thomasmckay @ #theforeman requested that I file a bug report and provide example code related to a possible 10x runtime slowdown when using apipie to enumerate hosts via TheForeman API.
this repo contains nearly the bare minimum use-case. $work requires
Kerberos. I've produced a clever hack in ext/net_http.rb to enable Kerberos
for apipie (and anything else based on Net::HTTP).
I originally chose HTTPI because it supported curb, which is one of the only
Ruby HTTP libraries with Kerberos support. however, since HTTPI is generic, it
was trivial to run Net::HTTP + ext/net_http.rb. this combination seems to be
faster than HTTPI with curb, giving me confidence that ext/net_http.rb
does not introduce a significant performance hit.
tests were run one at a time and in order. tests were performed multiple times, but no data analysis was done beyond visually ensuring the results "looked close" between runs.
here are some sample runs:
% bundle exec ./benchmark/apipie.rb https://theforeman.example.com
user system total real
0.000000 0.000000 0.000000 ( 0.000393)
0.210000 0.010000 0.220000 ( 3.783021)
13.030000 0.460000 13.490000 (191.435855)
Hosts collected: 78
% bundle exec ./benchmark/httpi-curb.rb https://theforeman.example.com
user system total real
0.000000 0.000000 0.000000 ( 0.000009)
0.010000 0.000000 0.010000 ( 0.091757)
0.770000 0.100000 0.870000 ( 6.935639)
Hosts collected: 78
% bundle exec ./benchmark/httpi-net_http.rb https://theforeman.example.com
user system total real
0.000000 0.000000 0.000000 ( 0.000006)
0.030000 0.000000 0.030000 ( 0.110068)
0.960000 0.120000 1.080000 ( 6.727047)
Hosts collected: 78