[mythtvnz] Pointers on how to track down machine lockup

[Wade Maxfield]

On 11/10/2010, at 1:26 PM, Solor Vox wrote:

> If you have another PSU on hand, that would be the next best thing to
> check.  

I do have the 430W supply from the just retired backend.  It should be enough to cover the requirements of the new machine, since the old one ran the same cards & 5 HDs.

There was a break in the recording schedule  at lunch, so I've just swapped that in and will see how that goes over the next week. It's about 4 years old and at idle the machine now registers as using 134W (up from 122W that it used with the new PSU). 


> You said you check everything on the list... how did you verify
> the PSU was good?  

You got me there. I haven't found a way to isolate that, other than trying a different PSU but leaving the rest of the machine the same.


> You might also try a CPU burn-in (cpuburn) along with
> some disk IO (iozone3) to simulate both system and power loads.  I
> recommend using one cpuburn mmx process for each core.  These should cause
> any weak components to fail rather quickly.
> 

Which components are we trying to stress test here? I've taken the new PSU out so should I be running these tests on the new machine with old PSU, or the old machine with the new PSU?

I've done a quick 5 minute cpuburn on the new machine/old PSU.  8 copies of burnMMX resulted in CPU core temps quickly jumping from 24-28° to 43-46°. After 5 minutes they were still at 43-46°. Power draw went from 134W to 196W.


 - Wade