speed problem after kernel updating on PXA270 platform
I have ported/adapted the linux kernel 2.6.37 on my PXA270-based camera platform. Now a simple speed test program takes double time than with the previous kernel version (2.6.9). The cpu speed is the same for both kernels, 510 Mhz
The test program simply measures the time required to fill 1 MB of RAM with a constant value.
I didn't change the bootloader configuration, so the memory controller setting didn't change.
Any idea regarding the cause of this speed lack?
Does exist a way to test the cache memory functionality ?