Pat, I use something such like the following awk script to parse the
data:
{
if ((NF == 5) && ($4 != "PID")) {
total[$4] += $1
usr[$4] += $2
sys[$4] += $3
cmd[$4] = $5
}
if ((NF == 5) && ($4 == "PID"))
n++
}
END {
for (i in total)
printf "%10.2f %10.2f %10.2f %s\n", total[i], usr[i], sys[i],
cmd[i]
}
awk -f cpustat.awk < cpustat.log | sort -nr | head -20
20400.32 19276.85 1123.57 /usr/lib/upower/upowerd
3503.49 2570.89 932.58 unity8
3243.72 870.17 2373.55 cpustat
2911.39 1710.02 1201.39 /lib/systemd/systemd-udevd
2207.87 182.06 2025.80 /system/bin/mpdecision
2133.32 2012.62 120.71 dbus-daemon
2125.58 1751.23 374.36 messaging-app
1280.77 0.00 1280.77 [mmcqd/0]
675.34 0.00 675.34 [jbd2/mmcblk0p23]
449.83 159.82 289.96 unity-system-compositor
412.58 312.51 100.07 NetworkManager
372.17 206.53 165.64 init
355.62 259.23 96.40 /sbin/init
323.53 0.00 323.53 [MC_Thread]
315.88 278.62 37.27 /usr/bin/powerd
310.32 268.82 41.50
/usr/lib/arm-linux-gnueabihf/indicator-power/indicator-power-service
267.14 237.61 29.54 maliit-server
228.89 12.30 216.59 /sbin/healthd
200.54 169.84 30.70
/custom/vendor/here/location-provider/bin/arm-linux-gnueabihf/posclientd
182.56 14.76 167.79 /init
So it does seem that upowerd is consuming the most cycles. Attached is
a spreadsheet and a graph from the raw stats
** Attachment added: "upowerd-cpu-utilisation.ods"
https://bugs.launchpad.net/ubuntu/+source/powerd/+bug/1372413/+attachment/4315479/+files/upowerd-cpu-utilisation.ods
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https://bugs.launchpad.net/bugs/1372413
Title:
Extensive battery drain on RTM
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