[SOLVED] Problem with performance governor

[mpnico]

Hi,

I tried the testing XBMC RC3 & new firmware and everything seems to work until I tried some high bitrate + DTS movie. I just saw that overclocking is not working anymore.

I don't know if it's a problem with new firmware, I didn't try before upgrading firmware

My config.txt is :

Code:

arm_freq=900                                                                                                                                                                                  
core_freq=375                                                                                                                                                                                
disable_overscan=1                                                                                                                                                                            
gpu_mem_256=128                                                                                                                                                                              
gpu_mem_512=128                                                                                                                                                                              
sdram_freq=450                                                                                                                                                                                
over_voltage=0                                                                                                                                                                                
                                                                                                                                                                                              
hdmi_ignore_cec_init=1                                                                                                                                                                        
initial_turbo=30

cpufreq detects my overclocking :

Code:

xbian@xbian:~# dmesg |grep cpufreq                                                                                                                                                            
[    1.190855] bcm2835-cpufreq: min=700000 max=900000 cur=900000

but the arm freq while watching movies is stuck @ 700 Mhz :

Code:

xbian@xbian:~# sudo cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq                                                                                                                
700000

If i switch to ondemand governor, the arm goes @ 900 Mhz on load and the movie plays fluently.

Does anybody have the same problem ?

Thx.

[CurlyMo]

Did you check:

Code:

sudo cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq

While running in performance mode?

[mpnico]

Yes, it was 700 Mhz with performance governor

[CurlyMo]

The there is cleary something wrong with your install. Did you run rpi-update?

Also, can you post a full dmesg on pastebin and post the link here?

[mpnico]

Here is my full dmesg : http://pastebin.com/rMJgyAWw

Tonight I will try to revert to standard xbian config.txt just in case.

[CurlyMo]

kernel seems fine...

[mpnico]

Ok, solved, the guilty is the initial_turbo=30. Thx anyway for help.

[CurlyMo]

You're welcome!

[harmony]

Hello,

it seems i have a similar problem.

My Pi is overlocked to 1 GHZ.

dmesg shows this

Code:

root@xbian:/home/xbian# dmesg |grep cpufreq
[    1.248761] bcm2835-cpufreq: min=700000 max=1000000 cur=700000
[    1.249058] bcm2835-cpufreq: switching to governor performancebcm2835-cpufreq: switching to governor performance

then cat cur freq

Code:

root@xbian:/home/xbian# cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_cur_freq
1000000

and cat cpuinfo shows this

Code:

root@xbian:/home/xbian# cat /proc/cpuinfo
Processor       : ARMv6-compatible processor rev 7 (v6l)
BogoMIPS        : 464.48
Features        : swp half thumb fastmult vfp edsp java tls
CPU implementer : 0x41
CPU architecture: 7
CPU variant     : 0x0
CPU part        : 0xb76
CPU revision    : 7

Hardware        : BCM2708
Revision        : 000e
Serial          : 00000000257a9004

I have 3 different values, which one is the right?

Every command was executed while running an 1080p movie.

[CurlyMo]

The second

The other two only show the specs as stated by the manufacturer

[harmony]

ok, then everything should be fine.

Thank you.