Hello,
On FC2 I have perl-Qt-3.006-5
And this test is working very well and very fast with no noticable
delay...
On mandrake 10.0 with perl-Qt-mdk-3.006-5 is is working fine too.
Can you specify your OS & perl-Qt version ?
Ben
* Lombard, David N <[EMAIL PROTECTED]> [04-10-08 12:48]:
> I've just found out that the oscar perl-Tk rpm has a performance problem
> as shown in the following unit-test:
>
> #!/usr/bin/perl -w
> #
> use Tk;
> require Tk::Dialog;
>
> my $top = new MainWindow;
>
> sub show {
> my $dialog = $top->Dialog(
> -title => "Title",
> -bitmap => "error",
> -text => "Text message",
> -default_button => "OK",
> -buttons => [ "OK" ],
> );
>
> $dialog->Subwidget( 'bitmap' )->configure( -foreground => 'red' );
> $dialog->Subwidget( 'message' )->configure( -foreground => 'red' );
>
> $dialog->Show();
> exit 0;
> }
>
> my $button = $top->Button(
> -text => 'Show',
> -command => [ \&show ]
> );
> $button->pack();
>
> MainLoop;
>
> It's just a simple test of a proper error_window implementation.
>
> The performance problem: there's a noticeable several second delay
> within $dialog->show() between the point at which empty base window
> appears and when it is fully rendered. The delay is not slow rendering,
> but a several second pause before the content flashes up.
>
> When I was playing with this at home, trying to see exactly what the
> cause was, I saw no such delay. Repeating this test directly on my
> workstation, as opposed to the vmware oscar headnode whence this problem
> first appeared confirms the delay.
>
> The difference between the slow and fast environments was perl-Tk -- via
> the oscar rpm on vmware and the workstation, and via the cpan perl
> module at home. I installed the cpan version on the workstation, and
> performance is now fast.
>
> Conclusion: the oscar perl-Tk rpm has some performance problem. I don't
> know if this is a version problem, i.e., the rpm's 800.024 version v.
> cpan's 804.027, or if this is a problem with the rpm itself.
>
> BTW, the same performance issue is also demonstrated via some demo
> code...
>
> --
> David N. Lombard
>
> My comments represent my opinions, not those of Intel Corporation.
>
>
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--
Benoit des Ligneris Ph. D.
President de Revolution Linux http://www.revolutionlinux.com/
OSCAR Chair http://oscar.openclustergroup.org/
Chef de projet EduLinux http://www.edulinux.org/
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