From patchwork Wed Apr 17 02:20:01 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yu Kuai X-Patchwork-Id: 13632807 Received: from dggsgout11.his.huawei.com (unknown [45.249.212.51]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 34BED63A9 for ; Wed, 17 Apr 2024 02:28:55 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.51 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713320938; cv=none; b=MeAt4RV1JkWF/2ptZcwbWM36SZvk3rsK5U5iG9qldWAXMg3OaQfnpteeh6jkA+gC7im8OIN6vXr6fg7z/FXY+2hscqLBHf2RvmgpBYYIhc+mC7V9QDRNg/a8NhB9/BM8D83EV1GTWZ5a1PihTH/03Nl1rvh8BnCCvQOeT49xc74= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713320938; c=relaxed/simple; bh=Rs53PvVtWoj89AYAR6ac06EuH4mNAwmWrIzPjqdd988=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=Z88PCN/3thL2IKse29rJjFoCdzHeIplCY1B5/bmqLwx9a6Rx7vbW63Zju8AZhBjj1urVesYkvaK7j1jOlfeC9Pl9HIPyFrOSjaB01K09FkWqY1rE2QlXe7olIrNdlDkw/v7lMY+bew+6Ua/fB/BqhiROWmlF5TIBQ2oPAjMr9dg= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com; spf=pass smtp.mailfrom=huaweicloud.com; arc=none smtp.client-ip=45.249.212.51 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=huaweicloud.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huaweicloud.com Received: from mail.maildlp.com (unknown [172.19.93.142]) by dggsgout11.his.huawei.com (SkyGuard) with ESMTP id 4VK4bN2BySz4f3kkP for ; Wed, 17 Apr 2024 10:28:48 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.112]) by mail.maildlp.com (Postfix) with ESMTP id E65A81A016E for ; Wed, 17 Apr 2024 10:28:52 +0800 (CST) Received: from huaweicloud.com (unknown [10.175.104.67]) by APP1 (Coremail) with SMTP id cCh0CgBHGBHiMx9mtJvAKA--.38748S5; Wed, 17 Apr 2024 10:28:52 +0800 (CST) From: Yu Kuai To: saranyamohan@google.com, tj@kernel.org, axboe@kernel.dk Cc: linux-block@vger.kernel.org, yukuai3@huawei.com, yukuai1@huaweicloud.com, yangerkun@huawei.com Subject: [PATCH v2 blktests 1/5] tests/throtl: add first test for blk-throttle Date: Wed, 17 Apr 2024 10:20:01 +0800 Message-Id: <20240417022005.1410525-2-yukuai1@huaweicloud.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240417022005.1410525-1-yukuai1@huaweicloud.com> References: <20240417022005.1410525-1-yukuai1@huaweicloud.com> Precedence: bulk X-Mailing-List: linux-block@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-CM-TRANSID: cCh0CgBHGBHiMx9mtJvAKA--.38748S5 X-Coremail-Antispam: 1UD129KBjvJXoWxGw18KrWDWrykKryktr1kKrg_yoW5ZF45p3 yUWFWFkr4xGFsrtr13K3W29a4rZw4kAFW7A3srGr15Zr42qrWUtF1Iyr1YyFWfJFy7WFWr Za10qFWkK3WUZrDanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUU9m14x267AKxVW5JVWrJwAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_Jr4l82xGYIkIc2 x26xkF7I0E14v26r1I6r4UM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2z4x0 Y4vE2Ix0cI8IcVAFwI0_Ar0_tr1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Gr1j6F4UJw A2z4x0Y4vEx4A2jsIE14v26rxl6s0DM28EF7xvwVC2z280aVCY1x0267AKxVW0oVCq3wAS 0I0E0xvYzxvE52x082IY62kv0487Mc02F40EFcxC0VAKzVAqx4xG6I80ewAv7VC0I7IYx2 IY67AKxVWUJVWUGwAv7VC2z280aVAFwI0_Jr0_Gr1lOx8S6xCaFVCjc4AY6r1j6r4UM4x0 Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErcIFxwCF04k20xvY0x0EwIxGrwCFx2 IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F40E14v26r1j6r18MI8I3I0E7480Y4vE14v2 6r106r1rMI8E67AF67kF1VAFwI0_JF0_Jw1lIxkGc2Ij64vIr41lIxAIcVC0I7IYx2IY67 AKxVWUJVWUCwCI42IY6xIIjxv20xvEc7CjxVAFwI0_Gr0_Cr1lIxAIcVCF04k26cxKx2IY s7xG6r1j6r1xMIIF0xvEx4A2jsIE14v26r1j6r4UMIIF0xvEx4A2jsIEc7CjxVAFwI0_Gr 0_Gr1UYxBIdaVFxhVjvjDU0xZFpf9x0JUqAp5UUUUU= X-CM-SenderInfo: 51xn3trlr6x35dzhxuhorxvhhfrp/ From: Yu Kuai Test basic functionality. Signed-off-by: Yu Kuai --- tests/throtl/001 | 39 ++++++++++++++++++++++++ tests/throtl/001.out | 6 ++++ tests/throtl/rc | 71 ++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 116 insertions(+) create mode 100755 tests/throtl/001 create mode 100644 tests/throtl/001.out create mode 100644 tests/throtl/rc diff --git a/tests/throtl/001 b/tests/throtl/001 new file mode 100755 index 0000000..739efe2 --- /dev/null +++ b/tests/throtl/001 @@ -0,0 +1,39 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-3.0+ +# Copyright (C) 2024 Yu Kuai +# +# Test basic functionality of blk-throttle + +. tests/throtl/rc + +DESCRIPTION="basic functionality" +QUICK=1 + +test() { + echo "Running ${TEST_NAME}" + + if ! _set_up_test nr_devices=1; then + return 1; + fi + + bps_limit=$((1024 * 1024)) + + _set_limits wbps=$bps_limit + _test_io write 4k 256 + _remove_limits + + _set_limits wiops=256 + _test_io write 4k 256 + _remove_limits + + _set_limits rbps=$bps_limit + _test_io read 4k 256 + _remove_limits + + _set_limits riops=256 + _test_io read 4k 256 + _remove_limits + + _clean_up_test + echo "Test complete" +} diff --git a/tests/throtl/001.out b/tests/throtl/001.out new file mode 100644 index 0000000..a3edfdd --- /dev/null +++ b/tests/throtl/001.out @@ -0,0 +1,6 @@ +Running throtl/001 +1 +1 +1 +1 +Test complete diff --git a/tests/throtl/rc b/tests/throtl/rc new file mode 100644 index 0000000..871102c --- /dev/null +++ b/tests/throtl/rc @@ -0,0 +1,71 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-3.0+ +# Copyright (C) 2024 Yu Kuai +# +# Tests for blk-throttle + +. common/rc +. common/null_blk + +CG=/sys/fs/cgroup +TEST_DIR=$CG/blktests_throtl +devname=nullb0 + +group_requires() { + _have_root + _have_null_blk + _have_kernel_option BLK_DEV_THROTTLING + _have_cgroup2_controller io +} + +# Create a new null_blk device, and create a new blk-cgroup for test. +_set_up_test() { + if ! _init_null_blk "$*"; then + return 1; + fi + + echo +io > $CG/cgroup.subtree_control + mkdir $TEST_DIR + + return 0; +} + +_clean_up_test() { + rmdir $TEST_DIR + echo -io > $CG/cgroup.subtree_control + _exit_null_blk +} + +_set_limits() { + dev=$(cat /sys/block/$devname/dev) + echo "$dev $*" > $TEST_DIR/io.max +} + +_remove_limits() { + dev=$(cat /sys/block/$devname/dev) + echo "$dev rbps=max wbps=max riops=max wiops=max" > $TEST_DIR/io.max +} + +# Create an asynchronous thread and bind it to the specified blk-cgroup, issue +# IO and then print time elapsed to the second, blk-throttle limits should be +# set before this function. +_test_io() { + { + sleep 0.1 + start_time=$(date +%s.%N) + + if [ "$1" == "read" ]; then + dd if=/dev/$devname of=/dev/null bs="$2" count="$3" iflag=direct status=none + elif [ "$1" == "write" ]; then + dd of=/dev/$devname if=/dev/zero bs="$2" count="$3" oflag=direct status=none + fi + + end_time=$(date +%s.%N) + elapsed=$(echo "$end_time - $start_time" | bc) + printf "%.0f\n" "$elapsed" + } & + + pid=$! + echo "$pid" > $TEST_DIR/cgroup.procs + wait $pid +}