[ubuntu-mono] [Bug 277323] Re: Mono programs produce frequent CPU wakeups (in futex_wait)

[Chris Halse Rogers]

** Summary changed:

- Gnome-Do wakes up the processor too much
+ Mono programs produce frequent CPU wakeups (in futex_wait)

** Description changed:

- I love Do, but I think it's waking up the processor too often. That's
- bad because more wakeups = increasing power consumption = global warming
- = reduced battery life on laptops.
+ Bug initially from GNOME Do, but I've been meaning to file something
+ like this for some time.  All mono apps will show up in powertop with
+ lines like:
  
- I'm using Do 0.6.0 (on Intrepid) and PowerTop 1.10 tells me there's
- always 10-20 gnome-do wakeups every second. Only Firefox has a
- consistently higher number of wakeups, and that's running a bunch of
- tabs/extensions.
+ 11.1% ( 21.4)          gnome-do : futex_wait (hrtimer_wakeup)
  
- E.g.   11.1% ( 21.4)          gnome-do : futex_wait (hrtimer_wakeup)
- 
- Can the frequency of this futex wait be reduced? Or removed all together
- somehow?
+ Linked to the upstream bug report.

-- 
Mono programs produce frequent CPU wakeups (in futex_wait)
https://bugs.launchpad.net/bugs/277323
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