MPC5200B memory performance

Matthias Fechner idefix at fechner.net
Thu May 17 04:03:00 EST 2007


Hello Daniel,

* Daniel Schnell <daniel.schnell at marel.com> [15-05-07 11:22]:
> I get the following values on my board:

my result is:
Test (10000) memcpy of sizes (1024) ....
10000 memcpy. Time per memcpy: 1814 [nsec] (564 MB/sec)
 finished.
Test (10000) memcpy of sizes (2048) ....
10000 memcpy. Time per memcpy: 3433 [nsec] (596 MB/sec)
 finished.
Test (10000) memcpy of sizes (4096) ....
10000 memcpy. Time per memcpy: 6687 [nsec] (612 MB/sec)
 finished.
Test (10000) memcpy of sizes (8192) ....
10000 memcpy. Time per memcpy: 21454 [nsec] (381 MB/sec)
 finished.
Test (10000) memcpy of sizes (16384) ....
10000 memcpy. Time per memcpy: 205551 [nsec] (79 MB/sec)
 finished.
Test (1000) memcpy of sizes (32768) ....
1000 memcpy. Time per memcpy: 379875 [nsec] (86 MB/sec)
 finished.
Test (1000) memcpy of sizes (51200) ....
1000 memcpy. Time per memcpy: 588792 [nsec] (86 MB/sec)
 finished.
Test (1000) memcpy of sizes (102400) ....
1000 memcpy. Time per memcpy: 1126511 [nsec] (90 MB/sec)
 finished.
Test (100) memcpy of sizes (1048576) ....
100 memcpy. Time per memcpy: 11307890 [nsec] (92 MB/sec)
 finished.
Test (10) memcpy of sizes (10485760) ....
10 memcpy. Time per memcpy: 120783600 [nsec] (86 MB/sec)
 finished.
Test (5) memcpy of sizes (52428800) ....
5 memcpy. Time per memcpy: 673867800 [nsec] (77 MB/sec)
 finished.
	   


Best regards,
Matthias

-- 

"Programming today is a race between software engineers striving to
build bigger and better idiot-proof programs, and the universe trying to
produce bigger and better idiots. So far, the universe is winning." --
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