Dear list,


I am working on some tools written in OCaml (compiled by OCaml version
4.01.0).

This morning I changed some code, compiled it and let it processing some
large data (~ 4G), it never stops after over 2 hours.

I feed the tool with a tiny input which took less than 1 second to process
before, and  I figured out that now it takes around 2.5 minutes before
entering into "main" function!

I tried to clean the whole codebase, and recompile it ( I use ocamlbuild
4.01.0), but the same wired situation still happens..

I did this:

    ltrace ./init.native input

and I got this output flushing out for a very long time (sorry mail list
blocks my large image.. ):

http://i.stack.imgur.com/sEkKk.png



Is anyone aware this kind of issue before..? Am I messed up something..?
I have been working on OCaml for a relatively long time and I didn't
encounter this kind of stuff before...


Sincerely,
Shuai