Perl threads problems?

[Chris Ross]

So, I spent a while building perl on my SS20 running netbsd-6. When running
make test the first time, it eventually got to running cpan/Digest-MD5/t/threads,
which was chewing close to 200% CPU (2xHypersparc machine) for over 20
hours. I killed it, and later restarted the testing for unrelated reasons.

Today, the testing got to t/op/threads, and seemed to be locked similarly. Was
chewing about 100% CPU when I was looking at it, with well over 500 minutes
of CPU time. I killed that, and it proceeded. The section of my make test log shows:

t/op/threads-dirh..............................................ok
t/op/threads...................................................[1] Terminated /data/NetBSD/pkg...
# Failed at ./test.pl line 828
# got ""
# expected "ok"
# PROG:
# package Foo;
# sub new { bless {},shift }
# package main;
# use threads;
# use Scalar::Util qw(weaken);
# my $object = Foo->new;
# my $ref = $object;
# weaken $ref;
# threads->create(sub { $ref = $object } )->join; # $ref = $object causes problems
# print "ok";
# STATUS: 36608
FAILED at test 3
t/op/tie.......................................................ok
t/op/tie_fetch_count...........................................ok

And strangely enough, an hour or so later it got back to cpan/Digest-MD5/t/threads,
and ran successfully in minimal time.


Is this something that's a problem with the sparc port? Or NetBSD in general?
Should I turn off support for threads in my sparc pkgsrc perl build?

- Chris

[Martin Husemann]

Post by Chris Ross
Is this something that's a problem with the sparc port? Or NetBSD in general?
Should I turn off support for threads in my sparc pkgsrc perl build?

It is sparc specific. I see one of the atf mutex tests fail most of the time
on SMP sparc hardware.

Martin

[Chris Ross]

Post by Martin Husemann

Post by Chris Ross
Is this something that's a problem with the sparc port? Or NetBSD in general?
Should I turn off support for threads in my sparc pkgsrc perl build?

It is sparc specific. I see one of the atf mutex tests fail most of the time
on SMP sparc hardware.

Ahh. Okay. Well, I guess I'll just turn off threads for perl, then,
to avoid the
potential of someone trying to use them.

Is there a PR for this issue? Is anyone looking into it?
Hardware/arch just
too old, I guess.

- Chris

[Martin Husemann]

Post by Chris Ross
Is there a PR for this issue? Is anyone looking into it?

Dunno if there is a PR, but I plan to look into it. I'm trying to get
the number of atf failures on sparc down to 0 as well now that sparc64 is
there.

Martin