Solved: Problem with performance governor

[SOLVED] Problem with performance governor - Printable Version

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Problem with performance governor - mpnico - 24th Jan, 2013 07:38 PM

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.

RE: Problem with performance governor - CurlyMo - 24th Jan, 2013 07:52 PM

Did you check:

Code:

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

While running in performance mode?

RE: Problem with performance governor - mpnico - 25th Jan, 2013 02:04 AM

Yes, it was 700 Mhz with performance governor

RE: Problem with performance governor - CurlyMo - 25th Jan, 2013 05:50 AM

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?

RE: Problem with performance governor - mpnico - 25th Jan, 2013 06:00 AM

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

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

RE: Problem with performance governor - CurlyMo - 25th Jan, 2013 06:10 AM

kernel seems fine...

RE: Problem with performance governor - mpnico - 25th Jan, 2013 06:23 AM

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

RE: Problem with performance governor - CurlyMo - 25th Jan, 2013 06:27 AM

You're welcome!

RE: Problem with performance governor - harmony - 26th Jan, 2013 06:56 AM

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? Smile

Every command was executed while running an 1080p movie.

RE: Problem with performance governor - CurlyMo - 26th Jan, 2013 07:16 AM

The second

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

RE: Problem with performance governor - harmony - 26th Jan, 2013 09:08 AM

ok, then everything should be fine.

Thank you.