SPEC CPU2006 Platform Settings for Inspur Platform systems

Operating System Tuning Parameters

Install only the relevant files

Select "minimal" mode when installing the operating system,so that many services are not installed,this will reduce the consumption of resources by the operating system itself. And then install necessary files of cpu test by yum.

SCALING_GOVERNOR

Set this environment variable to "performance" to enable cores to run at performance mode. "scaling_governor" is a configuration file in Linux's "cpufreq" model. There are five mode in "scaling_governor" which are performance, powersave, userspace, ondemand, and conservative. Setting it to "performance" can lock the CPU's frequency at top speed without adjust dynamically.

HUGETLB_MORECORE

Set this environment variable to "yes" to enable applications to use large pages.

LD_PRELOAD=/usr/lib64/libhugetlbfs.so

Setting this environment variable is necessary to enable applications to use large pages.


Firmware / BIOS / Microcode Settings

Hardware Prefetch:

This BIOS option allows the enabling/disabling of a processor mechanism to prefetch data into the cache according to a pattern-recognition algorithm In some cases, setting this option to Disabled may improve performance.Users should only disable this option after performing application benchmarking to verify improved performance in their environment.

Intel Turbo boost Technology:

Enabling this option allows the processor cores to automatically increase its frequency and increasing performance if it is running below power, temperature.

Intel Hyper Threading Technology:

Enabling this option allows to use processor resources more efficiently, enabling multiple threads to run on each core and increases processor throughput, improving overall performance on threaded software.

Memory Frequency:

This BIOS setting allows the memory to be clocked to the highest supported frequency.

VT Support

If virtualization is not used, this option should be set to "Disabled", this can result in slight performance liftings and energy savings

C1E Support
Enabling this option which is the default allows the processor to transmit to its minimum frequency when entering the power state C1. If the switch is disabled the CPU stays at its maximum frequency in C1. Because of the increase of power consumption users should only select this option after performing application benchmarking to verify improved performance in their environment.
QPI Link Frequency Select
This switch allows the configuration of the QPI link speed. Default is auto, which configures the optimal link speed automatically.