Hello,
I am seeing messages like this quite often on our R720s in dmesg:
CPU16: Core power limit notification (total events = 1)
Do you think that's related to your problem?
Brice
Le 03/09/2013 14:44, Bill Wichser a écrit :
> The solution appears to be BIOS configuration.
>
> We had:
>
Yes. Especially when you do not see the power limit normal following
it. This says that the cores are limited (by power) but never actually
receiving enough to then say that they are normal again.
We'd see both on ramp up to C0 state. limited then normal; limited then
normal.
Bill
On 09/03
The solution appears to be BIOS configuration.
We had:
< SysProfile=perfoptimized
< ;ProcPwrPerf=maxperf
< ;ProcC1E=disable
< ;ProcCStates=disable
And changed to:
---
> SysProfile=custom
> ProcPwrPerf=osdbpm
> ProcC1E=enable
> ProcCStates=enable
Then added
modprobe acpi_cpufreq
And we move
