Optimal gpu_mem_512 setting

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Optimal gpu_mem_512 setting

Postby mariosangiorgio » Fri Oct 17, 2014 10:58 pm

Hello,

I have a Raspberry PI model B with 512MB of RAM memory.

In my /boot/config.txt file I have the following settings for the GPU memory. I think they are the default settings.
$this->bbcode_second_pass_code('', '
gpu_mem_512=316
gpu_mem_256=128
')

I am not using the Raspberry PI for doing anything graphical at all so I think that I could give the GPU less memory.

Not that my system is particularly RAM hungry, as you can see in my free output.
$this->bbcode_second_pass_code('', '
mario@alarmpi> free -h ~
total used free shared buffers cached
Mem: 184M 135M 49M 320K 30M 72M
-/+ buffers/cache: 32M 152M
Swap: 511M 0B 511M
')
I just think that since I'm only running a few services and that I'm only connecting to the box via ssh it would be more beneficial to have more available RAM rather than more memory allocated to the GPU.
mariosangiorgio
 
Posts: 7
Joined: Fri Oct 17, 2014 6:09 pm

Re: Optimal gpu_mem_512 setting

Postby kotrfa » Mon Oct 20, 2014 8:13 pm

Hello.

I have headless server on Archlinux ARM with just nginx, two simple django sites and using only SSH to connect. Here is what is uncommented in my /boot/config.txt:
$this->bbcode_second_pass_code('', '
##Turbo
arm_freq=1000
core_freq=500
sdram_freq=500
over_voltage=6

gpu_mem=16
')
16 GPU MB is perfectly fine - I have then 482 MB RAM and activelly using about 100 MB.
kotrfa
 
Posts: 7
Joined: Fri Jun 06, 2014 8:14 pm

Re: Optimal gpu_mem_512 setting

Postby mariosangiorgio » Mon Oct 20, 2014 8:18 pm

Thanks for your answer!

I see you are running it in turbo mode. Is the speed improvement noticeable? What about the power consumption and the device heating?

I don't think I'm going to use my Raspberry PI in turbo mode, but I'm curious to know more about it.
mariosangiorgio
 
Posts: 7
Joined: Fri Oct 17, 2014 6:09 pm


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