Description of problem: 不管是否打开CPU睿频 #打开 echo 0 > /sys/devices/system/cpu/intel_pstate/no_turbo #关闭 echo 1 > /sys/devices/system/cpu/intel_pstate/no_turbo 4.19 x86内核上发现cpu频率不稳定，使用三台机器发现都是一样的 Version-Release number of selected component (if applicable): How reproducible: Steps to Reproduce: Actual results: cpu频率不稳定，以cpu0为例： [root@i22e11409 bin]# cat /sys/devices/system/cpu/cpu0/cpufreq/*_cur_freq 1662040 [root@i22e11409 bin]# cat /sys/devices/system/cpu/cpu0/cpufreq/*_cur_freq 1327543 [root@i22e11409 bin]# cat /sys/devices/system/cpu/cpu0/cpufreq/*_cur_freq 1192405 [root@i22e11409 bin]# cat /sys/devices/system/cpu/cpu0/cpufreq/*_cur_freq 1687081 Expected results: Additional info:
补充下机器信息： # uname -a Linux i22e11410.eu95sqa 4.19.91-231.git.533d40934.an8.x86_64 #1 SMP Mon Feb 14 13:30:06 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux # cat /etc/os-release NAME="Anolis OS" VERSION="8.2" ID="anolis" ID_LIKE="rhel fedora centos" VERSION_ID="8.2" PLATFORM_ID="platform:an8" PRETTY_NAME="Anolis OS 8.2" ANSI_COLOR="0;31" HOME_URL="https://openanolis.cn/" # lscpu Architecture: x86_64 CPU op-mode(s): 32-bit, 64-bit Byte Order: Little Endian CPU(s): 96 On-line CPU(s) list: 0-95 Thread(s) per core: 2 Core(s) per socket: 24 Socket(s): 2 NUMA node(s): 1 Vendor ID: GenuineIntel CPU family: 6 Model: 85 Model name: Intel(R) Xeon(R) Platinum 8163 CPU @ 2.50GHz Stepping: 4 CPU MHz: 1606.574 CPU max MHz: 3100.0000 CPU min MHz: 1000.0000 BogoMIPS: 5000.00 Virtualization: VT-x L1d cache: 32K L1i cache: 32K L2 cache: 1024K L3 cache: 33792K NUMA node0 CPU(s): 0-95 Flags: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc art arch_perfmon pebs bts rep_good nopl xtopology nonstop_tsc cpuid aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid dca sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb cat_l3 cdp_l3 invpcid_single intel_ppin ssbd mba ibrs ibpb stibp tpr_shadow vnmi flexpriority ept vpid ept_ad fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms invpcid rtm cqm mpx rdt_a avx512f avx512dq rdseed adx smap clflushopt clwb intel_pt avx512cd avx512bw avx512vl xsaveopt xsavec xgetbv1 xsaves cqm_llc cqm_occup_llc cqm_mbm_total cqm_mbm_local dtherm ida arat pln pts pku ospke md_clear flush_l1d