[PATCH] updates to surveillance for power5
Mike Strosaker
strosake at austin.ibm.com
Fri Aug 27 10:09:59 EST 2004
Hi, Anton:
>
> Any ideas why they got rid of surveillance on POWER5?
>
Because of the virtualization layer and partitioning, the surveillance
requirement was moved to PHYP<->SP. Apparently, this was a hotly
contested issue among the platform design folks (especially considering
that partitioned power4 systems still have OS<->SP surveillance). I
think the logic is: If an OS goes down, its not likely a server problem,
hence no requirement to monitor from the server side.
At least the platform gets notified of panics via os-term. I gather
that some user space tools are expected to monitor for deadlocks/hangs
(maybe clustering tools).
Thanks,
Mike
Michael Strosaker
IBM Linux Technology Center
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