Hi Robert,
>> Fedora:
>> Pystone(1.1) time for 50000 passes = 10.9073
>> This machine benchmarks at 4584.1 pystones/second
>
> Which governor are you using? It seems to be definitely stuck at 300Mhz
# cpupower frequency-info
analyzing CPU 0:
driver: generic_cpu0
CPUs which run at the same hardware frequency: 0
CPUs which need to have their frequency coordinated by software: 0
maximum transition latency: 300 us.
hardware limits: 300 MHz - 1000 MHz
available frequency steps: 300 MHz, 600 MHz, 800 MHz, 1000 MHz
available cpufreq governors: conservative, userspace, powersave,
ondemand, performance
current policy: frequency should be within 300 MHz and 1000 MHz.
The governor "ondemand" may decide which speed to use
within this range.
current CPU frequency is 300 MHz (asserted by call to hardware).
> 3.13.0-bone4 (what i'm shipping to debian bone users..)
kernel-3.13.0-1.1.fc20.armv7hl
[root@bblack ~]# cpupower frequency-info
analyzing CPU 0:
driver: generic_cpu0
CPUs which run at the same hardware frequency: 0
CPUs which need to have their frequency coordinated by software: 0
maximum transition latency: 300 us.
hardware limits: 300 MHz - 1000 MHz
available frequency steps: 300 MHz, 600 MHz, 800 MHz, 1000 MHz
available cpufreq governors: conservative, userspace, powersave,
ondemand, performance
current policy: frequency should be within 300 MHz and 1000 MHz.
The governor "ondemand" may decide which speed to use
within this range.
current CPU frequency is 300 MHz (asserted by call to hardware).
[root@bblack ~]# /usr/lib/python2.7/test/pystone.py
Pystone(1.1) time for 50000 passes = 6.20305
This machine benchmarks at 8060.55 pystones/second
[root@bblack ~]# cpupower frequency-set -f 600000
Setting cpu: 0
[root@bblack ~]# /usr/lib/python2.7/test/pystone.py
Pystone(1.1) time for 50000 passes = 10.6237
This machine benchmarks at 4706.45 pystones/second
[root@bblack ~]# cpupower frequency-set -f 800000
Setting cpu: 0
[root@bblack ~]# /usr/lib/python2.7/test/pystone.py
Pystone(1.1) time for 50000 passes = 7.76076
This machine benchmarks at 6442.67 pystones/second
[root@bblack ~]# cpupower frequency-set -f 1000000
Setting cpu: 0
[root@bblack ~]# /usr/lib/python2.7/test/pystone.py
Pystone(1.1) time for 50000 passes = 6.16087
This machine benchmarks at 8115.74 pystones/second
[root@bblack ~]# cpupower frequency-info
analyzing CPU 0:
driver: generic_cpu0
CPUs which run at the same hardware frequency: 0
CPUs which need to have their frequency coordinated by software: 0
maximum transition latency: 300 us.
hardware limits: 300 MHz - 1000 MHz
available frequency steps: 300 MHz, 600 MHz, 800 MHz, 1000 MHz
available cpufreq governors: conservative, userspace, powersave,
ondemand, performance
current policy: frequency should be within 300 MHz and 1000 MHz.
The governor "userspace" may decide which speed to use
within this range.
current CPU frequency is 1000 MHz (asserted by call to hardware).
So it appears to work but the results are some what variable. Also I
presume you've got the cpufreq driver built in rather than a module as
it doesn't auto load.
Peter
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