Fedora and cpu usage

[Lennart Sorensen]

On Fri, Aug 07, 2009 at 05:06:18PM -0400, D. Hugh Redelmeier wrote:
> | From: Lennart Sorensen <lsorense-1wCw9BSqJbv44Nm34jS7GywD8/FfD2ys at public.gmane.org>
> 
> | Does the system have any SMM (system management mode) stuff?
> 
> How does one go about finding out?  That stuff tries to be invisible.
> Of course it fails in the latency department.Z

I remember one of the redhat presenters at linux symposium mentioned the
existance of an SMM detector tool.  Essentially it tried to notice when
the system suddenly disappeared for a while and record for how long.
I can't seem to find the tool though.

Apparently it is useful for testing servers and other systems.  The people
that run real time systems require systems without SMM and need to test.
Otherwise if they come and complain and they don't use hardware that is
known to not have SMM, then no one can promise that they can do real time.
It simply isn't possible.  The list of x86 systems that can actually be
used for real time these days is very very short.

-- 
Len Sorensen
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