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https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Darrick J. Wong
dd2c726684
For the t_open_tmpfiles tests, limit ourselves to half of file-max so that we don't OOM the test machine. [Eryu: fix comments too to match the new limit] Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com> Reviewed-by: Allison Henderson <allison.henderson@oracle.com> Signed-off-by: Eryu Guan <guaneryu@gmail.com>
72 lines
1.8 KiB
Bash
Executable File
72 lines
1.8 KiB
Bash
Executable File
#! /bin/bash
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# SPDX-License-Identifier: GPL-2.0+
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# Copyright (c) 2019 Oracle, Inc. All Rights Reserved.
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#
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# FS QA Test No. 531
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#
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# Stress test creating a lot of unlinked O_TMPFILE files and closing them
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# all at once, checking that we don't blow up the filesystem. This is sort
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# of a performance test for the xfs unlinked inode backref patchset, but it
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# applies to most other filesystems.
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#
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# Use every CPU possible to stress the filesystem.
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#
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seq=`basename $0`
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seqres=$RESULT_DIR/$seq
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echo "QA output created by $seq"
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tmp=/tmp/$$
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status=1 # failure is the default!
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testfile=$TEST_DIR/$seq.txt
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trap "_cleanup; exit \$status" 0 1 2 3 15
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_cleanup()
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{
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cd /
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rm -f $tmp.*
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}
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# get standard environment, filters and checks
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. ./common/rc
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# real QA test starts here
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_supported_fs generic
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_supported_os Linux
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_require_scratch
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_require_test_program "t_open_tmpfiles"
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rm -f $seqres.full
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_scratch_mkfs >> $seqres.full 2>&1
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_scratch_mount
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# Try to load up all the CPUs, two threads per CPU.
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nr_cpus=$(( $(getconf _NPROCESSORS_ONLN) * 2 ))
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# Set ULIMIT_NOFILE to min(file-max / 2, 50000 files per LOAD_FACTOR)
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# so that this test doesn't take forever or OOM the box
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max_files=$((50000 * LOAD_FACTOR))
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max_allowable_files=$(( $(cat /proc/sys/fs/file-max) / 2 ))
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test $max_allowable_files -gt 0 && test $max_files -gt $max_allowable_files && \
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max_files=$max_allowable_files
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ulimit -n $max_files
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# Open a lot of unlinked files
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echo create >> $seqres.full
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for i in $(seq 1 $nr_cpus); do
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mkdir $SCRATCH_MNT/$i
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$here/src/t_open_tmpfiles $SCRATCH_MNT/$i >> $seqres.full &
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done
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wait
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# Unmount to prove that we can clean it all
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echo umount >> $seqres.full
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before=$(date +%s)
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_scratch_unmount
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after=$(date +%s)
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echo "Unmount took $((after - before))s." >> $seqres.full
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# Mount so that we can run the usual checks
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echo silence is golden
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_scratch_mount
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status=0
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exit
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