How to disable cpu frequency scaling in Centos 7
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I have tried all the suggestions here How to disable CPU frequency scaling in CentOS 6?
However, the frequency still changes up and down. Even for CPUs I have isolated which are idle.
$ grep "cpu MHz" /proc/cpuinfo
cpu MHz : 3201.523
cpu MHz : 2197.091
cpu MHz : 3575.810
cpu MHz : 3521.169
cpu MHz : 1675.158
cpu MHz : 3559.854
cpu MHz : 3079.546
cpu MHz : 3092.115
and
$ grep "cpu MHz" /proc/cpuinfo
cpu MHz : 2791.615
cpu MHz : 3006.516
cpu MHz : 2203.565
cpu MHz : 2030.085
cpu MHz : 1774.537
cpu MHz : 3591.576
cpu MHz : 3600.343
cpu MHz : 3595.899
NOTE: the last two CPUs are isolated so basically idle at this time.
I have tried setting the BIOS to maximum speed and normal. I have tried all the governors and turning intel_pstates on and off.
$ cpupower frequency-info
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: 10.0 us
hardware limits: 1.20 GHz - 3.60 GHz
available frequency steps: 3.60 GHz, 3.60 GHz, 3.40 GHz, 3.30 GHz, 3.10 GHz, 2.90 GHz, 2.70 GHz, 2.60 GHz, 2.40 GHz, 2.20 GHz, 2.10 GHz, 1.90 GHz, 1.70 GHz, 1.50 GHz, 1.40 GHz, 1.20 GHz
available cpufreq governors: conservative userspace powersave ondemand performance schedutil
current policy: frequency should be within 3.60 GHz and 3.60 GHz.
The governor "userspace" may decide which speed to use
within this range.
current CPU frequency: Unable to call hardware
current CPU frequency: 2.02 GHz (asserted by call to kernel)
boost state support:
Supported: yes
Active: yes
The current speed is usually less than the minimum, however, I have seen it as 4.0 - 4.3 GHz.
centos bios cpu-frequency
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up vote
1
down vote
favorite
I have tried all the suggestions here How to disable CPU frequency scaling in CentOS 6?
However, the frequency still changes up and down. Even for CPUs I have isolated which are idle.
$ grep "cpu MHz" /proc/cpuinfo
cpu MHz : 3201.523
cpu MHz : 2197.091
cpu MHz : 3575.810
cpu MHz : 3521.169
cpu MHz : 1675.158
cpu MHz : 3559.854
cpu MHz : 3079.546
cpu MHz : 3092.115
and
$ grep "cpu MHz" /proc/cpuinfo
cpu MHz : 2791.615
cpu MHz : 3006.516
cpu MHz : 2203.565
cpu MHz : 2030.085
cpu MHz : 1774.537
cpu MHz : 3591.576
cpu MHz : 3600.343
cpu MHz : 3595.899
NOTE: the last two CPUs are isolated so basically idle at this time.
I have tried setting the BIOS to maximum speed and normal. I have tried all the governors and turning intel_pstates on and off.
$ cpupower frequency-info
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: 10.0 us
hardware limits: 1.20 GHz - 3.60 GHz
available frequency steps: 3.60 GHz, 3.60 GHz, 3.40 GHz, 3.30 GHz, 3.10 GHz, 2.90 GHz, 2.70 GHz, 2.60 GHz, 2.40 GHz, 2.20 GHz, 2.10 GHz, 1.90 GHz, 1.70 GHz, 1.50 GHz, 1.40 GHz, 1.20 GHz
available cpufreq governors: conservative userspace powersave ondemand performance schedutil
current policy: frequency should be within 3.60 GHz and 3.60 GHz.
The governor "userspace" may decide which speed to use
within this range.
current CPU frequency: Unable to call hardware
current CPU frequency: 2.02 GHz (asserted by call to kernel)
boost state support:
Supported: yes
Active: yes
The current speed is usually less than the minimum, however, I have seen it as 4.0 - 4.3 GHz.
centos bios cpu-frequency
add a comment |
up vote
1
down vote
favorite
up vote
1
down vote
favorite
I have tried all the suggestions here How to disable CPU frequency scaling in CentOS 6?
However, the frequency still changes up and down. Even for CPUs I have isolated which are idle.
$ grep "cpu MHz" /proc/cpuinfo
cpu MHz : 3201.523
cpu MHz : 2197.091
cpu MHz : 3575.810
cpu MHz : 3521.169
cpu MHz : 1675.158
cpu MHz : 3559.854
cpu MHz : 3079.546
cpu MHz : 3092.115
and
$ grep "cpu MHz" /proc/cpuinfo
cpu MHz : 2791.615
cpu MHz : 3006.516
cpu MHz : 2203.565
cpu MHz : 2030.085
cpu MHz : 1774.537
cpu MHz : 3591.576
cpu MHz : 3600.343
cpu MHz : 3595.899
NOTE: the last two CPUs are isolated so basically idle at this time.
I have tried setting the BIOS to maximum speed and normal. I have tried all the governors and turning intel_pstates on and off.
$ cpupower frequency-info
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: 10.0 us
hardware limits: 1.20 GHz - 3.60 GHz
available frequency steps: 3.60 GHz, 3.60 GHz, 3.40 GHz, 3.30 GHz, 3.10 GHz, 2.90 GHz, 2.70 GHz, 2.60 GHz, 2.40 GHz, 2.20 GHz, 2.10 GHz, 1.90 GHz, 1.70 GHz, 1.50 GHz, 1.40 GHz, 1.20 GHz
available cpufreq governors: conservative userspace powersave ondemand performance schedutil
current policy: frequency should be within 3.60 GHz and 3.60 GHz.
The governor "userspace" may decide which speed to use
within this range.
current CPU frequency: Unable to call hardware
current CPU frequency: 2.02 GHz (asserted by call to kernel)
boost state support:
Supported: yes
Active: yes
The current speed is usually less than the minimum, however, I have seen it as 4.0 - 4.3 GHz.
centos bios cpu-frequency
I have tried all the suggestions here How to disable CPU frequency scaling in CentOS 6?
However, the frequency still changes up and down. Even for CPUs I have isolated which are idle.
$ grep "cpu MHz" /proc/cpuinfo
cpu MHz : 3201.523
cpu MHz : 2197.091
cpu MHz : 3575.810
cpu MHz : 3521.169
cpu MHz : 1675.158
cpu MHz : 3559.854
cpu MHz : 3079.546
cpu MHz : 3092.115
and
$ grep "cpu MHz" /proc/cpuinfo
cpu MHz : 2791.615
cpu MHz : 3006.516
cpu MHz : 2203.565
cpu MHz : 2030.085
cpu MHz : 1774.537
cpu MHz : 3591.576
cpu MHz : 3600.343
cpu MHz : 3595.899
NOTE: the last two CPUs are isolated so basically idle at this time.
I have tried setting the BIOS to maximum speed and normal. I have tried all the governors and turning intel_pstates on and off.
$ cpupower frequency-info
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: 10.0 us
hardware limits: 1.20 GHz - 3.60 GHz
available frequency steps: 3.60 GHz, 3.60 GHz, 3.40 GHz, 3.30 GHz, 3.10 GHz, 2.90 GHz, 2.70 GHz, 2.60 GHz, 2.40 GHz, 2.20 GHz, 2.10 GHz, 1.90 GHz, 1.70 GHz, 1.50 GHz, 1.40 GHz, 1.20 GHz
available cpufreq governors: conservative userspace powersave ondemand performance schedutil
current policy: frequency should be within 3.60 GHz and 3.60 GHz.
The governor "userspace" may decide which speed to use
within this range.
current CPU frequency: Unable to call hardware
current CPU frequency: 2.02 GHz (asserted by call to kernel)
boost state support:
Supported: yes
Active: yes
The current speed is usually less than the minimum, however, I have seen it as 4.0 - 4.3 GHz.
centos bios cpu-frequency
centos bios cpu-frequency
asked Sep 19 at 16:03
Peter Lawrey
1063
1063
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