SPEC CPU2017 Platform Settings for ZTE Systems
- cpupower:
-
The OS 'cpupower' utility is used to change CPU power governors settings. Available settings are:
- Performance: Run the CPU at the maximum frequency.
- powersave(default): Run the CPU at the minimum frequency.
- skew_tick:
-
The kernel command line parameter skew_tick helps to smooth jitter on moderate to large systems with latency-sensitive applications running. The skew_tick=1 parameter ensures that the ticks per CPU do not occur simultaneously by making their start times 'skewed'. Skewing the start times of the per-CPU timer ticks decreases the potential for lock conflicts, reducing system jitter for interrupt response times.
- ZNC Mode:
-
ZNC (ZTE Numa Control) mode is the option for setting the numbers of numa nodes per chip. Values for this BIOS option can be: NPS1/NPS2/NPS4/NPS8. Default is NPS2.
- Patrol Scrub:
-
This option allows for correction of soft memory errors. Over the length of system runtime, the risk of producing multi-bit and uncorrected errors is reduced with this option. Values for this BIOS setting can be:
- Enabled(default): Correction of soft memory errors can occur during runtime.
- Disabled: Soft memory error correction is turned off during runtime.
- Hardware Prefetching:
-
This option looks for data streams on the assumption that if the data is requested at address A and A+1, the data will also presumably be required at address A+2. This data is then prefetched into the L2 cache from the main memory. Values for this BIOS setting can be: Enabled/Disabled. Default is Enabled.
- Enable CPPC:
-
CPPC (Collaborative Processor Performance) is the ACPI spec describes a mechanism for the OS to manage the performance of a logical processor on a contiguous and abstract performance scale. CPPC exposes a set of registers to describe abstract performance scale, to request performance levels and to measure per-cpu delivered performance.
Values for this BIOS setting can be: Enabled/Disabled. Default is Enabled.