Re: Cpu scaling on performance, permanent

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On 05/22/2011 04:32 PM, Robin Gareus wrote:
On 05/22/2011 04:25 PM, rosea.grammostola wrote:
jack_cpu , is that a jack2 only tool? I don't have it here.
I suppose it is.

Alternatively
  cd /tmp/
  git clone git://rg42.org/jackfreqd
  cd jackfreq/tools
  gcc -o busyjack busyjack.c -ljack
  ./busyjack 60

ciao,
robin
*
$ cpufreq-info
cpufrequtils 007: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to cpufreq@xxxxxxxxxxxxxxx, please.
analyzing CPU 0:
  driver: acpi-cpufreq
  CPUs which run at the same hardware frequency: 0 1
  CPUs which need to have their frequency coordinated by software: 0
  maximum transition latency: 10.0 us.
  hardware limits: 800 MHz - 2.00 GHz
available frequency steps: 2.00 GHz, 2.00 GHz, 1.60 GHz, 1.20 GHz, 800 MHz available cpufreq governors: userspace, powersave, conservative, ondemand, performance
  current policy: frequency should be within 800 MHz and 1.20 GHz.
                  The governor "userspace" may decide which speed to use
                  within this range.
  current CPU frequency is 800 MHz.
cpufreq stats: 2.00 GHz:0.00%, 2.00 GHz:0.00%, 1.60 GHz:0.00%, 1.20 GHz:62.46%, 800 MHz:37.54% (636)
analyzing CPU 1:
  driver: acpi-cpufreq
  CPUs which run at the same hardware frequency: 0 1
  CPUs which need to have their frequency coordinated by software: 1
  maximum transition latency: 10.0 us.
  hardware limits: 800 MHz - 2.00 GHz
available frequency steps: 2.00 GHz, 2.00 GHz, 1.60 GHz, 1.20 GHz, 800 MHz available cpufreq governors: userspace, powersave, conservative, ondemand, performance
  current policy: frequency should be within 800 MHz and 1.20 GHz.
                  The governor "userspace" may decide which speed to use
                  within this range.
  current CPU frequency is 800 MHz.
cpufreq stats: 2.00 GHz:0.00%, 2.00 GHz:0.00%, 1.60 GHz:0.00%, 1.20 GHz:71.02%, 800 MHz:28.98% (753)

*
My cpu switches from

800000
800000

to

1200000
1200000

*
/tmp/jackfreqd/tools$ ./busyjack 60
set DSP load = 60.00
initial loopsize 25000 iterations
using chunksize of 10485760 bytes
SSE2 detected
xrun occured with loop size = 25000
xrun occured with loop size = 25000
xrun occured with loop size = 25000
xrun occured with loop size = 25000
xrun occured with loop size = 25000
xrun occured with loop size = 25000
xrun occured with loop size = 25000
xrun occured with loop size = 25000
loopsize = 25750
loopsize = 25493
loopsize = 25239
loopsize = 24987
loopsize = 24738
loopsize = 24491
loopsize = 24247
loopsize = 24005
loopsize = 23765
loopsize = 23528


\r
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