2021-07-05 06:50:25 +00:00
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#!/bin/bash
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r_log "sysstat" "Test CPU measurements via iostat"
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TMPFILE=/var/tmp/iostat.cpi
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DISK=$(fdisk -l|grep -Po -m1 '^/dev/[\D]+')
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BLOCKS=4096
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COUNT=20000
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# drop caches
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echo 1 > /proc/sys/vm/drop_caches
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[ -e "$TMPFILE" ] && /bin/rm -f $TMPFILE
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/usr/bin/iostat -c 1 5 > $TMPFILE &
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# wait
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sleep 5
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2021-07-06 20:16:01 +00:00
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/bin/dd if="$DISK" bs=$BLOCKS count=$COUNT 2> /dev/null | sha256sum -b - &> /dev/null
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2021-07-05 06:50:25 +00:00
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# wait
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sleep 5
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CPU_USER_PERCENT=$(awk '$1 ~ /[0-9]/ {$1>a ? a=$1 : $1} END {print int(a)}' $TMPFILE)
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[ "$CPU_USER_PERCENT" -gt 3 ] || { r_log "sysstat" "Why aren't we generating activity..."; }
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r_checkExitStatus $?
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