On 06/ago/08, at 16:04, Pavel Stehule wrote:
2008/8/6 Giorgio Valoti <giorgio_v@xxxxxxx>:
Hi all, I think I've read somewhere in the documentation that the
invocation
of functions written in procedural languages (with the exception of
plpgsql)
incur in performance hit due to the call the language interpreter.
Is that
correct or am I completely off track?
it's depend. Start of interpret is only one overhead.
Other is date
conversions to language compatible types (without C and plpgsql).
Only plpgsql share expression evaluation with database, so it's
specific overhead only for plpgsql.
So is plpgsql slower on date conversion than other languages? Just
curious: why does shared evaluation add some overhead?
[…]
but you can load perl after server start - look on preload_libraries
section in postgresql.conf
Nice to know.
Thank you Pavel
--
Giorgio Valoti
