#! /bin/sh
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usage() {
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cat <<EOF
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$0 [ -b path ] [ -s server ] [ -p port ] [ -m mntpoint ] [ -l path | seconds ]
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Generate load, using an assorted set of commands and optionnaly:
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- hackbench if the path to the hackbench binary is specified with -b;
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- nc to send TCP data to "server" port "port" if -s is specified (if -p
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is not specified, the port 9, aka discard is used);
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- dd to write data under "mntpoint" if -m is specified.
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during the runtime of the LTP test if the path to the LTP installation
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directory is specifed with -l or during "seconds" seconds.
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EOF
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}
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port=9
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while [ $# -gt 0 ]; do
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case $1 in
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-h|--help) usage
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exit 0;;
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-b) shift; hackbench="$1"; shift
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;;
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-s) shift; server="$1"; shift
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;;
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-p) shift; port="$1"; shift
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;;
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-m) shift; mntpoint="$1"; shift
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;;
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-l) shift; ltpdir="$1"; shift
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;;
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-*) usage
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exit 1;;
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*) break;;
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esac
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done
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if [ -z "$ltpdir" -a $# -ne 1 ]; then
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usage
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exit 1
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fi
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pids=""
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if [ -n "$server" ]; then
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if type nc > /dev/null 2>&1; then
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nc=nc
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elif type netcat > /dev/null 2>&1; then
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nc=netcat
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else
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echo netcat or nc not found
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exit 1
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fi
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seq 1 399999 > /tmp/netcat.data
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( while :; do cat /tmp/netcat.data; sleep 15; done | $nc $server $port ) &
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pids="$!"
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fi
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if [ -n "$mntpoint" ]; then
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while :; do dd if=/dev/zero of=$mntpoint/bigfile bs=1024000 count=100; sync; done &
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pids="$pids $!"
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fi
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if [ -n "$hackbench" ]; then
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while :; do $hackbench 1; done &
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pids="$pids $!"
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fi
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while :; do cat /proc/interrupts; done > /dev/null 2>&1 &
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pids="$pids $!"
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while :; do ps w; done > /dev/null 2>&1 &
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pids="$pids $!"
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dd if=/dev/zero of=/dev/null &
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pids="$pids $!"
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while :; do ls -lR / > /dev/null 2>&1; done &
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pids="$pids $!"
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test -e /proc/sys/kernel/hung_task_timeout_secs && \
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echo 0 > /proc/sys/kernel/hung_task_timeout_secs
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if [ -n "$ltpdir" ]; then
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cd "$ltpdir" && ./runalltests.sh
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cd "$ltpdir" && ./runalltests.sh
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else
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sleep $1
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fi
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kill $pids > /dev/null 2>&1
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sleep 5
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killall -KILL cat $nc dd hackbench ls ps > /dev/null 2>&1
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killall -KILL `basename $0` sleep > /dev/null 2>&1
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