How to disable Dynamic Frequency Modulation of CPU 1. how can I check whether the dynamic frequency modulation function www.2cto.com is enabled on the current OS and whether the clock speed of all cores is the maximum CPU speed: grep-E '^ model name | ^ cpu MHz'/proc/cpuinfo can also be used through: lsmod | grep cpufreq_ondemand to check whether the cpufreq_ondemand module is loaded or through: service -- status-all | grep cpuspeed to check whether the cpuspeed service is enabled. 2. how to disable the dynamic frequency modulation function of CPU 1: Turn off this function in BIOS www.2cto.com and enter the BIOS after the startup, find the performance option, in the speedset sub-option, you will see your CPU Dynamic Frequency Modulation Method 2: Disable The cpuspeed service cpuspeed st in the OS Op chkconfig -- del cpuspeed: After the above two methods are used, we recommend that you use the method described in 1 to confirm that dynamic frequency modulation has been disabled!