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.sourceforge.net (lists.sourceforge.net [216.105.38.7]) (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 79652D116F1 for ; Mon, 1 Dec 2025 20:46:35 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.sourceforge.net; s=beta; h=Content-Transfer-Encoding:Content-Type:Cc: Reply-To:From:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:Subject:MIME-Version:Message-ID:Date:To:Sender: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=PT6PcAKsOcJ5+9VDDjFslu7yCPrlZiHO9BBlgbbcpys=; b=dN0XKLvTB2ulJqTtzgzmHaWo7U qHwmErgxIZ7iwR5FkFHJ8PJjZXvKBzqT75iy1wMw3mVgiYz97l7aIEwowwsBvRTuhDcYhytVZYlz1 cmAc+XJdzuCh+mTUc7RIvSkd095G2PZbbnGOypioKp/WSjON7/y8D1wsrf6/lNC682A8=; Received: from [127.0.0.1] (helo=sfs-ml-3.v29.lw.sourceforge.com) by sfs-ml-3.v29.lw.sourceforge.com with esmtp (Exim 4.95) (envelope-from ) id 1vQAn3-0007FI-KR; Mon, 01 Dec 2025 20:46:33 +0000 Received: from [172.30.29.66] (helo=mx.sourceforge.net) by sfs-ml-3.v29.lw.sourceforge.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1vQAn2-0007FC-DW for linux-f2fs-devel@lists.sourceforge.net; Mon, 01 Dec 2025 20:46:32 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sourceforge.net; s=x; h=Content-Transfer-Encoding:MIME-Version:Message-ID: Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:In-Reply-To:References:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=kGjFXLFF7qsjj+/o4IRgk9MdGuHeBhaCcJx3DuowKvg=; b=PqOcT+/bqsoNr0YgkFXeAlxb4n c51jxpQ9ye9+w5jfqMFQZHXEiyB6aRa8UPZJSbES8LVW9aFDhTGk9MtdkAGo0GdinZLlXIEpGsIaq Ya+TGxSOvx9l3XH0RZPD2IM7QRQeqbsVu9kJutnRL5/uJQFGaAJCXUEACpBl+9kl8j/4=; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sf.net; s=x ; h=Content-Transfer-Encoding:MIME-Version:Message-ID:Date:Subject:Cc:To:From :Sender:Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To: References:List-Id:List-Help:List-Unsubscribe:List-Subscribe:List-Post: List-Owner:List-Archive; bh=kGjFXLFF7qsjj+/o4IRgk9MdGuHeBhaCcJx3DuowKvg=; b=B SUi5pvdFg6yj8WwlTuo1PhX9iMQ/CJl6sJZbssJ1lSJMStaSSnCdrRnS57uLQiQqdvSet0+oxuol7 9zpvnotC8rU6L8+xXq6T7lCiJ4XMVsqXN9ZX8c0e3C8NNcjamhReHNNunxiqxBSD96hOB96DxhzI4 jla3DdBRM1PpObXU=; Received: from sea.source.kernel.org ([172.234.252.31]) by sfi-mx-2.v28.lw.sourceforge.com with esmtps (TLS1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.95) id 1vQAn2-0000to-0o for linux-f2fs-devel@lists.sourceforge.net; Mon, 01 Dec 2025 20:46:32 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 978FD4198C for ; Mon, 1 Dec 2025 20:46:26 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6830AC4CEF1; Mon, 1 Dec 2025 20:46:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1764621986; bh=8SuTCQaVYU7lsbJLteS0RbKYrf+Dg3AwACzqWj88Xks=; h=From:To:Cc:Subject:Date:From; b=Z1EaEIP+0/IoQdQYe38xd/fhZuCz3ElmfZYQ5AhwfFzDVxPK/JkOfhizI9RSfpWsU f3iMCenCx1NcDv2JHdbuNtS0m8aaq+BPgA5SdRRtPKF5S/Ztv1vR2OJTETMwnJPhmo 41+/oqTrir+XbUNFyZAIYyYyOxcyZSA9T+DentYvhV2uktAel4BJvwHSE4DXOxhLpM AoGBBvDmXODysL5+Jn/OixXcrRGTl4s4EioqUMvV/jTMqv4fvb+mWh1LU5qg+lFqsq qTCV5NX0OnSVdPt8Yv26P1/9Va3x5B+wJBkZUnQRGhCVMaoPij61C3r98KCvf3Qt3T FhfOMuuDTMHsA== To: linux-f2fs-devel@lists.sourceforge.net Date: Mon, 1 Dec 2025 20:46:18 +0000 Message-ID: <20251201204620.905318-1-jaegeuk@kernel.org> X-Mailer: git-send-email 2.52.0.107.ga0afd4fd5b-goog MIME-Version: 1.0 X-Headers-End: 1vQAn2-0000to-0o Subject: [f2fs-dev] [PATCH 1/3] f2fs_io: measure the start time explicitly X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , From: Jaegeuk Kim via Linux-f2fs-devel Reply-To: Jaegeuk Kim Cc: Jaegeuk Kim Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net Let's measure the start time more precisely. Signed-off-by: Jaegeuk Kim --- tools/f2fs_io/f2fs_io.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/tools/f2fs_io/f2fs_io.c b/tools/f2fs_io/f2fs_io.c index 326b3bd033af..bc2e014d3911 100644 --- a/tools/f2fs_io/f2fs_io.c +++ b/tools/f2fs_io/f2fs_io.c @@ -1009,8 +1009,8 @@ static void do_read(int argc, char **argv, const struct cmd_desc *cmd) printf("fadvise SEQUENTIAL|WILLNEED to a file: %s\n", argv[7]); } - io_time_start = get_current_us(); if (do_mmap) { + io_time_start = get_current_us(); data = mmap(NULL, count * buf_size, PROT_READ, MAP_SHARED | MAP_POPULATE, fd, offset); if (data == MAP_FAILED) @@ -1028,6 +1028,8 @@ static void do_read(int argc, char **argv, const struct cmd_desc *cmd) MAP_SHARED, fd, offset); if (data == MAP_FAILED) die("Mmap failed"); + + io_time_start = get_current_us(); if (posix_fadvise(fd, offset, count * buf_size, POSIX_FADV_WILLNEED) != 0) die_errno("fadvise failed"); @@ -1040,6 +1042,7 @@ static void do_read(int argc, char **argv, const struct cmd_desc *cmd) read_cnt = count * buf_size; memcpy(print_buf, data, print_bytes); } else { + io_time_start = get_current_us(); for (i = 0; i < count; i++) { if (!do_dontcache) { ret = pread(fd, buf, buf_size, offset + buf_size * i); -- 2.52.0.107.ga0afd4fd5b-goog _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel