PLPERL Function very Slow - Mailing list pgsql-general

From Alex
Subject PLPERL Function very Slow
Date
Msg-id 44F5A014.3070409@meerkatsoft.com
Whole thread Raw
Responses Re: PLPERL Function very Slow
List pgsql-general
Hi,
i am having a problem with a plperl function i am trying to write.
(using 8.1.4)

the function does a select (ca 30,000 rows) using

   spi_query($query); while (my $row = spi_fetchrow($handle))

and within the while loop inserts the record into a table using
spi_exec_query($query);

The initial select is pretty fast and first inserts very fast, but after
a few thousand inserts the inserts start to slow down until it crawls.
Writing the same in a normal perl script takes less than 90 seconds
while the function is taking 10 minutes.

My guess is that it is all memory related and was wondering if there is
a memory leak (as I read in some mails) or if there is a better way to
do what I want.

Also is there a way to commit transactions within a stored procedure /
function? I noticed that if I do a delete and insert within the same
function that the deletes are not committed until the function returns.

Thanks for any advice.

Alex





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