[Omaha.pm] Intermittent Perl error...

Sterling Hanenkamp sterling at hanenkamp.com
Wed Nov 3 23:37:29 PDT 2010


Awesome. At least you got it figured out. :)

2010/11/3 Dan Linder <dan at linder.org>

> *sigh*
>
> Turns out this was not the intermittent error I thought it was.  I talked
> with the user some more, and it turns out they had customized the CGI and
> the library file so it doesn't contain this second subroutine.
>
> BUT, they forgot to update all the URLs in their system.  When they called
> their customized CGI that only used the first subroutine, all was well.
>  When the user clicked on one of the old URLs pointing to the original code
> (that called both subroutines), it was crashing because the second
> subroutine isn't defined in the module anymore...  (Don't know why.)
>
> Thanks for all the feed-back on this, sorry it was a red herring.
>
> Glad to know it wasn't an instability in the Perl libraries!
>
> Dan
>
>
> On Sun, Oct 31, 2010 at 08:00, Jay Hannah <jhannah at mutationgrid.com>wrote:
>
>> On Oct 30, 2010, at 3:29 PM, Dan Linder wrote:
>> > It's a vanilla CGI on a Solaris 10 (Sparc) box.
>>
>> Huh. Ya, with vanilla CGI (all Perl re-interpretted from scratch on every
>> single web hit) I don't know how that error is possible if the source code
>> isn't changing.   :(
>>
>> > If we're still stumped, I'm hoping to enlist a co-worker who has
>> experience with Dtrace so we may go that route.  I'm hoping we can log
>> memory, swap, or process related errors.
>>
>> If it's only happening every few weeks graphing out your long term system
>> trends (memory, process count, etc.) might show a correlation?
>> http://www.cacti.net/
>>
>> Make sure to tell us what you figure out.   :)
>>
>> HTH,
>>
>> Jay Hannah
>> Software Architect
>> jhannah at mutationgrid.com | http://mutationgrid.com | 1-402-598-7782
>>
>>
>>
>>
>>
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>
>
>
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-- 
Andrew Sterling Hanenkamp
sterling at hanenkamp.com
785.370.4454
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