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 AD24FC83F21 for ; Mon, 14 Jul 2025 11:56:23 +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:In-Reply-To:References:To:MIME-Version:Date: Message-ID:Sender:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=rqv2Cjg10/UUPbJ4SLTYgF6hfs/ANz7tUqNwx0Lyw5I=; b=d5sImPrW4unx4D8dMt9nWDOdVz i07vUAYCsdkURlogNNhVtxy0MYZIEE0bkdSvvbHwaFkKKjS7Ii31tAxk+mqES8MyYC1U41GIzUvfL RlqiJY0+6GUeKGAGtSjweGJ9NwiDLeTQOSL9dFnjjAefStU4d4Rc2ycsgcH7WNUp+DUM=; Received: from [127.0.0.1] (helo=sfs-ml-4.v29.lw.sourceforge.com) by sfs-ml-4.v29.lw.sourceforge.com with esmtp (Exim 4.95) (envelope-from ) id 1ubHnD-0001NW-Az; Mon, 14 Jul 2025 11:56:23 +0000 Received: from [172.30.29.66] (helo=mx.sourceforge.net) by sfs-ml-4.v29.lw.sourceforge.com with esmtps (TLS1.2) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.95) (envelope-from ) id 1ubHnB-0001NN-RG for linux-f2fs-devel@lists.sourceforge.net; Mon, 14 Jul 2025 11:56:21 +0000 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sourceforge.net; s=x; h=Content-Transfer-Encoding:Content-Type:In-Reply-To: From:References:To:Subject:Cc:MIME-Version:Date:Message-ID:Sender:Reply-To: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help:List-Unsubscribe: List-Subscribe:List-Post:List-Owner:List-Archive; bh=G+JxGQUh1PTHdqNYUn86bOjDjTCuVGCUh7sEwvKsCYE=; b=Uw/79O6cbme5OKBwVlC/a30op5 IUfF/vh+UPy4XMbiG5DYblcjI+3ujVcIthDpkTxuU2KtGTQii9wmaSpvzYA/aN5jenY8F2B+f86tl 62/DiXhyaCc2mqG7SBjJmDZMA2GLA8r3/E0haiTTMAck1HPn/20Guf4KDOKnYgVrheCk=; DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sf.net; s=x ; h=Content-Transfer-Encoding:Content-Type:In-Reply-To:From:References:To: Subject:Cc:MIME-Version:Date:Message-ID:Sender:Reply-To:Content-ID: Content-Description:Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc :Resent-Message-ID:List-Id:List-Help:List-Unsubscribe:List-Subscribe: List-Post:List-Owner:List-Archive; bh=G+JxGQUh1PTHdqNYUn86bOjDjTCuVGCUh7sEwvKsCYE=; b=G0Ot6Xwl7nmLo/l/NagNGHs3O3 BT6ukvRCc9VCFsDncRjS00pAPy/476ICQSav4/1CxJVY5F09qVKU8YavwT7pqVex2tF76f+S9m6Jc MCct89YslswT3H4veMDxznJBQJARWK8ZRq3OYTA6GTH5Z46n9whCZXX9/JYQm7PiX2SI=; Received: from nyc.source.kernel.org ([147.75.193.91]) by sfi-mx-2.v28.lw.sourceforge.com with esmtps (TLS1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.95) id 1ubHnA-00029x-Vo for linux-f2fs-devel@lists.sourceforge.net; Mon, 14 Jul 2025 11:56:21 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id 487DAA57030; Mon, 14 Jul 2025 11:56:15 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id AC22FC4CEED; Mon, 14 Jul 2025 11:56:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1752494175; bh=A53GJs9ZcqK8pSNSDIAWnbD4zkuTi4pLp585skK66cg=; h=Date:Cc:Subject:To:References:From:In-Reply-To:From; b=m0gQv7pcsx0u1fPcXl67I3e5vkfKUs+OI+D0ahrph17kX7UXNyFrYv+Xi7JBA10wJ oNNI/QXPORptM7VX0YiWOXJNIXhPiDu7ce+WW6wcoewbv6jGJpwswI9k9096nTbDdl hN3dTnOIuLWy2wRyuTLu1XlX+CfWMTJSUHo0bUnWcsXmIEsb4Gp4w9+vWWDpS8kwus fSOmGd3vBJCsfGeZM/GClN3+JK3uE1ECA9RUL+MYu8M4pfvellfrY38AfCr7GAiORr yK1j+IPiJrx+HlBoLlqRYrzam6DgpD7fj9vnLBoLEYLr6rpISNi4ds7D09qPFFoQYK JyihMiSEIE+EQ== Message-ID: <4f3847e6-0859-4ec7-b626-50db81dd0de1@kernel.org> Date: Mon, 14 Jul 2025 19:56:11 +0800 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird To: Daniel Lee , Jaegeuk Kim References: <20250617140457.2358846-1-chullee@google.com> Content-Language: en-US In-Reply-To: <20250617140457.2358846-1-chullee@google.com> X-Headers-End: 1ubHnA-00029x-Vo Subject: Re: [f2fs-dev] [PATCH v3] f2fs_io: add test_create_perf command 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: Chao Yu via Linux-f2fs-devel Reply-To: Chao Yu Cc: linux-f2fs-devel@lists.sourceforge.net Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net Daniel, It missed to add doc entry, just found the issue. Thanks, On 6/17/25 22:04, Daniel Lee wrote: > A new command 'test_create_perf', has been introduced to measure > the performance of creating and deleting many files. > > Signed-off-by: Daniel Lee > --- > v3: make sync optional for deletion phase > v2: Rename command and make fsync optional > --- > tools/f2fs_io/f2fs_io.c | 146 ++++++++++++++++++++++++++++++++++++++++ > 1 file changed, 146 insertions(+) > > diff --git a/tools/f2fs_io/f2fs_io.c b/tools/f2fs_io/f2fs_io.c > index 6531b55..f6649f1 100644 > --- a/tools/f2fs_io/f2fs_io.c > +++ b/tools/f2fs_io/f2fs_io.c > @@ -2092,6 +2092,151 @@ static void do_ftruncate(int argc, char **argv, const struct cmd_desc *cmd) > exit(0); > } > > +#define test_create_perf_desc "measure file creation speed" > +#define test_create_perf_help \ > +"f2fs_io test_create_perf [-s] [-S] \n\n" \ > +"Measures file creation and deletion performance.\n" \ > +" The target directory where files will be created.\n" \ > +" The total number of files to create and delete.\n" \ > +" The size of each file in kb.\n" \ > +" [-s] Call fsync() after each file creation.\n" \ > +" [-S] Call sync() after deleting all files.\n" > + > +static void do_test_create_perf(int argc, char **argv, const struct cmd_desc *cmd) > +{ > + bool do_fsync = false, do_sync = false; > + int opt; > + char *dir; > + int num_files; > + int size_kb; > + char *write_buffer = NULL; > + > + while ((opt = getopt(argc, argv, "sS")) != -1) { > + switch (opt) { > + case 's': > + do_fsync = true; > + break; > + case 'S': > + do_sync = true; > + break; > + default: > + fputs(cmd->cmd_help, stderr); > + exit(1); > + } > + } > + > + argc -= optind; > + argv += optind; > + > + if (argc != 3) { > + fputs("Excess arguments\n\n", stderr); > + fputs(cmd->cmd_help, stderr); > + exit(1); > + } > + > + dir = argv[0]; > + num_files = atoi(argv[1]); > + size_kb = atoi(argv[2]); > + > + if (num_files <= 0) { > + fprintf(stderr, "Error: Number of files must be positive.\n"); > + exit(1); > + } > + > + if (size_kb > 0) { > + write_buffer = malloc(size_kb * 1024); > + if (!write_buffer) { > + perror("Failed to allocate write buffer"); > + exit(1); > + } > + memset(write_buffer, 'a', size_kb * 1024); > + } > + > + // Creation Phase > + printf("Starting test: Creating %d files of %dKB each in %s (fsync: %s)\n", > + num_files, size_kb, dir, > + do_fsync ? "Enabled" : "Disabled"); > + > + struct timespec create_start, create_end; > + > + clock_gettime(CLOCK_MONOTONIC, &create_start); > + > + for (int i = 0; i < num_files; i++) { > + char path[1024]; > + > + snprintf(path, sizeof(path), "%s/test_file_%d", dir, i); > + > + int fd = open(path, O_WRONLY | O_CREAT, 0644); > + > + if (fd < 0) { > + perror("Error opening file"); > + continue; > + } > + if (size_kb > 0) { > + if (write(fd, write_buffer, size_kb * 1024) < 0) > + perror("Error writing to file"); > + } > + > + if (do_fsync) > + fsync(fd); > + > + close(fd); > + } > + > + clock_gettime(CLOCK_MONOTONIC, &create_end); > + > + > + // Deletion Phase > + printf("Deleting %d created files (sync: %s)\n", num_files, > + do_sync ? "Enabled" : "Disabled"); > + > + struct timespec del_start, del_end; > + > + clock_gettime(CLOCK_MONOTONIC, &del_start); > + > + for (int i = 0; i < num_files; i++) { > + char path[1024]; > + > + snprintf(path, sizeof(path), "%s/test_file_%d", dir, i); > + if (unlink(path) != 0) > + perror("Error unlinking file"); > + } > + > + if (do_sync) > + sync(); > + > + clock_gettime(CLOCK_MONOTONIC, &del_end); > + > + long create_seconds = create_end.tv_sec - create_start.tv_sec; > + long create_ns = create_end.tv_nsec - create_start.tv_nsec; > + double create_time_s = (double)create_seconds + (double)create_ns / 1000000000.0; > + double create_throughput = (create_time_s > 0) ? (num_files / create_time_s) : 0; > + > + long del_seconds = del_end.tv_sec - del_start.tv_sec; > + long del_ns = del_end.tv_nsec - del_start.tv_nsec; > + double del_time_s = (double)del_seconds + (double)del_ns / 1000000000.0; > + double del_throughput = (del_time_s > 0) ? (num_files / del_time_s) : 0; > + > + printf("Operation,total_files,file_size_kb,total_time_s,throughput_files_per_sec\n"); > + > + printf("CREATE,%d,%d,%.4f,%.2f\n", > + num_files, > + size_kb, > + create_time_s, > + create_throughput); > + > + printf("DELETE,%d,%d,%.4f,%.2f\n", > + num_files, > + size_kb, > + del_time_s, > + del_throughput); > + > + if (write_buffer) > + free(write_buffer); > + > + exit(0); > +} > + > #define CMD_HIDDEN 0x0001 > #define CMD(name) { #name, do_##name, name##_desc, name##_help, 0 } > #define _CMD(name) { #name, do_##name, NULL, NULL, CMD_HIDDEN } > @@ -2140,6 +2285,7 @@ const struct cmd_desc cmd_list[] = { > CMD(get_advise), > CMD(ioprio), > CMD(ftruncate), > + CMD(test_create_perf), > { NULL, NULL, NULL, NULL, 0 } > }; > _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel