> David Boyes <[EMAIL PROTECTED]> wrote:
> <snip>
> >Perfkit also writes the Linux data it collects into it's general
summary
> >files if asked to do so. It does not correct the data for
virtualization
> >effects, but the raw data is there to be correlated.
> 
> Not really -- you cannot realistically correlate the data unless the
> collection is synchronized.  I guess over a long enough period you
could
> get pretty close, but CPU usage over the last hour isn't really very
> interesting.  You also cannot (last time I checked) collect that data
for
> all users; it's more of a "If you have a problem, turn it on for the
user
> in question".  Usable (sort of) for benchmarking, but not for general
> reporting.

Key phrases: "if asked to do so" and "data it collects". GIGO. 

Depends on what you want the data for. Overall trends may be good
enough. YMMV. 

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