https://bugzilla.suse.com/show_bug.cgi?id=1234619 Bug ID: 1234619 Summary: CPU reporting and using incorrect max freq Classification: openSUSE Product: openSUSE Distribution Version: Leap 15.6 Hardware: x86-64 OS: Other Status: NEW Severity: Normal Priority: P5 - None Component: Kernel Assignee: kernel-bugs@opensuse.org Reporter: ez2blost@yahoo.com QA Contact: qa-bugs@suse.de Target Milestone: --- Found By: --- Blocker: --- On an Intel i9-13900HX, /sys/devices/system/cpu/cpu*/cpufreq/cpuinfo_max_freq reports the same frequency as base_frequency. E.g., cat /sys/devices/system/cpu/cpu0/cpufreq/{base_frequency,cpuinfo_max_freq} 2200000 2200000 By default the maximum scaling frequency for performance is set to the cpuinfo_max_freq cat /sys/devices/system/cpu/cpu1/cpufreq/scaling_max_freq 2200000 However the maximum frequency for cpu1 is 5400000 as can be seen if a higher valuer is written to scaling_max_freq: echo 10000000 >| /sys/devices/system/cpu/cpu1/cpufreq/scaling_max_freq ; cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq 5400000 By default the cpu frequency never exceeds 2.2Ghz resulting in poor performance. A workaround is to set the maximum scaling frequency in the TLP configuration file (if tlp is used), e.g. Echo "CPU_SCALING_MAX_FREQ_ON_AC=5400000" >> /etc/tlp.d/50.local.conf This is partial fix because other software, such as NVIDIA power management features, can reset the scaling_max_frequency to cpuinfo_max_frequency, and cannot be enabled easily without a performance hit. -- You are receiving this mail because: You are the assignee for the bug.