Speed of Panda

[M Suneel Kumar]

Hi All,

Can i know at what speed panda board is running? (i am using ubuntu 10.10)

Regards,

Suneel

[Mayur]

Hello,

Pandaboard has OMAP4430 Application Processor which uses 1 GHz dual-
core ARM Cortex-A9s and PowerVR SGX540 integrated 3D graphics
accelerator which runs at a clock frequency of 304 and 384 MHz.

Check out this link
http://en.wikipedia.org/wiki/Texas_Instruments_OMAP

Regards,
Mayur Punamiya
WIT Solapur

[Joshi, Vikas]

What does “cat /proc/cpuinfo” show?

 

Vikas

[M Suneel Kumar]

Hi Vikas,

cpuinfo shows below information

Processor : ARMv7 Processor rev 2 (v7l)

processor : 0

BogoMIPS : 2009.29

processor : 1

BogoMIPS : 1963.08

Features : swp half thumb fastmult vfp edsp thumbee neon vfpv3 

CPU architecture: 7

Hardware : OMAP4 Panda board

Revision : 0020

Serial : 0000000000000000

From this can i take it like panda is running at 2009MIPS .

Is this equalaent to 2GHZ speed

Thanks

Sunee;

[Anand Gadiyar]

Nope, this is 2 processor cores, each at 1 GHz.

BogoMIPS is approx twice the clock speed.

[M Suneel Kumar]

Hi Anand,

So processing speed of panda is  2GHZ ?

I want to measure the MIPS to  my system. For that I want to know at what clock speed panda is running?

[Joshi, Vikas]

Is there any entry in the output of that command that says “cpu MHz”?

I have not looked at the output of the command but will do so when I boot up my Panda.

[M Suneel Kumar]

No vikas.. it doesn't show any entry for "cpu MHZ"

[Vladimir Pantelic]

M Suneel Kumar wrote:
> Hi Anand,
>
> So processing speed of panda is 2GHZ ?

no, but it might be 2 cores running at 1GHz each...

[Joshi, Vikas]

BogoMIPS can give you approximate clock speed.

 

It’s twice the clock speed so your cores are running at 1GHz each.

 

More about BogoMIPS is at http://en.wikipedia.org/wiki/BogoMips

 

The cpu speed is set at 1GHz in MLO.

[B U J J I]

hi Guys,

I am getting different values on /proc/cpuinfo on omap4 ubuntu maverick 10.10 from the above

Processor : ARMv7 Processor rev 2 (v7l)

processor : 0

BogoMIPS : 599.13

processor : 1

BogoMIPS : 584.13

Features : swp half thumb fastmult vfp edsp thumbee neon vfpv3 

CPU implementer : 0x41

CPU architecture: 7

CPU variant : 0x1

CPU part : 0xc09

CPU revision : 2

Hardware : OMAP4430 Panda Board

Revision : 0020

Serial : 0000000000000000

and on 11.04 natty

i am getting like 

Processor : ARMv7 Processor rev 2 (v7l)

processor : 0

BogoMIPS : 2009.29

processor : 1

BogoMIPS : 1963.08

Features : swp half thumb fastmult vfp edsp thumbee neon vfpv3 

CPU architecture: 7

Hardware : OMAP4 Panda board

Revision : 0020

Serial : 0000000000000000

please tell me the difference. and where is the problem...

and how i can set my board to use 1Ghz clock. what are the changes needed to do...

thanks,

bujji

[Joshi, Vikas]

The performance CPU governor lets your CPU frequency always to the highest available.

Not sure if below helps but worth a try:

echo performance > /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor

echo 1 > /sys/devices/system/cpu/cpu1/online

Vikas

---

From: panda...@googlegroups.com [panda...@googlegroups.com] on behalf of B U J J I [siva...@gmail.com]
Sent: Tuesday, August 09, 2011 4:27 PM

[Robert Nelson]

Upgrade your MLO boot file on the maverick system, originally in the
repo on ( http://gitorious.org/x-loader/x-loader ) it was set to
600Mhz then mid nov/dec it was changed by default to 1Ghz for the
panda..

Regards,

--
Robert Nelson
http://www.rcn-ee.com/

[B U J J I]

hi Guys,

Thanks for your reply I am able to change cpu frequency but its not persistent.

Initially after boot

Processor : ARMv7 Processor rev 2 (v7l)

processor : 0

BogoMIPS : 2009.29

processor : 1

BogoMIPS : 1963.08

 after few secs of boot its changing back to normal frequency

Processor : ARMv7 Processor rev 2 (v7l)

processor : 0

BogoMIPS : 599.13

processor : 1

BogoMIPS : 584.13

what is the problem. 

Do we need to change anywhere else like boot.scr or kernel ?

please suggest...

Thanks,

Bujji

[Joshi, Vikas]

How were you able to change the freq?
Knowing it will help guide keeping it persistent.

Vikas

---

From: panda...@googlegroups.com [panda...@googlegroups.com] on behalf of B U J J I [siva...@gmail.com]
Sent: Thursday, August 11, 2011 6:52 PM

To: panda...@googlegroups.com
Subject: Re: [pandaboard] Speed of Panda

[B U J J I]

i downloaded and compiled new x-loader for panda

where is it is set in the file

include/configs/omap4430panda.h

#define CONFIG_MPU_1000 //line no 47

Thanks,

bujji

[Joshi, Vikas]

The performance CPU governor lets your CPU frequency always to the highest available.

I had posted couple of commands on this forum couple of days ago.
Search for "cpu speed" and see if you see those commands.

The MLO that comes with Natty binaries provided should have speed set at 1GHz.

Vikas

---

From: panda...@googlegroups.com [panda...@googlegroups.com] on behalf of B U J J I [siva...@gmail.com]

Sent: Thursday, August 11, 2011 7:37 PM

[B U J J I]

vikas,
thanks for your reply.
but this is a temporary solution right
even if i copy natty MLO to maverick still my problem continues...

i want it to be fixed as 1 Ghz

can you please help me..

Thanks,
bujji

[Joshi, Vikas]

Does Natty MLO give you MAX fixed 1 GHz?

Are you looking for fixed 1GHz on Maveric?

 

You are right, what I mentioned below is not for MLO enabled fixed max of 1GHz.

 

Vikas