32 lines
720 B
Bash
32 lines
720 B
Bash
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#!/bin/bash
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r_log "sysstat" "Test basic iostat disk measurements"
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TMPFILE=/var/tmp/iostat.disk
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BLOCKS=4096
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COUNT=10100
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SUM="$(( BLOCKS * COUNT / 1024 ))"
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DISK="$(fdisk -l | grep -Po -m1 '^/dev/[\D]+')"
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[ -e $TMPFILE ] && /bin/rm -f $TMPFILE
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# Clear out page cache
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echo 1 > /proc/sys/vm/drop_caches
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r_log "sysstat" "Running iostat on $DISK"
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/usr/bin/iostat -dkx 1 5 "$DISK" > $TMPFILE &
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# wait
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sleep 4
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# Generate traffic
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/bin/dd if="$DISK" of=/dev/null bs=$BLOCKS count=$COUNT &> /dev/null
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# wait
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sleep 6
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READBYTES=$(awk '$6 ~ /[0-9]/ {NR>1 && sum+=$6} END {print int(sum)}' $TMPFILE)
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[ "$READBYTES" -ge "$SUM" ] || { r_log "sysstat" "It doesn't look like we got a lot of traffic. Why?"; }
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r_checkExitStatus $?
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