% perl -MO=Terse -e 'my %hash' | wc -l
-e syntax OK
4
% perl -MO=Terse -e 'my %hash = ()' | wc -l
-e syntax OK
10The first one has less opcodes.
Note that you shouldn't use Apache::Status module on production
server as it adds quite a bit of overhead for each request.
References
- The mod_perl site’s URL: http://perl.apache.org
Devel::DProf
http://search.cpan.org/search?dist=DProfApache::DProf
http://search.cpan.org/search?dist=Apache-DBApache::VMonitor
http://search.cpan.org/search?dist=Apache-VMonitorGTop
http://search.cpan.org/search?dist=GTop
The home of the C library: http://www.home-of-linux.org/gnome/libgtop/BSD::Resource
http://search.cpan.org/search?dist=BSD-Resource