Re: Memory performance / Cache problem

2009-10-15 Thread epsi
On Wednesday 14 October 2009 17:48:39 ext e...@gmx.de wrote: Mem clock is both times 166MHz. I don't know whether are differences in cycle access and timing, but memclock is fine. Following Siarhei hints of initialize the buffers (around 1.2 MByte each) I get different results in

Re: RE: RE: Memory performance / Cache problem

2009-10-14 Thread epsi
Mem clock is both times 166MHz. I don't know whether are differences in cycle access and timing, but memclock is fine. Following Siarhei hints of initialize the buffers (around 1.2 MByte each) I get different results in 22kernel for use of malloc alone memcpy = 473.764, loop4 = 448.430,

Re: RE: RE: RE: Memory performance / Cache problem

2009-10-14 Thread epsi
Mem clock is both times 166MHz. I don't know whether are differences in cycle access and timing, but memclock is fine. How did you physically verify this? Oszi show 166MHz, also the kernel message about freq are in both kernels the same. Following Siarhei hints of initialize the

Re: RE: Memory performance / Cache problem

2009-10-13 Thread epsi
Can you upgrade to a newer u-boot? Either from the PSP release OR u-boot tree hosted at git.denx.de (atleast 2009.03)? Also, it will be good to see the sample program you are using. ~sanjeev There is no newer u-boot from TI available. There is a SDK 02.01.03.11 but it contains the

Re: Memory performance / Cache problem

2009-10-13 Thread epsi
The L2 cache is set and running. I don't know - can it be configured or misconfigured somehow? I just checked the output of 2.6.22 kernel and get these lines (which I don't have in newer kernels): CPU0: D VIPT write-through cache CPU0: cache: 768 bytes, associativity 1, 8 byte lines, 64 sets

RE: Memory performance / Cache problem

2009-10-12 Thread epsi
Linux version 2.6.31 (s...@localhost) (gcc version 4.3.3 (Sourcery G++ Lite 2009q1-203) ) #1 Mon Oct 12 08:30:58 CEST 2009 CPU: ARMv7 Processor [411fc082] revision 2 (ARMv7), cr=10c53c7f CPU: VIPT nonaliasing data cache, VIPT nonaliasing instruction cache Machine: OMAP3 EVM Memory policy: ECC