How to configure CISCO C240 M4SX to run in C0 mode exclusively

[suhagdesai1]

Hi All,

I have CISCO c240 M4SX server. We are having requirement to  configure CISCO C240 M4SX to run in C0 mode exclusively. What are the setting in BIOS to support this?

Regards,

Suhag Desai

[Kirk J]

Take a look at http://www.cisco.com/c/en/us/products/collateral/servers-unified-computing/ucs-c-series-rack-servers/whitepaper_C11-733130.html as this covers the power and performance tuning configs for cstates and should answer your question.

Processor C3 and C6 States

C3 and C6 are power-saving halt and sleep states that a CPU can enter when it is not busy. Unfortunately, it can take some time for the CPU to leave these states and return to a running condition. If you are concerned about performance (for all but latency-sensitive single-threaded applications), and if you have the option, disable anything related to C states.

Power Technology Setting

For best performance, always set the power technology option to Custom. If it is not set to Custom, the individual settings for Intel SpeedStep and Turbo Boost and the C6 power state are ignored.

Most of these will be under the F2 Setup, Advanced Tab, Processor Configuration, Processor Power Management configuration menu.

Thanks,

Kirk..

[suhagdesai1]

Thank You.

I already tried setting mentioned in the link provided in your post but it did not worked. Still, when I see C1 and C2 in Perfmon of the OS-windows 2012 R2, it is still showing that C2 state being utilized. But we want C0/C1 State to be used.