RE: Big Performance drop of Exceptions in UDFs between V11.2 and 13.4

   >  -----Original Message-----
   >  From: Justin Pryzby <pryzby@telsasoft.com>
   >  Sent: Sunday, August 22, 2021 20:43
   >  To: Ranier Vilela <ranier.vf@gmail.com>
   >  Cc: ldh@laurent-hasson.com; Tom Lane <tgl@sss.pgh.pa.us>; pgsql-
   >  performance@postgresql.org
   >  Subject: Re: Big Performance drop of Exceptions in UDFs between V11.2
   >  and 13.4
   >  
   >  On Sun, Aug 22, 2021 at 08:44:34PM -0300, Ranier Vilela wrote:
   >  > > If there is any way I can help further... I am definitely not able
   >  > > to do a dev environment and local build, but if we have a windows
   >  > > developer reproducing the issue between 11 and 12, then that
   >  should
   >  > > help. If someone makes a debug build available to me, I can provide
   >  > > additional help based on that.
   >  >
   >  > Please, download from this link (Google Drive):
   >  >
   >  > https://drive.google.com/file/d/13kPbNmk54lR6t-lwcwi-
   >  63UdM55sA27t/view
   >  > ?usp=sharing
   >  
   >  Laurent gave a recipe to reproduce the problem, and you seemed to be
   >  able to reproduce it, so I think Laurent's part is done.  The burden now
   >  lies with postgres developers to isolate the issue, and Andrew said he
   >  would bisect to look for the culprit commit.
   >  
   >  --
   >  Justin


Hello Ranier,
I am not sure what to do with that build. I am a Java/JavaScript guy these days. I haven't coded C/C++ in over 15 years
nowand I don't have a debugging environment 😊 If I can run the scenario I created and get a log file, that I can do if
thathelps.
 

Justin, I think I agree with you although I am concerned that none of you were able to truly reproduce the results I
havenow reproduced on plain base-line installs on 2 VMs (Windows Server 2012) and a laptop (Windows 10 pro), across
multipleversions of the installer (11, 12 and 13).
 

In any case, i'll do my best to help. If you think you have a fix and it's in one dll or exe and I can just manually
patcha 13.4 install and test again, I'll do that with pleasure.
 

Thank you,
Laurent.