in image smoke testing for touch we have a test called "systemsettle" it
checks the idle state of the system before and after a test run by
iterating over the "top" values (it doesnt actually use top but reads
directly from /proc) ten times ... if the average idle value for these
ten runs is not above 97.5% the test is considered a failure.
on the krillin device the systemsettle test constantly fails (while it
passes on mako). looking through the logs we found that upowerd,
indicator-power, powerd and specifically dbus-daemon seem to always be
the top consumers causing the failure of the test. for now we decided to
give the test a little more wiggle room by lowering the threshold by 1%
but i think it is very valuable to get the described behavior of this
bug fixed in the RTM touch image which IMHO will likely make the dbus
noise be lower overall.
Thus this bug should be on the critical fixes list (the so called
"olli's list") for RTM.
** Also affects: powerd (Ubuntu RTM)
Importance: Undecided
Status: New
** Changed in: powerd (Ubuntu RTM)
Status: New => Confirmed
** Changed in: powerd (Ubuntu RTM)
Importance: Undecided => High
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Touch seeded packages, which is subscribed to powerd in Ubuntu.
https://bugs.launchpad.net/bugs/1387810
Title:
device_changed callback does unnecessary work
Status in “powerd” package in Ubuntu:
New
Status in “powerd” package in Ubuntu RTM:
Confirmed
Bug description:
up_device_changed_cb iterates over all devices every time it's called.
It is passed the device so this is unnecessary work and will result in
a lot of dbus traffic. You should just look at the device which you've
been told has changed.
With https://code.launchpad.net/~pitti/powerd/upower0.99/+merge/240141
we're getting upower 0.99 support. One of the new additions to the 1.0
API you get with this version is proper notify signals for properties
on UpClient and UpDevice. powerd should be refactored to only listen
to property changes in the properties it is interested in. This will
result in more efficient code and a process that is only woken up when
it needs to be, and it will be nicer as it will then be properly event
driven.
ProblemType: Bug
DistroRelease: Ubuntu 14.10
Package: powerd (not installed)
ProcVersionSignature: Ubuntu 3.16.0-23.31-generic 3.16.4
Uname: Linux 3.16.0-23-generic x86_64
ApportVersion: 2.14.7-0ubuntu8
Architecture: amd64
CurrentDesktop: Unity
Date: Thu Oct 30 17:05:13 2014
InstallationDate: Installed on 2012-10-07 (752 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Beta amd64 (20121007)
SourcePackage: powerd
UpgradeStatus: Upgraded to utopic on 2013-05-07 (541 days ago)
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