Re: Re: Dreaming of a Better Profiler

Yes. It uses Perl's debugger hooks so it will almost certainly suffer from the same problems as Devel::DProf. As far as I was able to determine the bugs in Devel::DProf are actually bugs in Perl's debugger.

-sam

Comment on Re: Re: Dreaming of a Better Profiler

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Re: Re: Re: Dreaming of a Better Profiler by Anonymous Monk on May 26, 2004 at 03:06 UTC
I don't think so. I've used both. I've never had much luck with Devel::DProf. I've never had a problem with Devel::Profile. My understanding of the problem with Devel::DProf, is that is can't handle subs that don't return (exceptions, gotos, etc). Devel::Profile handles such situations.	[reply]
Re: Re: Re: Re: Dreaming of a Better Profiler by samtregar (Abbot) on May 26, 2004 at 04:06 UTC
That's very interesting. A quick test against Krang shows that you are correct - it can profile krang_publish but Devel::DProf reliably seg-faults. I'm definitely going to study the code to see if I can figure out why it doesn't have the same problems as Devel::DProf, even though it uses the debugger. Thanks! -sam	[reply]
Re: Re: Re: Re: Re: Dreaming of a Better Profiler by chip (Curate) on Jun 01, 2004 at 16:04 UTC
I just contributed some improvements to Devel::Profile that should make it more stable. Now the only bug I know for sure remains is actually in the core, namely, that you can't call an XS function from &DB::sub before you call &$DB::sub, or the target one gets the wrong default package. Yuck. -- Chip Salzenberg, Free-Floating Agent of Chaos	[reply]