From: Yu Kuai <yukuai1@huaweicloud.com>
To: linux-block@vger.kernel.org, saranyamohan@google.com,
axboe@kernel.dk, tj@kernel.org
Cc: yukuai3@huawei.com, yukuai1@huaweicloud.com, yangerkun@huawei.com
Subject: [PATCH blktests 3/5] tests/throtl: add a new test 003
Date: Tue, 16 Apr 2024 10:00:40 +0800 [thread overview]
Message-ID: <20240416020042.509291-4-yukuai1@huaweicloud.com> (raw)
In-Reply-To: <20240416020042.509291-1-yukuai1@huaweicloud.com>
From: Yu Kuai <yukuai3@huawei.com>
Test bps limit over IO split, regression tests for:
commit 111be8839817 ("block-throttle: avoid double charge")
Signed-off-by: Yu Kuai <yukuai3@huawei.com>
---
tests/throtl/003 | 82 ++++++++++++++++++++++++++++++++++++++++++++
tests/throtl/003.out | 4 +++
2 files changed, 86 insertions(+)
create mode 100755 tests/throtl/003
create mode 100644 tests/throtl/003.out
diff --git a/tests/throtl/003 b/tests/throtl/003
new file mode 100755
index 0000000..06d594c
--- /dev/null
+++ b/tests/throtl/003
@@ -0,0 +1,82 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-3.0+
+# Copyright (C) 2024 Yu Kuai
+#
+# Test bps limit work correctly for big IO of blk-throttle, regression test for
+# commie 111be8839817 ("block-throttle: avoid double charge")
+
+. tests/throtl/rc
+
+DESCRIPTION="bps limit over IO split"
+QUICK=1
+
+CG=/sys/fs/cgroup
+TEST_DIR=$CG/blktests_throtl
+devname=nullb0
+dev=""
+
+set_up_test() {
+ if ! _init_null_blk max_sectors=8; then
+ return 1;
+ fi
+
+ dev=$(cat /sys/block/$devname/dev)
+ echo +io > $CG/cgroup.subtree_control
+ mkdir $TEST_DIR
+
+ return 0;
+}
+
+clean_up_test() {
+ rmdir $TEST_DIR
+ echo -io > $CG/cgroup.subtree_control
+ _exit_null_blk
+}
+
+config_throtl() {
+ echo "$dev $*" > $TEST_DIR/io.max
+}
+
+remove_config() {
+ echo "$dev rbps=max wbps=max riops=max wiops=max" > $TEST_DIR/io.max
+}
+
+test_io() {
+ config_throtl "$1"
+
+ {
+ sleep 0.1
+ start_time=$(date +%s.%N)
+
+ if [ "$2" == "read" ]; then
+ dd if=/dev/$devname of=/dev/null bs=1M count=1 iflag=direct status=none
+ elif [ "$2" == "write" ]; then
+ dd of=/dev/$devname if=/dev/zero bs=1M count=1 oflag=direct status=none
+ fi
+
+ end_time=$(date +%s.%N)
+ elapsed=$(echo "$end_time - $start_time" | bc)
+ printf "%.0f\n" "$elapsed"
+ } &
+
+ pid=$!
+ echo $! > $TEST_DIR/cgroup.procs
+ wait $pid
+
+ remove_config
+}
+
+test() {
+ echo "Running ${TEST_NAME}"
+
+ if ! set_up_test; then
+ return 1;
+ fi
+
+ limit=$((1024 * 1024))
+ test_io wbps=$limit write
+ test_io rbps=$limit read
+
+ clean_up_test
+ echo "Test complete"
+}
diff --git a/tests/throtl/003.out b/tests/throtl/003.out
new file mode 100644
index 0000000..07a80b3
--- /dev/null
+++ b/tests/throtl/003.out
@@ -0,0 +1,4 @@
+Running throtl/003
+1
+1
+Test complete
--
2.39.2
next prev parent reply other threads:[~2024-04-16 2:09 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-16 2:00 [PATCH blktests 0/5] add new tests for blk-throttle Yu Kuai
2024-04-16 2:00 ` [PATCH blktests 1/5] tests/throtl: add first test " Yu Kuai
2024-04-16 3:02 ` Chaitanya Kulkarni
2024-04-16 3:17 ` Yu Kuai
2024-04-16 3:37 ` Chaitanya Kulkarni
2024-04-16 2:00 ` [PATCH blktests 2/5] tests/throtl: add a new test 002 Yu Kuai
2024-04-16 2:00 ` Yu Kuai [this message]
2024-04-16 2:00 ` [PATCH blktests 4/5] tests/throtl: add a new test 004 Yu Kuai
2024-04-16 2:00 ` [PATCH blktests 5/5] tests/throtl: add a new test 005 Yu Kuai
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