Re: Poor performance after upgrate to xubuntu 17.10

[Charly <carl.weierstrass@googlemail.com>]

> 
> I had a little look at your code.  The main part is
> 
>        declare
> 
>           Worker : Ta_Parallel.Processes
>             (1 .. Ta_Types_Pkg.Proc_Id_Type(Task_Count));
> 
>        begin
> 
>           Ta_Parallel.Initialize(Verbose_Level);
> 
>           for Idx in Worker'Range loop
> 
>              Worker (Idx).Start (Idx);
> 
>           end loop;
> 
>           for Idx in Worker'Range loop
> 
>              Worker (Idx).Wait (Res);
> 
>           end loop;
> 
>        end;
> 
> The problem here is the Wait line.  After you start the tasks you then 
> wait for each one to complete *in order*.  So you are at the mercy of 
> the scheduling algorithm in how it schedules the first task.  Maybe when 
> N=4 it starts 1, 2 3, 4 but completes 4, 3, 2, 1!
> 
> When you exit the block all tasks will have completed so you don't 
> really need the Wait.
> 
> Chris
> 
> -- 
> sig pending (since 1995)

Hi Chris,

I tried your suggestion, but I didn't have any noticeable effekt. 

Charly