how to speed up your PI 2+3

[Rive]

did you ever try a higher clock than 1260?

Yep.1.3 GHz

It was unstable for me. What is stable for one pi3 may not be stable for another Pi3. It can go either way.... you may be able to get a higher stable overclock, whereas some others may not be able to overclock at all. Just depends.

My pi3 did not like over_voltage over 4, or sdram_freq over 575 , or arm-freq over 1300. I was unable to pass linpack bench any higher than arm at 1260 with my current configuration. I am as 'optimized' as I am gonna get I think.

Did you see the YouTube link in previous post?

[marvinmarmelade]

RaspberryPi 3:

gpu_mem_1024=128
arm_freq=1260
core_freq=500
sdram_freq=500
over_voltage=6
cma_lwm=16
cma_hwm=32
force_turbo=1
gpu_freq=350

this configuration works very well and iI get around 6 Gflops with Jessie and 3 with MATE
I'll tell my friands about this...

[Rive]

RaspberryPi 3:


cma_lwm=16
cma_hwm=32


this configuration works very well and iI get around 6 Gflops with Jessie and 3 with MATE
I'll tell my friands about this...

FYI, according to this, memory allocation split for high and low (cma) may no longer be supported... (and in any event, to be functional, it needed the below added to cmdline.txt (Which from what i can gather, was from back in 2012, and was used to make the Pi (original?), with an older kernel version more stable, and less likely to crash under load):

Code: Select all

 coherent_pool=6M smsc95xx.turbo_mode=N

Do you have that in cmdline?

popcornmix commented on Jan 10
CMA is not supported.

https://github.com/raspberrypi/linux/issues/503


Now, whether CMA is now supported on Pi3, I havent a clue (nor how to test/verify the allocation)....