From: Grant Coady <gcoady.lk@gmail.com>
To: cpufreq@vger.kernel.org
Subject: cpufreq values displayed 20% high on Intel J1900 BayTrail CPU
Date: Sun, 14 Sep 2014 11:40:14 +1000 [thread overview]
Message-ID: <1vr91al704l1gn98hm3rbp34925s2fnpm1@4ax.com> (raw)
Hi there,
The J1900 CPU:
<http://ark.intel.com/products/78867/Intel-Celeron-Processor-J1900-2M-Cache-up-to-2_42-GHz>
is supposed to run at 1.33, 1.99 and 2.42 GHz for idle, normal, and boost.
Instead we have:
~$ uname -a
Linux itxmini 3.16.2a #14 SMP Sun Sep 14 11:06:35 EST 2014 x86_64 Intel(R) Celeron(R) CPU J1900 @ 1.99GHz GenuineIntel GNU/Linux
~$ 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: intel_pstate
CPUs which run at the same hardware frequency: 0
CPUs which need to have their frequency coordinated by software: 0
maximum transition latency: 0.97 ms.
hardware limits: 1.60 GHz - 2.90 GHz
available cpufreq governors: performance, powersave
current policy: frequency should be within 1.60 GHz and 2.90 GHz.
The governor "powersave" may decide which speed to use
within this range.
analyzing CPU 1:
driver: intel_pstate
CPUs which run at the same hardware frequency: 1
CPUs which need to have their frequency coordinated by software: 1
maximum transition latency: 0.97 ms.
hardware limits: 1.60 GHz - 2.90 GHz
available cpufreq governors: performance, powersave
current policy: frequency should be within 1.60 GHz and 2.90 GHz.
The governor "powersave" may decide which speed to use
within this range.
analyzing CPU 2:
driver: intel_pstate
CPUs which run at the same hardware frequency: 2
CPUs which need to have their frequency coordinated by software: 2
maximum transition latency: 0.97 ms.
hardware limits: 1.60 GHz - 2.90 GHz
available cpufreq governors: performance, powersave
current policy: frequency should be within 1.60 GHz and 2.90 GHz.
The governor "powersave" may decide which speed to use
within this range.
analyzing CPU 3:
driver: intel_pstate
CPUs which run at the same hardware frequency: 3
CPUs which need to have their frequency coordinated by software: 3
maximum transition latency: 0.97 ms.
hardware limits: 1.60 GHz - 2.90 GHz
available cpufreq governors: performance, powersave
current policy: frequency should be within 1.60 GHz and 2.90 GHz.
The governor "powersave" may decide which speed to use
within this range.
Where do I go (which file/s) to fix this?
More info:
.config: <http://bugsplatter.id.au/kernel/boxen/itxmini/config-3.16.2a.gz>
dmesg: <http://bugsplatter.id.au/kernel/boxen/itxmini/dmesg-3.16.2a.gz>
Thanks,
Grant.
reply other threads:[~2014-09-14 1:40 UTC|newest]
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