G5 Xserve rackmeter broken?

[Benjamin Herrenschmidt]

On Sun, 2015-05-10 at 21:32 +0300, Aaro Koskinen wrote:
> Hi,
> 
> With 4.1-rc2 the rackmeter driver for G5 Xserve is giving bogus
> led patterns. So far I have seen at least the following:
> 
> a) With static load the leds seems to be sane and report CPU
> usage properly, but after few minutes they go completely OFF,
> even if the CPU load remains high.
> 
> b) On a completely idle system, leds alter between all OFF and all ON
> roughly once a second.
> 
> Unfortunately I cannot say which was the last kernel where this worked
> properly... These servers were away from normal use for a while due
> to PSU issues.

And mine is dead due to ... PSU issue :-(

It could be that what we use to get the "idle time" isn't correct
anymore...

Ben.