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Message #87398
[Bug 1470750] Re: scoperegistry uses 45% CPU after applying updates from the store, draining battery quickly
Ok, I was able to reproduce by applying all available updates on top of
image 55.
Never mind the question about logs, nothing unusual there. Some of the
updates are for scopes and the logs show that they are uninstalled and
the installed again, e.g.
[2015-07-02 14:54:53.960533] INFO: Registry: ScopesWatcher: scope: "com.canonical.scopes.bbc_bbc" uninstalled from: "/home/phablet/.local/share/unity-scopes//com.canonical.scopes.bbc_bbc_1.8.3"
[2015-07-02 14:54:53.982678] INFO: Registry: ScopesWatcher: scope: "com.canonical.scopes.bbc_bbc" installed to: "/home/phablet/.local/share/unity-scopes//com.canonical.scopes.bbc_bbc_1.8.4"
I collected backtrace of all threads, unfortunately the overlay ppa
doesn't offer packages with debug symbols... I'll try to rebuild a
version with symbols on my phone.
After reproducing it, scope-registry keeps consuming around 50% of the
cpu but apart from that it seems to be working correctly (scopes are
started on demand and they work).
** Attachment added: "Backtrace of all treads (without symbols)"
https://bugs.launchpad.net/canonical-devices-system-image/+bug/1470750/+attachment/4423483/+files/threads
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https://bugs.launchpad.net/bugs/1470750
Title:
scoperegistry uses 45% CPU after applying updates from the store,
draining battery quickly
Status in the base for Ubuntu mobile products:
Confirmed
Status in unity-scopes-api package in Ubuntu:
New
Bug description:
current build number: 44
device name: arale
channel: ubuntu-touch/rc-proposed/meizu.en
last update: 2015-07-02 07:10:44
version version: 44
version ubuntu: 20150702
version device: 20150608-6e66f3c
version custom: 20150602-731-5-32
Suddenly this morning, the battery started discharging very quickly,
'top' revealed that scoperegistry was using around 45% CPU steadily.
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
2207 phablet 20 0 377996 9576 6200 S 46,0 0,5 67:34.54 scoperegistry
Around the same time that the battery started dropping, I applied all the updates from the store, in the list of apps to update were:
- Terminal
- BBC Sport
- BBC
- Euronews
- Engadget
- Cnet
I pressed 'Update all' and waited until it's done then closed system-
settings.
There is no crash file corresponding to this event.
I reproduced it on ubuntu-touch/rc-proposed/bq-aquaris.en/krillin #55
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References