-Id: <20190603150233.6614-5-kwolf@redhat.com> In-Reply-To: <20190603150233.6614-1-kwolf@redhat.com> References: <20190603150233.6614-1-kwolf@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.16 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.31]); Mon, 03 Jun 2019 15:03:13 +0000 (UTC) Content-Transfer-Encoding: quoted-printable X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL 04/28] tests/perf: Test lseek influence on qcow2 block-status X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kwolf@redhat.com, qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Vladimir Sementsov-Ogievskiy Block layer may recursively check block_status in file child of qcow2, if qcow2 driver returned DATA. There are several test cases to check influence of lseek on block_status performance. To see real difference run on tmpfs. Tests originally created by Kevin, I just refactored and put them together into one executable file with simple output. Signed-off-by: Vladimir Sementsov-Ogievskiy Signed-off-by: Kevin Wolf --- tests/perf/block/qcow2/convert-blockstatus | 71 ++++++++++++++++++++++ 1 file changed, 71 insertions(+) create mode 100755 tests/perf/block/qcow2/convert-blockstatus diff --git a/tests/perf/block/qcow2/convert-blockstatus b/tests/perf/bloc= k/qcow2/convert-blockstatus new file mode 100755 index 0000000000..a1a3c1ef43 --- /dev/null +++ b/tests/perf/block/qcow2/convert-blockstatus @@ -0,0 +1,71 @@ +#!/bin/bash +# +# Test lseek influence on qcow2 block-status +# +# Block layer may recursively check block_status in file child of qcow2,= if +# qcow2 driver returned DATA. There are several test cases to check infl= uence +# of lseek on block_status performance. To see real difference run on tm= pfs. +# +# Copyright (c) 2019 Virtuozzo International GmbH. All rights reserved. +# +# Tests originally written by Kevin Wolf +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . +# + +if [ "$#" -lt 1 ]; then + echo "Usage: $0 SOURCE_FILE" + exit 1 +fi + +ROOT_DIR=3D"$( cd "$( dirname "${BASH_SOURCE[0]}" )/../../../.." >/dev/n= ull 2>&1 && pwd )" +QEMU_IMG=3D"$ROOT_DIR/qemu-img" +QEMU_IO=3D"$ROOT_DIR/qemu-io" + +size=3D1G +src=3D"$1" + +# test-case plain + +( +$QEMU_IMG create -f qcow2 "$src" $size +for i in $(seq 16384 -1 0); do + echo "write $((i * 65536)) 64k" +done | $QEMU_IO "$src" +) > /dev/null + +echo -n "plain: " +/usr/bin/time -f %e $QEMU_IMG convert -n "$src" null-co:// + +# test-case forward + +( +$QEMU_IMG create -f qcow2 "$src" $size +for i in $(seq 0 2 16384); do + echo "write $((i * 65536)) 64k" +done | $QEMU_IO "$src" +for i in $(seq 1 2 16384); do + echo "write $((i * 65536)) 64k" +done | $QEMU_IO "$src" +) > /dev/null + +echo -n "forward: " +/usr/bin/time -f %e $QEMU_IMG convert -n "$src" null-co:// + +# test-case prealloc + +$QEMU_IMG create -f qcow2 -o preallocation=3Dmetadata "$src" $size > /de= v/null + +echo -n "prealloc: " +/usr/bin/time -f %e $QEMU_IMG convert -n "$src" null-co:// --=20 2.20.1