On 5/4/09 8:08 AM, Stefan Roese wrote:
On Monday 04 May 2009, Jonathan Haws wrote:
I suggest that you run some stress tests in a conditioning cabinet to see if the other boards don't show any problems.
That is a good idea. I haven't thought of performing those tests. Are there specific tests I can enable in the U-Boot environment for that?
Perhaps the memory tests from the POST infrastructure. But from my experience a realworld application running under Linux is a good test. For example compiling a Linux kernel in a loop. Perhaps mounted via NFS. Something like this should fail at some time when SDRAM related problems exist.
Agreed that real world application tests can be sufficiently abusive to surface problems.
However, a side benefit of a non-application, exhaustive diagnostic is the attendant reporting that goes with such a test that can identify particular data patterns or addresses that fail giving better insight into the true nature of the problem.
Regards,
Grant