On Fri Jul 15 12:32:30 2016, mt1...@gmail.com wrote:
> With Rakudo version 2016.06-234-g0189851 built on MoarVM version
> 2016.06-9-g8fc21d5
> implementing Perl 6.c on a Asus laptop running Fedora 23 I see the
> following happen. Running the code below is doing well but when the code
> in the critical section gets complex (e.g. '$r += [+] $i, 3, 4, 5, 6, 7,
> 8, 9, 10;'), the program does not finish. The output of the '+' and '-'
> stops but the cpu (2 or 3 of 8) will go to 100% usage (user time, not
> system time).
>
>
> my Semaphore $s .= new(1);
>
> my @p;
> my $r;
> for ^4000 {
> my $i = $_;
>
> @p.push: Promise.start( {
>
> $s.acquire;
> print "+";
>
> # critical code area
> $r += $i;
>
> $s.release;
> print "-";
> }
> );
> }
>
This is largely addressed by:
https://github.com/MoarVM/MoarVM/commit/236058a6c8bd91eacf100047831ac77e4ad486b7
However, there is an occasional GC orchestration hang that I'm still looking
into.
