>> I would like to read two files in two different threads.
>>
>> I have made a first version reading the first then the second and it takes
>> 2.8s (native).
>>
>> I decided to make a threaded version and before any use of thread I realize=
>> d
>> that just linking no even using it to the threads library makes my first
>> version of the program to run in 12s !

This kind of trick can work when files are on different discs due to two 
I/O calls (even using blocking reading). But in a single thread using 
non-blocking reading should also work but it is more difficult to write.

FG