toolkit/func/core/pkg_sysstat/12-cpu-io.sh
2021-07-04 23:50:25 -07:00

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#!/bin/bash
r_log "sysstat" "Test CPU measurements via iostat"
TMPFILE=/var/tmp/iostat.cpi
DISK=$(fdisk -l|grep -Po -m1 '^/dev/[\D]+')
BLOCKS=4096
COUNT=20000
# drop caches
echo 1 > /proc/sys/vm/drop_caches
[ -e "$TMPFILE" ] && /bin/rm -f $TMPFILE
/usr/bin/iostat -c 1 5 > $TMPFILE &
# wait
sleep 5
/bin/dd if=$DISK bs=$BLOCKS count=$COUNT 2> /dev/null | sha256sum -b - &> /dev/null
# wait
sleep 5
CPU_USER_PERCENT=$(awk '$1 ~ /[0-9]/ {$1>a ? a=$1 : $1} END {print int(a)}' $TMPFILE)
[ "$CPU_USER_PERCENT" -gt 3 ] || { r_log "sysstat" "Why aren't we generating activity..."; }
r_checkExitStatus $?