mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Dave Chinner
e714acc0ef
One of the big cpu time consumers when running xfsqa on UML is forking of new processes. when looping lots of times, using 'expr' to calculate the loop counter increment means we fork at least once every loop. using shell builtins means that we don't fork and many tests run substantially faster. Some tests are even runnable with this modification. e.g. 110 went from taking 4500s to run down to 9s with the loop iterators changed to avoid forking. Signed-off-by: Dave Chinner <david@fromorbit.com> Signed-off-by: Christoph Hellwig <hch@lst.de>
77 lines
1.4 KiB
Bash
Executable File
77 lines
1.4 KiB
Bash
Executable File
#! /bin/sh
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# FS QA Test No. 089
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#
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# Emulate the way Linux mount manipulates /etc/mtab to attempt to
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# reproduce a possible bug in rename (see src/t_mtab.c).
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#
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#-----------------------------------------------------------------------
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# Copyright (c) 2000-2004 Silicon Graphics, Inc. All Rights Reserved.
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#-----------------------------------------------------------------------
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#
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# creator
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owner=nathans@sgi.com
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seq=`basename $0`
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echo "QA output created by $seq"
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here=`pwd`
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tmp=/tmp/$$
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status=1 # failure is the default!
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trap "rm -f $tmp.*; exit \$status" 0 1 2 3 15
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# get standard environment, filters and checks
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. ./common.rc
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. ./common.filter
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addentries()
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{
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count=$1
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pattern="%0$2d"
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while [ $count -gt 0 ]; do
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touch `printf $pattern $count`
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let count=$count-1
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done
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}
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# real QA test starts here
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_supported_fs xfs
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_supported_os Linux
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rm -f $seq.full
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[ "X$TEST_DIR" = "X" ] && exit 1
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cd $TEST_DIR
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rm -fr test
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mkdir test || exit 1
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cd $TEST_DIR/test
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mount > t_mtab
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mtab()
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{
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$here/src/t_mtab 50 &
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$here/src/t_mtab 50 &
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$here/src/t_mtab 50 &
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wait
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$here/src/t_mtab 10000
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echo directory entries:
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ls | grep mtab
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echo directory entries >> $here/$seq.full
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ls -li >> $here/$seq.full
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}
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# directory with only a few entries
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mtab
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# directory with a hundred more entries, each 4chars wide
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addentries 100 4
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mtab
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# directory with a thousand more entries, each 8chars wide
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addentries 1000 8
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mtab
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status=0
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exit
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