mirror of
https://github.com/linux-apfs/apfstests.git
synced 2026-05-01 15:01:44 -07:00
Nathan Scott
65 lines
1.2 KiB
Bash
65 lines
1.2 KiB
Bash
#!/bin/sh
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#
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# Copyright (c) 2003-2004 Silicon Graphics, Inc. All Rights Reserved.
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#
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help() {
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cat <<END
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Measure scaling of multiple cpus readin the same set of files.
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(NASA testcase).
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Usage: $0 [-b <bytes>] [-f <files>] [-s] [-B] [-v] cpus ...
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or
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$0 -i [-b <bytes>] [-f <files>]
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-b file size in bytes
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-f number of files
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-s keep processes synchronized when reading files
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-B use bcfree to free buffer cache pages before each run
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END
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exit 1
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}
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err () {
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echo "ERROR - $*"
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exit 1
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}
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BYTES=8192
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FILES=10
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SYNC=""
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VERBOSE=""
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STRIDED=""
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BCFREE=0
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INIT=0
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OPTS="f:b:vsiSBH"
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while getopts "$OPTS" c ; do
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case $c in
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H) help;;
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f) FILES=${OPTARG};;
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b) BYTES=${OPTARG};;
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i) INIT=1;;
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B) BCFREE=1;;
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S) STRIDED="-S";;
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s) SYNC="-s";;
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v) VERBOSE="-v";;
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\?) help;;
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esac
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done
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shift `expr $OPTIND - 1`
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if [ $INIT -gt 0 ] ; then
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echo "Initializing $BYTES bytes, $FILES files"
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./scaleread $VERBOSE -i -b $BYTES -f $FILES
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sync
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else
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[ $# -gt 0 ] || help
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echo "Testing $BYTES bytes, $FILES files"
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for CPUS in $* ; do
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[ $BCFREE -eq 0 ] || bcfree -a
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/usr/bin/time -f "$CPUS: %e wall, %S sys, %U user" ./scaleread \
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$SYNC $STRIDED $VERBOSE -b $BYTES -f $FILES -c $CPUS
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done
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fi
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