#!/bin/bash
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#
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# oe-time-dd-test records how much time it takes to
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# write <count> number of kilobytes to the filesystem.
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# It also records the number of processes that are in
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# running (R), uninterruptible sleep (D) and interruptible
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# sleep (S) state from the output of "top" command.
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# The purporse of this script is to find which part of
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# the build system puts stress on the filesystem io and
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# log all the processes.
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usage() {
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echo "$0 is used to detect i/o latency and runs commands to display host information."
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echo "The following commands are run in order:"
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echo "1) top -c -b -n1 -w 512"
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echo "2) iostat -y -z -x 5 1"
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echo "3) tail -30 tmp*/log/cooker/*/console-latest.log to gather cooker log."
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echo " "
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echo "Options:"
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echo "-c | --count <amount> dd (transfer) <amount> KiB of data within specified timeout to detect latency."
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echo " Must enable -t option."
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echo "-t | --timeout <time> timeout in seconds for the <count> amount of data to be transferred."
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echo "-l | --log-only run the commands without performing the data transfer."
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echo "-h | --help show help"
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}
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run_cmds() {
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echo "start: top output"
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top -c -b -n1 -w 512
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echo "end: top output"
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echo "start: iostat"
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iostat -y -z -x 5 1
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echo "end: iostat"
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echo "start: cooker log"
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tail -30 tmp*/log/cooker/*/console-latest.log
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echo "end: cooker log"
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}
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if [ $# -lt 1 ]; then
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usage
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exit 1
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fi
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re_c='^[0-9]+$'
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#re_t='^[0-9]+([.][0-9]+)?$'
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while [[ $# -gt 0 ]]; do
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key="$1"
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case $key in
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-c|--count)
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COUNT=$2
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shift
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shift
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if ! [[ $COUNT =~ $re_c ]] || [[ $COUNT -le 0 ]] ; then
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usage
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exit 1
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fi
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;;
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-t|--timeout)
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TIMEOUT=$2
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shift
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shift
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if ! [[ $TIMEOUT =~ $re_c ]] || [[ $TIMEOUT -le 0 ]] ; then
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usage
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exit 1
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fi
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;;
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-l|--log-only)
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LOG_ONLY="true"
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shift
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shift
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;;
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-h|--help)
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usage
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exit 0
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;;
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*)
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usage
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exit 1
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;;
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esac
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done
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if [ "$LOG_ONLY" = "true" ] ; then
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uptime
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run_cmds
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exit
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fi
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if [ -z ${TIMEOUT+x} ] || [ -z ${COUNT+x} ] ; then
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usage
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exit 1
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fi
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uptime
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echo "Timeout used: ${TIMEOUT}"
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timeout ${TIMEOUT} dd if=/dev/zero of=oe-time-dd-test.dat bs=1024 count=${COUNT} conv=fsync
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if [ $? -ne 0 ]; then
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run_cmds
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fi
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