Fix committed into lp:indicator-power at revision 214, scheduled for
release in indicator-power, milestone Unknown
** Changed in: indicator-power
Status: Confirmed => Fix Committed
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https://bugs.launchpad.net/bugs/1221871
Title:
indicator-power-service is a lightly busy all the time
Status in The Power Indicator:
Fix Committed
Status in “indicator-power” package in Ubuntu:
Triaged
Bug description:
In a vain attempt to reduce power on these phone devices I noticed
that indicator-power-service is using just under 1% of one CPU all the
time.
CPU usage:
PID Process USR% SYS% TOTAL%
1358 indicator-power-serv 0.05 0.04 0.08 (very light load)
It seems to be waiting on poll() on a couple of threads which
cumulatively add up to about 1.68 wakeups a second over a 1 hour
analysis:
Top polling system calls:
PID
1369 indicator-power-serv poll 1.3462 polls/sec
1358 indicator-power-serv poll 0.3376 polls/sec
Total 1.6838 polls/sec
This contributes to a bunch of context switching by these threads:
Context Switches:
PID Process Voluntary Involuntary Total
Ctxt Sw/Sec Ctxt Sw/Sec Ctxt Sw/Sec
1369 indicator-power-serv 10.75 0.15 10.90 (moderate)
1358 indicator-power-serv 3.53 0.07 3.60 (low)
1372 indicator-power-serv 0.00 0.00 0.00 (idle)
Total 14.29 0.22 14.50
[ See the attached log, launchpad formatting sucks ]
I also observed a couple of brk() calls, and a small amount of heap
growth which may indicate it has a small memory leak, but I am
speculating on this.
Attached is a full report from a 1 hour of monitoring indicator-power-
service for reference.
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