From patchwork Fri Jun 3 12:30:19 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kevin Wolf X-Patchwork-Id: 9153007 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 3C95760751 for ; Fri, 3 Jun 2016 12:36:42 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 2C5621FEBD for ; Fri, 3 Jun 2016 12:36:42 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 210E02654B; Fri, 3 Jun 2016 12:36:42 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 9E92428304 for ; Fri, 3 Jun 2016 12:36:41 +0000 (UTC) Received: from localhost ([::1]:54753 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b8oLA-00073y-KK for patchwork-qemu-devel@patchwork.kernel.org; Fri, 03 Jun 2016 08:36:40 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:53892) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b8oFV-0002sE-Oy for qemu-devel@nongnu.org; Fri, 03 Jun 2016 08:30:50 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1b8oFP-0007oS-I3 for qemu-devel@nongnu.org; Fri, 03 Jun 2016 08:30:49 -0400 Received: from mx1.redhat.com ([209.132.183.28]:34028) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1b8oFI-0007l2-KE; Fri, 03 Jun 2016 08:30:36 -0400 Received: from int-mx09.intmail.prod.int.phx2.redhat.com (int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 3DC28C049D5A; Fri, 3 Jun 2016 12:30:36 +0000 (UTC) Received: from noname.redhat.com (ovpn-116-70.ams2.redhat.com [10.36.116.70]) by int-mx09.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with ESMTP id u53CUS4w001541; Fri, 3 Jun 2016 08:30:34 -0400 From: Kevin Wolf To: qemu-block@nongnu.org Date: Fri, 3 Jun 2016 14:30:19 +0200 Message-Id: <1464957021-3469-4-git-send-email-kwolf@redhat.com> In-Reply-To: <1464957021-3469-1-git-send-email-kwolf@redhat.com> References: <1464957021-3469-1-git-send-email-kwolf@redhat.com> X-Scanned-By: MIMEDefang 2.68 on 10.5.11.22 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.31]); Fri, 03 Jun 2016 12:30:36 +0000 (UTC) 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] [PATCH 3/5] qemu-img bench: Make start offset configurable 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, den@openvz.org, qemu-devel@nongnu.org, mreitz@redhat.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP This patch adds an option the specify the offset of the first request made by qemu-img bench. This allows to benchmark misaligned requests. Signed-off-by: Kevin Wolf Reviewed-by: Denis V. Lunev --- qemu-img-cmds.hx | 4 ++-- qemu-img.c | 23 ++++++++++++++++++++--- qemu-img.texi | 5 +++-- 3 files changed, 25 insertions(+), 7 deletions(-) diff --git a/qemu-img-cmds.hx b/qemu-img-cmds.hx index d651674..b9b521e 100644 --- a/qemu-img-cmds.hx +++ b/qemu-img-cmds.hx @@ -10,9 +10,9 @@ STEXI ETEXI DEF("bench", img_bench, - "bench [-c count] [-d depth] [-f fmt] [-n] [-q] [-s buffer_size] [-t cache] [-w] filename") + "bench [-c count] [-d depth] [-f fmt] [-n] [-o offset] [-q] [-s buffer_size] [-t cache] [-w] filename") STEXI -@item bench [-c @var{count}] [-d @var{depth}] [-f @var{fmt}] [-n] [-q] [-s @var{buffer_size}] [-t @var{cache}] [-w] @var{filename} +@item bench [-c @var{count}] [-d @var{depth}] [-f @var{fmt}] [-n] [-o @var{offset}] [-q] [-s @var{buffer_size}] [-t @var{cache}] [-w] @var{filename} ETEXI DEF("check", img_check, diff --git a/qemu-img.c b/qemu-img.c index 142efb1..fcac8b8 100644 --- a/qemu-img.c +++ b/qemu-img.c @@ -3514,6 +3514,7 @@ static int img_bench(int argc, char **argv) bool is_write = false; int count = 75000; int depth = 64; + int64_t offset = 0; size_t bufsize = 4096; int64_t image_size; BlockBackend *blk = NULL; @@ -3529,7 +3530,7 @@ static int img_bench(int argc, char **argv) {"image-opts", no_argument, 0, OPTION_IMAGE_OPTS}, {0, 0, 0, 0} }; - c = getopt_long(argc, argv, "hc:d:f:nqs:t:w", long_options, NULL); + c = getopt_long(argc, argv, "hc:d:f:no:qs:t:w", long_options, NULL); if (c == -1) { break; } @@ -3567,6 +3568,19 @@ static int img_bench(int argc, char **argv) case 'n': flags |= BDRV_O_NATIVE_AIO; break; + case 'o': + { + char *end; + errno = 0; + offset = qemu_strtosz_suffix(optarg, &end, + QEMU_STRTOSZ_DEFSUFFIX_B); + if (offset < 0|| *end) { + error_report("Invalid offset specified"); + return 1; + } + break; + } + break; case 'q': quiet = true; break; @@ -3625,10 +3639,13 @@ static int img_bench(int argc, char **argv) .bufsize = bufsize, .nrreq = depth, .n = count, + .offset = offset, .write = is_write, }; - printf("Sending %d %s requests, %d bytes each, %d in parallel\n", - data.n, data.write ? "write" : "read", data.bufsize, data.nrreq); + printf("Sending %d %s requests, %d bytes each, %d in parallel " + "(starting at offset %" PRId64 ")\n", + data.n, data.write ? "write" : "read", data.bufsize, data.nrreq, + data.offset); data.buf = blk_blockalign(blk, data.nrreq * data.bufsize); memset(data.buf, 0, data.nrreq * data.bufsize); diff --git a/qemu-img.texi b/qemu-img.texi index 34e94db..c37380e 100644 --- a/qemu-img.texi +++ b/qemu-img.texi @@ -131,13 +131,14 @@ Skip the creation of the target volume Command description: @table @option -@item bench [-c @var{count}] [-d @var{depth}] [-f @var{fmt}] [-n] [-q] [-s @var{buffer_size}] [-t @var{cache}] [-w] @var{filename} +@item bench [-c @var{count}] [-d @var{depth}] [-f @var{fmt}] [-n] [-o @var{offset}] [-q] [-s @var{buffer_size}] [-t @var{cache}] [-w] @var{filename} Run a simple sequential I/O benchmark on the specified image. If @code{-w} is specified, a write test is performed, otherwise a read test is performed. A total number of @var{count} I/O requests is performed, each @var{buffer_size} -bytes in size, and with @var{depth} requests in parallel. +bytes in size, and with @var{depth} requests in parallel. The first request +starts at the position given by @var{offset}. If @code{-n} is specified, the native AIO backend is used if possible. On Linux, this option only works if @code{-t none} or @code{-t directsync} is