Re: Pl/Perl function: Speed of the First time executing pl/perl function in connection; - Mailing list pgsql-hackers

From Tom Lane
Subject Re: Pl/Perl function: Speed of the First time executing pl/perl function in connection;
Date
Msg-id 370.1226853984@sss.pgh.pa.us
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In response to Re: Pl/Perl function: Speed of the First time executing pl/perl function in connection;  (Andrew Dunstan <andrew@dunslane.net>)
Responses Re: Pl/Perl function: Speed of the First time executing pl/perl function in connection;  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-hackers
Andrew Dunstan <andrew@dunslane.net> writes:
> Is a one-off cost per connection of 100ms so bothersome?

I think the complaint is that there's no obvious reason for it to be so
high.

On my Fedora 9 machine, the overhead to start plperl seems to be about
40 msec.  This compares unfavorably to the time to start perl from the
command line, which is under 4 msec.  I see that /usr/bin/perl pulls in
libperl.so, so it's paying the same shlib overhead as we do.  How is it
that we take ten times longer to start up?
        regards, tom lane


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