22 May
2011
22 May
'11
4:25 p.m.
On 05/22/2011 03:53 PM, Robin Gareus wrote:
Does the tool needs cpufrequtils?
You can verify it by running e.g.
jack_cpu -c 60 # generate 60% JACK-DSP load
jack_cpu , is that a jack2 only
tool? I don't have it here.
22 May
22 May
4:32 p.m.
New subject: Cpu scaling on performance, permanent
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
4:45 p.m.
New subject: Cpu scaling on performance, permanent
On 05/22/2011 04:32 PM, Robin Gareus wrote:
*
$ cpufreq-info
cpufrequtils 007: cpufreq-info (C) Dominik Brodowski 2004-2009
Report errors and bugs to cpufreq(a)vger.kernel.org, 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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Robin Gareus -
rosea.grammostola