Re: [basex-talk] some questions over the profile module

Hi Jean-Marc,

1. The following code

declare function local:sequence($nb){for $i in 1 to xs:integer($nb) return $i}; prof:time(fn:count(local:sequence(1000000000000000000))) return 4.94 ms.

the InfoView will give you some hints what’s going on. The reason is that your code is compiled and simplified to the following query..

prof:time(fn:count((1 to 1000000000000000000)))

...which can then be evaluated in constant time.

2. It seems that you somehow call the fn:trace function in the profile

module. Is there a way to catch the returned values of these functions?

Currently no. You can use the prof:current-ns() function instead:

let $start := prof:current-ns() let $void := prof:void((1 to 10000000)[. = 1]) let $end := prof:current-ns() let $ms := ($end - $start) div 1000000 return $ms || ' ms'

Hope this helps, Christian