Mailinglist Archive: opensuse-bugs (3543 mails)

< Previous Next >
[Bug 717454] Power consumption of 3.0.4 kernel is 10-20W higher than 2.6.37 on new i7 based SandyBridge processors

https://bugzilla.novell.com/show_bug.cgi?id=717454

https://bugzilla.novell.com/show_bug.cgi?id=717454#c9


Richard Brown <rdb@xxxxxxxxx> changed:

What |Removed |Added
----------------------------------------------------------------------------
Status|NEEDINFO |NEW
InfoProvider|rdb@xxxxxxxxx |

--- Comment #9 from Richard Brown <rdb@xxxxxxxxx> 2011-09-17 09:51:18 UTC ---
On my X220 (Sandybridge CPU) with 2.6 (Stock oS 11.4 kernel) running powertop
in runlevel 1, I see power consumption as previously reported (11W) with the
CPU spending almost all of its time in C4 state (99-101% according to powertop)

Changing to kernel 3.0 (Tumbleweed version) running powertop in rl 1, power
consumption is as previously reported (17W).
powertop reports that the CPU is spending just as much of its time in C4 state
(99-101%)

Looks like the power drain is coming from something other than the CPU, or
powertop is lying.

Will be doing these same tests on my Gulftown hardware later today when I'm
back at home

--
Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug.

< Previous Next >
References