在做一些CPU测试的时候，总会发现结果不是很稳定，分析可能是Linux下系统自动开启了CPU scaling, 也就是根据系统运行情况改变CPU主频，这样我们无法测试到可靠的结果，于是找到了一个关闭scaling并且限制CPU主频的方法。查看当前CPU主频情况。更改上述数值，可以将CPU主频限制在想要的数值。
$ sudo apt-get install cpufrequtils $ cpufreq-info 查看当前CPU主频情况。 $ for x in /sys/devices/system/cpu/*/cpufreq/; do echo 3500000 | sudo tee $x/scaling_max_freq; done 更改上述数值,可以将CPU主频限制在想要的数值。
调节器即Governor,用它来控制CPU频率。可选的有 内核模块调节器名称功能 cpufreq_ondemandondemand按需调节,内核提供的功能,不是很强大,但有效实现了动态频率调节 cpufreq_powersavepowersave省电模式,通常以最低频率运行, cpufreq_userspaceuserspace用户模式,一些调频工具软件需要在此模式下才能运行 cpufreq_conservativ...
CPU speed. The term 'CPU speed' is used in PSoC4000S data sheet and it's not exactly clear to me what this means. For PSoC4000S devices with max. CPU speed of 24MHz, which clock is limited to 24MHz? Clock frequency of IMO is max. 24MHz Clock frequency of HFCLK is max. 24 ...
A method of automatic overclocking of a silicon part or chip, such as a central processing unit (CPU) is disclosed. A range of clock frequencies of both the CPU and a cache of a computer system are tested, with parameters being monitored, safety limits of the computer system being ensured...
NXP MCXN236 是一款高效能的 32 位元 ARM Cortex-M33 微控制器,它具有高達 150 MHz 的 CPU 運算速度,並擁有 1 MB 的 Flash 和 352 KB 的ECC RAM,內建 Smart DMA 技術,可提升數據傳輸效率,它還具備 8 組 Flexcomms 每組皆可宣告為 SPI、I2C、UART 功能,且支援 High Speed USB、2 組 Flex CAN FD、...
System and apparatus for adjusting a clock speed b 优质文献 相似文献Method and apparatus for changing microcode to be executed in a processor A Central Processing Unit (CPU) hotpatch circuit compares the run-time instruction stream against an internal cache. The internal cache stores embedded memory...
Systems with 256 CPU threads - IOMMU configuration# For systems that have 256 logical CPU cores or more (e.g., 64-core AMD EPYC™ 7763 in a dual-socket configuration and SMT enabled), setting the input-output memory management unit (IOMMU) configuration to “disabled” can limit the numb...
Why does /proc/cpuinfo reports reduced clock speed on RHEL8.5 as compared to RHEL8.4 when system booted with "intel_pstate=disable"? RHEL 8.4 Raw processor : 0 cpu MHz : 2310.949 processor : 1 cpu MHz : 2299.749 processor : 2 cpu MHz : 2303.620 processor : 3 cpu MHz : 2299.771 proces...
cpu Run the CPU assessment. mem Run the system memory assessment. d3d Run the d3d assessment (Note that the d3d assessment no longer runs the workload. For backward compatibility, pre-determined scores and metrics are reported.) disk Run the storage assessment ...