Xeon E5 cpu work in low status

[Adrian Chadd]

On 4 November 2013 14:24, Konstantin Belousov <kostikbel at gmail.com> wrote:

> My Intel board DQ67OW starts with the fixed CPU speed, which is
> configurable in BIOS. Unless OS starts managing the frequency with the
> cpufreq and powerd, CPU is locked to the pre-configured speed. It was
> not easy to understand why my single-user memory b/w benchmarks show
> half of the expected throughput for the cache, until I found the setting
> and found that Intel defaults to 1/2 of the marketing frequency.
>
> For my board, it is Performance->Processor Overrides->Maximum Non-Turbo
> Ratio.  It was set to 17, normal CPU mode is 34, turbo is 38 max.

Does powerd throttle each individual core like this? I don't have
anything laptop-y that's recent enough for that to matter.



-adrian