[Koha] Test PLACK performance Koha 16.11

[Alberto Branco]

Hi all,
I have 2 Koha instances 16.11, both ubuntu 16.04 and apache 2.4.18.
One of them has memcached and plack active, they both seem to have equal
performance.
These 2 instances have mysql 5.6.26 and the same database for testing
purposes.
Is there a way to find out if plack is working 100%?
Can't really find differences in performance.

Best Regards
Alberto Branco