22.04 performance

[Jerry Geis]

On Wed, Sep 28, 2022 at 11:45 PM Ralf Mardorf via ubuntu-users <
ubuntu-users at lists.ubuntu.com> wrote:

> On Wed, 2022-09-28 at 14:42 -0400, Jerry Geis wrote:
> > echo performance | sudo tee
> > /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor -> shows
> > performance
>
> It shows the output of "echo", not the status. To get the status running
>
>   cat /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor
>
> might work.
>
> > But the cpu is still
> > cpu MHz : 2800.000
> > sometimes its 1200.
> >
> > Which may be the normal max
> > model name : Intel(R) Core(TM) i9-7960X CPU @ 2.80GHz
> >
> > How do I get the boost 3400 ?
>
> There's an Arch Wiki in progress. It might be a starting point even for
> Ubuntu:
>
> https://wiki.archlinux.org/title/CPU_frequency_scaling#Scaling_drivers
>
> https://wiki.archlinux.org/title/CPU_frequency_scaling#Configuring_frequency_boosting
>
>
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Doing this  "x86_energy_perf_policy --turbo-enable 0" does nothing.

This does not seem present:
echo 1 > /sys/devices/system/cpu/cpufreq/boost


ls  /sys/devices/system/cpu/cpufreq/
policy0   policy11  policy14  policy17  policy2   policy22  policy25
 policy28  policy30  policy5  policy8
policy1   policy12  policy15  policy18  policy20  policy23  policy26
 policy29  policy31  policy6  policy9
policy10  policy13  policy16  policy19  policy21  policy24  policy27
 policy3   policy4   policy7

This cpu does a Turbo mode but it does not seem available?
Intel(R) Core(TM) i9-7960X CPU @ 2.80GHz

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 d
tes64 monitor ds_cpl vmx est tm2 ssse3 sdbg fma cx16 xtpr pdcm pcid dca
sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave av
x f16c rdrand lahf_lm abm 3dnowprefetch cpuid_fault epb cat_l3 cdp_l3
invpcid_single pti ssbd mba ibrs ibpb stibp tpr_shadow vnmi flexpri
ority ept vpid ept_ad fsgsbase tsc_adjust bmi1 hle avx2 smep bmi2 erms
invpcid rtm cqm mpx rdt_a avx512f avx512dq rdseed adx smap clflush
opt 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 hwp hwp_act_window hwp_epp hwp_pkg_req md_clear flush_l1d
arch_capabilities
vmx flags : vnmi preemption_timer posted_intr invvpid ept_x_only ept_ad
ept_1gb flexpriority apicv tsc_offset vtpr mtf vapic ept vp
id unrestricted_guest vapic_reg vid ple ept_mode_based_exec tsc_scaling
bugs : cpu_meltdown spectre_v1 spectre_v2 spec_store_bypass l1tf mds swapgs
taa itlb_multihit mmio_stale_data retbleed

Thoughts?

jerry
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