thin burrow
CPU: i5 12500H
kernel CPU information:
$ dmesg | grep -E "cpu|CPU" [ 0.000000] KERNEL supported cpus: [ 0.000000] [Firmware Bug]: TSC ADJUST: CPU0: -3131894793 force to 0 [ 0.032455] smpboot: Allowing 16 CPUs, 0 hotplug CPUs [ 0.032493] setup_percpu: NR_CPUS:8192 nr_cpumask_bits:16 nr_cpu_ids:16 nr_node_ids:1 [ 0.033471] percpu: Embedded 86 pages/cpu s229376 r8192 d114688 u524288 [0.033476] pcpu-alloc: s229376 r8192 d114688 u524288 alloc=1*2097152 [0.033478] pcpu-alloc: [0] 00 01 02 03 [0] 04 05 06 07 [0.033484] pcpu-alloc: [0] 08 09 10 11 [0] 12 13 14 15 [0.076390] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=16, Nodes=1 [0.085392] rcu: RCU restricting CPUs from NR_CPUS=8192 to nr_cpu_ids=16. [0.085396] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=16 [0.095020] CPU0: Thermal monitoring enabled (TM1) [0.095022] x86/cpu: User Mode Instruction Prevention (UMIP) activated [0.095961] smpboot: CPU0: 12th Gen Intel(R) Core(TM) i5-12500H (family: 0x6, model: 0x9a, stepping: 0x3) [0.095961] RCU Tasks: Setting shift to 4 and lim to 1 rcu_task_cb_adjust=1 rcu_task_cpu_ids=16. [0.095961] RCU Tasks Rude: Setting shift to 4 and lim to 1 rcu_task_cb_adjust=1 rcu_task_cpu_ids=16. [0.095961] RCU Tasks Trace: Setting shift to 4 and lim to 1 rcu_task_cb_adjust=1 rcu_task_cpu_ids=16. [0.095961] core: cpu_core PMU driver: [0.097347] smp: Bringing up secondary CPUs ... [0.097421] .... node #0, CPUs: #2 #4 #6 #8 #9 #10 #11 #12 #13 #14 #15 [0.007884] core: cpu_atom PMU driver: PEBS-via-PT [0.111023] smp: Brought up 1 node, 16 CPUs [0.115558] cpuidle: using governor ladder [0.115558] cpuidle: using governor menu [0.274341] ACPI: _OSC evaluated successfully for all CPUs [1.051767] ledtrig-cpu: registered to indicate activity on CPUs [1.106728] cryptd: max_cpu_qlen set to 1000
power-profiles-daemon does not allow any CPU cores to go above 2.5GHz on Performance. Manually setting the performance governor fixes this. What's the cause?