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CPU low frequency

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BobbieAN
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CPU low frequency

#1

Post by BobbieAN » Thu Jan 03, 2019 10:09 pm

I decided to run MX live USB before installing it on my old computer running Dual Core E8500 CPU and freq-info reports that max frequency is 2.17GHz but E8500 should run on 3.16GHz. Is this okay, will MX use all CPU capabilities? I post the screen of terminal with freq-stats output.
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Stevo
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Re: CPU low frequency

#2

Post by Stevo » Thu Jan 03, 2019 11:57 pm

I would say that 2.2 is the CPU's base frequency is 2.2 GHz, and anything above that is turbo mode. My i7 shows similar results, since its base frequency is also 2.2 GHz, but actually gets up to 4.1 GHz at times.

There's an XFCE CPU speed widget you can add to the panel to track your CPU speed in realtime, too. That shows my CPU speed going up to 4.1.

BobbieAN
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Re: CPU low frequency

#3

Post by BobbieAN » Fri Jan 04, 2019 1:36 pm

Stevo wrote:
Thu Jan 03, 2019 11:57 pm
I would say that 2.2 is the CPU's base frequency is 2.2 GHz, and anything above that is turbo mode. My i7 shows similar results, since its base frequency is also 2.2 GHz, but actually gets up to 4.1 GHz at times.

There's an XFCE CPU speed widget you can add to the panel to track your CPU speed in realtime, too. That shows my CPU speed going up to 4.1.
So this is normal, under heavy load MX will go to 3.16GHz?

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Stevo
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Re: CPU low frequency

#4

Post by Stevo » Fri Jan 04, 2019 6:28 pm

The widget you can add to the panel is called "CPU Frequency Monitor", and it's on the ISO, so you can add it in the live session and check it out.

But, yes, MX will let your CPU go to the max as required, unless you change the settings in TLP. I have mine set to disable turbo mode on battery for example, to extend battery life, plus 2.2 GHz on six cores is plenty fast enough already. On the Liquorix kernel or if I disable pstate on the regular kernel, I can also use indicator-cpufreq to further restrict CPU speed, even limiting it to the lowest 800 MHz setting.

sunrat
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Re: CPU low frequency

#5

Post by sunrat » Fri Jan 04, 2019 8:31 pm

I can't help you solve this and not on MX right now but I have a Core2Duo E8500 and it definitely will ramp to 3.17GHz under load.

Code: Select all

$ cpufreq-info
cpufrequtils 008: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to cpufreq@vger.kernel.org, please.
analyzing CPU 0:
  driver: acpi-cpufreq
  CPUs which run at the same hardware frequency: 0
  CPUs which need to have their frequency coordinated by software: 0
  maximum transition latency: 160 us.
  hardware limits: 2.00 GHz - 3.17 GHz
  available frequency steps: 3.17 GHz, 2.00 GHz
  available cpufreq governors: conservative, powersave, userspace, ondemand, performance, schedutil
  current policy: frequency should be within 2.00 GHz and 3.17 GHz.
                  The governor "ondemand" may decide which speed to use
                  within this range.
  current CPU frequency is 2.36 GHz.
  cpufreq stats: 3.17 GHz:14.64%, 2.00 GHz:85.36%  (637441)
analyzing CPU 1:
  driver: acpi-cpufreq
  CPUs which run at the same hardware frequency: 1
  CPUs which need to have their frequency coordinated by software: 1
  maximum transition latency: 160 us.
  hardware limits: 2.00 GHz - 3.17 GHz
  available frequency steps: 3.17 GHz, 2.00 GHz
  available cpufreq governors: conservative, powersave, userspace, ondemand, performance, schedutil
  current policy: frequency should be within 2.00 GHz and 3.17 GHz.
                  The governor "ondemand" may decide which speed to use
                  within this range.
  current CPU frequency is 2.47 GHz.
  cpufreq stats: 3.17 GHz:12.74%, 2.00 GHz:87.26%  (690577)

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oops
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Re: CPU low frequency

#6

Post by oops » Sat Jan 05, 2019 7:48 am

BobbieAN wrote:
Thu Jan 03, 2019 10:09 pm
I decided to run MX live USB before installing it on my old computer running Dual Core E8500 CPU and freq-info reports that max frequency is 2.17GHz but E8500 should run on 3.16GHz. Is this okay, will MX use all CPU capabilities? I post the screen of terminal with freq-stats output.
To test, and to load for exemple: 4 cores for 5 seconds (CPU at 100%):

Code: Select all

seq 4 | xargs -P0 -n1 timeout 5 yes > /dev/null
$ inxi -Fxxxz : System: Host:XEON ... Distro: MX-18_x64 Continuum

BobbieAN
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Re: CPU low frequency

#7

Post by BobbieAN » Thu Jan 10, 2019 4:17 pm

Tnx for helping everyone, I installed MX and it's running great.

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