http://bugzilla.kernel.org/show_bug.cgi?id=12651


[email protected] changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|acpi_power-proces...@kernel-|[email protected]
                   |bugs.osdl.org               |m
             Status|NEW                         |ASSIGNED




------- Comment #4 from [email protected]  2009-02-09 14:19 -------
Vladimir.

Nice detective work :-).

Looks like "nohz" is not correctly turning off hz on one of the CPUs here. As a
result, ondemand thinks CPU is busy. Even if ondemand goes to lower freq, you
may still be spending more power due to constant ticks on this CPU0. So, the
problem may be bigger than ondemand itself.

Can you look at /proc/interrupts, specifically IRQ 0: and LOC lines and see how
many interrupts are going to each CPU. Also see whether that is changing with
.27 and .28


-- 
Configure bugmail: http://bugzilla.kernel.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug, or are watching the assignee.
You are the assignee for the bug, or are watching the assignee.

------------------------------------------------------------------------------
Create and Deploy Rich Internet Apps outside the browser with Adobe(R)AIR(TM)
software. With Adobe AIR, Ajax developers can use existing skills and code to
build responsive, highly engaging applications that combine the power of local
resources and data with the reach of the web. Download the Adobe AIR SDK and
Ajax docs to start building applications today-http://p.sf.net/sfu/adobe-com
_______________________________________________
acpi-bugzilla mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/acpi-bugzilla

Reply via email to