I'm not saying that it's not waking up, just pointing out that we have
no way of fixing the source of the wakeups for now. Lowering priority.
** Changed in: location-service (Ubuntu)
Status: Confirmed => Triaged
** Changed in: location-service (Ubuntu)
Importance: High => Medium
** Changed in: location-service (Ubuntu)
Assignee: Thomas Voß (thomas-voss) => (unassigned)
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https://bugs.launchpad.net/bugs/1350871
Title:
location service is waking up at 10Hz causing possible unwanted
wakeups
Status in The Ubuntu Power Consumption Project:
New
Status in location-service package in Ubuntu:
Triaged
Bug description:
I've observed that location service is waking up ~10 times per second
due to a 100ms sleep
ps -ax | grep 2295
2295 ? Ssl 0:00 /usr/bin/ubuntu-location-serviced --bus system
--provider gps::Provider
eventstat shows it's the top waking userspace process on the phone:
root@ubuntu-phablet:/# eventstat 300 1
Event/s PID Task Init Function Callback
9.99 2304 ubuntu-location hrtimer_start_range_ns hrtimer_wakeup
health-check shows that this is occuring in a 100ms nanosleep() system
call.
Attached is the output from health-check. Is is possible to use a
select() or poll() rather than a 10Hz non-blocking delay loop to
reduce polling wakeups?
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