Re: Parfait and UoM (java) RPM packages

"Nathan Scott" <[email protected]>
Newsgroups gmane.comp.sysutils.pcp
Message-ID <[email protected]>

----- Original Message -----
> [...]
> >> It seems that any user who is able (*) to start the same application can
> >> "override" the metrics for everyone else.
> > 
> > That's correct - permissions are all filesystem-based - any user can
> > remove/
> > truncate/overwrite their own files.  We could perhaps add some file locking
> > here, and prevent the second process from starting... not sure if that's
> > the
> > right thing to do always though.
> 
> I'd say it's a surprise that this happens by default, especially in the
> case of Java as the man page says handling of these files is hidden in
> libraries like Parfait, one would expect to see new instances like
> everywhere else, not overriding existing metrics.
> 

Its come from a world where java applications are daemons and tend to
monopolize a machine, so its not really been an issue before.  There
is certainly scope for improvement though.

cheers.

--
Nathan

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