clojure http-kit version not using all CPU power

[alexandrejbr]

Clojure http-kit version is not using all CPU power on ubuntu 14.04 LTS (i don't think the problem is on the OS but I mentioned it anyway).

In my quad-core it reaches an average of ~70% virtual core (8 virtual cores) usage.

Other versions use almost all CPU power. Node.js uses nearly 100% in all virtual cores, and other versions like play and spray use ~97% in all virtual cores.

I think there may be a problem on clojure http-kit version of the test.

[hiddenbyte]

This might be because of the 'thread' parameter of http-kit server. This indicates the number of "threads to compute response from request", http-kit defaults to 4 when the parameter is not set.

A commit - 01eb5d7 - was made to set the 'thread' parameter with the value returned from 'Runtime.getRuntime().availableProcessors()' http://docs.oracle.com/javase/7/docs/api/java/lang/Runtime.html#availableProcessors%28%29.

This might 'solve' this issue.

[alexandrejbr]

Now it's worse:

• text: 45922.79 (~55% CPU)
• json_stock: 34126.00 (75% CPU)
• json_chesire: 40842.24 (65% CPU)
• json_clj-json: 41372.61 (~60% CPU)

Can you reproduce this behavior in your machine?

[hiddenbyte]

How many threads "to compute" were printed when executed ?

[alexandrejbr]

8