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> |
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> Yeah, the cpufreq utils show all the relevant information. I use the |
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> acpi-cpufreq driver and when I didn't use it nothing happened. cpufreq-aperf |
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> shows each CPU at 1.2GHz. I'll look at the EIST in BIOS, too. Thanks for the |
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> pointers. |
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> |
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|
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Here's an interesting item: |
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|
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12:41:00# cat /sys/devices/system/cpu/cpu0/cpufreq/bios_limit |
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1199000 |
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|
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which sort of jives with the "asserted by call to hardware" in the |
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cpufreq-info section: |
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analyzing CPU 3: |
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driver: acpi-cpufreq |
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CPUs which run at the same hardware frequency: 0 1 2 3 |
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CPUs which need to have their frequency coordinated by software: 3 |
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maximum transition latency: 10.0 us. |
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hardware limits: 1.20 GHz - 2.67 GHz |
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available frequency steps: 2.67 GHz, 2.67 GHz, 2.53 GHz, 2.40 GHz, 2.27 |
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GHz, 2.13 GHz, 2.00 GHz, 1.87 GHz, 1.73 GHz, 1.60 GHz, 1.47 GHz, 1.33 GHz, |
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1.20 GHz |
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available cpufreq governors: conservative, ondemand, userspace, powersave, |
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performance |
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current policy: frequency should be within 1.20 GHz and 1.20 GHz. |
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The governor "performance" may decide which speed to use |
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within this range. |
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current CPU frequency is 1.20 GHz (asserted by call to hardware). |
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cpufreq stats: 2.67 GHz:0.25%, 2.67 GHz:0.01%, 2.53 GHz:0.01%, 2.40 |
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GHz:0.01%, 2.27 GHz:0.01%, 2.13 GHz:0.01%, 2.00 GHz:0.01%, 1.87 GHz:0.01%, |
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1.73 GHz:0.01%, 1.60 GHz:0.01%, 1.47 GHz:0.01%, 1.33 GHz:0.01%, 1.20 |
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GHz:99.61% (28) |
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|
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So, why are there micro-spikes of higher frequencies in the above stats? The |
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stats section says there are only five transitions. |
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|
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-- |
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Bill Longman |