| #!/bin/bash |
| # SPDX-License-Identifier: GPL-2.0+ |
| # |
| # Start up the specified number of jitter.sh scripts in the background. |
| # |
| # Usage: . jitterstart.sh n jittering-dir duration [ sleepmax [ spinmax ] ] |
| # |
| # n: Number of jitter.sh scripts to start up. |
| # jittering-dir: Directory in which to put "jittering" file. |
| # duration: Time to run in seconds. |
| # sleepmax: Maximum microseconds to sleep, defaults to one second. |
| # spinmax: Maximum microseconds to spin, defaults to one millisecond. |
| # |
| # Copyright (C) 2021 Facebook, Inc. |
| # |
| # Authors: Paul E. McKenney <paulmck@kernel.org> |
| |
| jitter_n=$1 |
| if test -z "$jitter_n" |
| then |
| echo jitterstart.sh: Missing count of jitter.sh scripts to start. |
| exit 33 |
| fi |
| jittering_dir=$2 |
| if test -z "$jittering_dir" |
| then |
| echo jitterstart.sh: Missing directory in which to place jittering file. |
| exit 34 |
| fi |
| shift |
| shift |
| |
| touch ${jittering_dir}/jittering |
| for ((jitter_i = 1; jitter_i <= $jitter_n; jitter_i++)) |
| do |
| jitter.sh $jitter_i "${jittering_dir}/jittering" "$@" & |
| done |
