From patchwork Sat Apr 20 08:45:01 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yu Kuai X-Patchwork-Id: 13637065 Received: from dggsgout11.his.huawei.com (dggsgout11.his.huawei.com [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 45F7014A8D for ; Sat, 20 Apr 2024 08:54:07 +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=1713603249; cv=none; b=JwlKwtxkMvfKQv8jVPtizZn/VodVcAdxqg+aATu9cQtJ9MXkE9WqNSHg10p/kr/ea46UPBV3uGTAmxapJRSgL8wMONA409T5wo22Rt+yz2wdvx8iPBKwW4PuvYHYqv5bV8EHyO6IKejMKdZi1rGU8ZRKR22go5zU2Sa51XqQbCs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713603249; c=relaxed/simple; bh=RjP/I5NNOFTjSZRoYqzsuleNX4tChazXWCb5zE60qzA=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version; b=ZcU6mo12oMefafULagLZrJGI+wQcltWC0tczW1CBgS642/fze53T6cS+a7gBlnaBpMKfX45wI+LeRd0AHUwP+UAJxfGfJ4mWWNjuK/xZXdEUXbk0dp4hhEGYs5l+mxkwH7b3AsG9nizkZ8l6U/PYNqyr6QWm7eGY/NN22tufLtg= 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 [172.19.163.235]) by dggsgout11.his.huawei.com (SkyGuard) with ESMTP id 4VM50L5p1sz4f3lCm for ; Sat, 20 Apr 2024 16:53:54 +0800 (CST) Received: from mail02.huawei.com (unknown [10.116.40.112]) by mail.maildlp.com (Postfix) with ESMTP id D355B1A0568 for ; Sat, 20 Apr 2024 16:54:03 +0800 (CST) Received: from huaweicloud.com (unknown [10.175.104.67]) by APP1 (Coremail) with SMTP id cCh0CgBHGBGqgiNmW_HiKQ--.35908S5; Sat, 20 Apr 2024 16:54:03 +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 v3 blktests 1/5] tests/throtl: add first test for blk-throttle Date: Sat, 20 Apr 2024 16:45:01 +0800 Message-Id: <20240420084505.3624763-2-yukuai1@huaweicloud.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240420084505.3624763-1-yukuai1@huaweicloud.com> References: <20240420084505.3624763-1-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: cCh0CgBHGBGqgiNmW_HiKQ--.35908S5 X-Coremail-Antispam: 1UD129KBjvJXoWxuFyUCr4ruF47Cr4xZw18Xwb_yoWrGF1fpr WUua1rKw4xJFsFyr13K3WUZFWrAws7ZF47A3srGr1Yyr47tw4Ygw42yryUXFWfAFnrXr4r Za18ZFWrCF1DZ3DanT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUBE14x267AKxVW5JVWrJwAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2048vs2IY020E87I2jVAFwI0_Jr4l82xGYIkIc2 x26xkF7I0E14v26r1I6r4UM28lY4IEw2IIxxk0rwA2F7IY1VAKz4vEj48ve4kI8wA2z4x0 Y4vE2Ix0cI8IcVAFwI0_Xr0_Ar1l84ACjcxK6xIIjxv20xvEc7CjxVAFwI0_Cr0_Gr1UM2 8EF7xvwVC2z280aVAFwI0_GcCE3s1l84ACjcxK6I8E87Iv6xkF7I0E14v26rxl6s0DM2AI xVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI64kE6c02F40Ex7xfMcIj6xIIjxv20x vE14v26r106r15McIj6xkF7I0En7xvr7AKxVWUJVW8JwAv7VC2z280aVAFwI0_Jr0_Gr1l Ox8S6xCaFVCjc4AY6r1j6r4UM4x0Y48IcxkI7VAKI48JM4x0x7Aq67IIx4CEVc8vx2IErc IFxwCF04k20xvY0x0EwIxGrwCFx2IqxVCFs4IE7xkEbVWUJVW8JwC20s026c02F40E14v2 6r1j6r18MI8I3I0E7480Y4vE14v26r106r1rMI8E67AF67kF1VAFwI0_JF0_Jw1lIxkGc2 Ij64vIr41lIxAIcVC0I7IYx2IY67AKxVWUJVWUCwCI42IY6xIIjxv20xvEc7CjxVAFwI0_ Gr0_Cr1lIxAIcVCF04k26cxKx2IYs7xG6r1j6r1xMIIF0xvEx4A2jsIE14v26r1j6r4UMI IF0xvEx4A2jsIEc7CjxVAFwI0_Gr0_Gr1UYxBIdaVFxhVjvjDU0xZFpf9x0JUDManUUUUU = 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 | 88 ++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 133 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..835cac2 --- /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 ${TEST_NAME}" + + if ! _set_up_throtl; then + return 1; + fi + + local bps_limit=$((1024 * 1024)) + + _throtl_set_limits wbps=$bps_limit + _throtl_test_io write 4k 256 + _throtl_remove_limits + + _throtl_set_limits wiops=256 + _throtl_test_io write 4k 256 + _throtl_remove_limits + + _throtl_set_limits rbps=$bps_limit + _throtl_test_io read 4k 256 + _throtl_remove_limits + + _throtl_set_limits riops=256 + _throtl_test_io read 4k 256 + _throtl_remove_limits + + _clean_up_throtl + 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..2ddbac8 --- /dev/null +++ b/tests/throtl/rc @@ -0,0 +1,88 @@ +#!/bin/bash +# SPDX-License-Identifier: GPL-3.0+ +# Copyright (C) 2024 Yu Kuai +# +# Tests for blk-throttle + +. common/rc +. common/null_blk +. common/cgroup + +THROTL_DIR=$(echo "$TEST_NAME" | tr '/' '_') +THROTL_DEV=dev_nullb + +group_requires() { + _have_root + _have_null_blk + _have_kernel_option BLK_DEV_THROTTLING + _have_cgroup2_controller io + _have_program bc +} + +# Create a new null_blk device, and create a new blk-cgroup for test. +_set_up_throtl() { + + if ! _configure_null_blk $THROTL_DEV "$@" power=1; then + return 1 + fi + + if ! _init_cgroup2; then + _exit_null_blk + return 1 + fi + + echo "+io" > "$(_cgroup2_base_dir)/cgroup.subtree_control" + echo "+io" > "$CGROUP2_DIR/cgroup.subtree_control" + + mkdir -p "$CGROUP2_DIR/$THROTL_DIR" + return 0; +} + +_clean_up_throtl() { + rmdir "$CGROUP2_DIR/$THROTL_DIR" + echo "-io" > "$CGROUP2_DIR/cgroup.subtree_control" + echo "-io" > "$(_cgroup2_base_dir)/cgroup.subtree_control" + + _exit_cgroup2 + _exit_null_blk +} + +_throtl_set_limits() { + echo "$(cat /sys/block/$THROTL_DEV/dev) $*" > \ + "$CGROUP2_DIR/$THROTL_DIR/io.max" +} + +_throtl_remove_limits() { + echo "$(cat /sys/block/$THROTL_DEV/dev) rbps=max wbps=max riops=max wiops=max" > \ + "$CGROUP2_DIR/$THROTL_DIR/io.max" +} + +# Create an asynchronous thread and bind it to the specified blk-cgroup, issue +# IO and then print time elapsed to the second, blk-throttle limits should be +# set before this function. +_throtl_test_io() { + local pid + + { + local start_time + local end_time + local elapsed + + sleep 0.1 + start_time=$(date +%s.%N) + + if [ "$1" == "read" ]; then + dd if=/dev/$THROTL_DEV of=/dev/null bs="$2" count="$3" iflag=direct status=none + elif [ "$1" == "write" ]; then + dd of=/dev/$THROTL_DEV 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" > "$CGROUP2_DIR/$THROTL_DIR/cgroup.procs" + wait $pid +}