Predicting Application Resource Requirements in Virtual Environments


 
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Old 10-07-2008
Predicting Application Resource Requirements in Virtual Environments

HPL-2008-122 Predicting Application Resource Requirements in Virtual Environments - Wood, Timothy; Cherkasova, Ludmila; Ozonat, Kivanc; Shenoy, Prashant
Keyword(s): virtualization, application resource usage, benchmarking, modeling, automation, performance models, regression-based approach
Abstract: Next Generation Data Centers (NGDC) are transforming labor-intensive, hard-coded, siloed systems into shared, virtualized, automated, and fully managed adaptive infrastructures. Virtualization technologies promise great opportunities for reducing energy and hardware costs through server consolidatio ...
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Class::Virtually::Abstract(3pm) 			User Contributed Perl Documentation			   Class::Virtually::Abstract(3pm)

NAME
Class::Virtually::Abstract - Compile-time enforcement of Class::Virtual SYNOPSIS
package My::Virtual::Idaho; use base qw(Class::Virtually::Abstract); __PACKAGE__->virtual_methods(qw(new foo bar this that)); package My::Private::Idaho; use base qw(My::Virtual::Idaho); sub new { ... } sub foo { ... } sub bar { ... } sub this { ... } # oops, forgot to implement that()!! Whatever will happen?! # Meanwhile, in another piece of code! # KA-BLAM! My::Private::Idaho fails to compile because it didn't # fully implement My::Virtual::Idaho. use My::Private::Idaho; DESCRIPTION
This subclass of Class::Virtual provides compile-time enforcement. That means subclasses of your virtual class are required to implement all virtual methods or else it will not compile. BUGS and CAVEATS Because this relies on import() it is important that your classes are used instead of required. This is a problem, and I'm trying to figure a way around it. Also, if a subclass defines its own import() routine (I've done it) Class::Virtually::Abstract's compile-time checking is defeated. Got to think of a better way to do this besides import(). AUTHOR
Original idea and code from Ben Tilly's AbstractClass http://www.perlmonks.org/index.pl?node_id=44300&lastnode_id=45341 Embraced and Extended by Michael G Schwern <schwern@pobox.com> SEE ALSO
Class::Virtual perl v5.10.1 2007-10-23 Class::Virtually::Abstract(3pm)