OK, I understand. My concern is that we do have a lot of processes doing
this kind of polling, so the cumulative effect of the same root issue is
causing a lot of unwanted wakeups on a "so called" idle system.
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This shows up in the daily testing too:
http://ci.ubuntu.com/power/eventstat/image/3138/machine/6/task
/indicator-messages-service/details/
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Public bug reported:
I've observed that an "idle" indicator-messages-services is waking up
every 4 seconds on a poll() and doing two inotify_add_watch() calls on
paths that don't exist, which wastes power on devices such as phones.
strace shows:
clock_gettime(CLOCK_MONOTONIC, {10117, 224455428})
** Summary changed:
- hud-service is eating up 100% of one of my CPUs in a pool loop
+ hud-service is eating up 100% of one of my CPUs in a poll loop
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Public bug reported:
unity-scope-loader is adding the SAME inotify watches regularly every 4
seconds:
Inotify watches added:
PID Process Rate/Sec File
3495 unity-scope-loader 0.250
/usr/share/upstart/xdg/menus/unity-lens-applications-merged
3495 unity-scope-loader 0
What I am seeing is the following poll:
poll([{fd=13, events=POLLIN}], 1, 18813) = 1 ([{fd=13, revents=POLLIN}])
poll([{fd=13, events=POLLIN}], 1, 18813) = 1 ([{fd=13, revents=POLLIN}])
poll([{fd=13, events=POLLIN}], 1, 18813) = 1 ([{fd=13, revents=POLLIN}])
write(3, "\1\0\0\0\0\0\0\0", 8)
Hi Pete, how do I look that up?
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https://bugs.launchpad.net/bugs/1300722
Title:
hud-service is eating up 100% of one of my CPUs in a pool loop
Status in “hud” package in Ubuntu:
Public bug reported:
hud-service is polling like crazy:
Context Switches:
PID ProcessVoluntary Involuntary Total
Ctxt Sw/Sec Ctxt Sw/Sec Ctxt Sw/Sec
2295 hud-service 46084.6342.94 46127.58 (very high)
2325 hud-se
** Changed in: ubuntu-power-consumption
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1234289
Title:
account
** Changed in: ubuntu-power-consumption
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1199877
Title:
unit
OK, it's got worse in Trusty, now it's polling even more directories
that don't exist:
inotify_add_watch(9, "/usr/local/share/applications",
IN_MODIFY|IN_ATTRIB|IN_CLOSE_WRITE|IN_MOVED_FROM|IN_MOVED_TO|IN_CREATE|IN_DELETE|IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT|IN_ONLYDIR)
= -1 ENOENT (No such fi
running strace on one of the treads shows the culprit:
poll([{fd=4, events=POLLIN}, {fd=8, events=POLLIN}], 2, 3998) = 0 (Timeout)
inotify_add_watch(8, "/etc/gdm",
IN_MODIFY|IN_ATTRIB|IN_CLOSE_WRITE|IN_MOVED_FROM|IN_MOVED_TO|IN_CREATE|IN_DELETE|IN_DELETE_SELF|IN_MOVE_SELF|IN_UNMOUNT|IN_ONLYDIR)
** Also affects: zeitgeist (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/934156
Title:
zeitgeist
Thanks, this is noticeably much improved!
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https://bugs.launchpad.net/bugs/1238043
Title:
indicator-datetime-service is opening
Sebastien, is their a way to track the offending client app down? I'd
like to get to the root of this issue.
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3.8.6-0ubuntu2 + 13.01.0+13.10.20131031-0ubuntu1, can't reproduce heavy
CPU load (thanks!) but I do still see some heap growth. I ran gimp,
libreoffice, firefox for 296 seconds and observed:
heap change:
88 brk() calls, growth of 11496K, or ~38.75K/sec growth
CPU usage:
4.38% (3.95% user,
@Charles,
1. Is there a .deb I can test to verify this?
2. the i386 latest build of heath-check now does system call tracing correctly,
so that may be helpful for checking the fix.
Colin
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Installed indicator-appmenu 13.01.0+13.10.20131031-0ubuntu1, rebooted,
quick test again, still see:
Change in memory (K/second):
PID Process TypeSize RSS PSS
3170 unity-panel-service Stack 0.00 0.19 0.19 (growing
slowly)
3170 unity-panel-se
By the look of things, after all the submenus are rendered the memory
consumed by unity-panel-service seems to stabilize, so I am guessing it
cache's the menus because after several invocations of the the
applications I can't see a great deal more memory being allocated. Is
this the intention? If
I don't see the CPU being pegged and it isn't leaking memory so badly.
There is still some memory leakage. I ran health-check (from my PPA,
ppa:colin-king/white) against it for over 10 minutes using applications
such as LibreOffice, Gimp, Firefox and still observed quite a lot of
brks() occurring:
I ran health-check (ppa:colin-king/white) against unity-panel-service
while navigating menus on gimp and thunderbird for 60 seconds and I
observed on average over 60 seconds:
about 53 minor page faults per second,
nearly 1900 context switches a second,
over 260 recvfrom() syscalls per second,
Public bug reported:
In an attempt to reduce unnecessary frequent periodic file access to
save power, I noticed that indicator-datetime-service is opening and
closing /etc/localtime every 5 seconds on my desktop and not apparently
reading this file. On the ubuntu phone it is doing the same thing
Public bug reported:
Over the past few months accounts-daemon has been increasing the number
of wakeup events it generates, see:
http://reports.qa.ubuntu.com/power/eventstat/image/2736/machine/1/task
/accounts-daemon/details/
In April 2013 it was averaging about 13.5 wakeups per minute, now it h
Public bug reported:
Running today's image on a Samsung Galaxy Nexus I am observing frequent
regular periodic polling by accounts-daemon on an idle system. Running
strace on it I see:
poll([{fd=4, events=POLLIN}, {fd=7, events=POLLIN}], 2, 537) = 0 (Timeout)
clock_gettime(CLOCK_MONOTONIC, {12270
I've traced this and can see ~1MB of brk() heap increase per invocation
of gedit. So this is really leaking badly.
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Polling system call analysis:
unity-panel-service (2776), poll:
2295 immediate timed out calls with zero timeout (non-blocking peeks)
37 repeated timed out polled calls with non-zero timeouts (light
polling)
1322 repeated immediate timed out polled calls with zero timeouts
Also, unity-panel-service's heap is growing quite rapidly too:
Per Process Memory (K):
PID Process TypeSize RSS PSS
2776 unity-panel-service Stack 16520 108 108
2776 unity-panel-service Heap 429272 74504 74504
2776 unity-pan
Public bug reported:
When opening a libreoffice calc menu nothing happens for 8 seconds.
Using "top" one can observe that unity-panel-service is pegging one of
my CPUs at 100%. This is 100% repeatable. Just start libreoffice,
open the menu. Opening the menu thereafter is often faster. But from
** Tags added: mobile-power-consumption
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https://bugs.launchpad.net/bugs/1221871
Title:
indicator-power-service is a lightly busy all the time
Status in Touch Previe
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