excution time for plpgsql function and subfunction
Hey List,
kind of a simple question :
I'm using the postgis_topology extension,
and I'm trying to figure where the slowness comes from when importing data.
It involves plpgsql function calling other plpgsql functions, insert,
update, etc etc.
I know I can use explain analyze for one querry, but I don't know how to
get details of how much time takes each sub-function called by a main
function.
Thus it is very difficult to guess where is the bottleneck.
Thanks ,cheers,
Rémi-C
From: pgsql-general-owner@postgresql.org [mailto:pgsql-general-owner@postgresql.org] On Behalf Of Rémi Cura
Sent: Friday, January 10, 2014 4:10 AM
To: PostgreSQL General
Subject: [GENERAL] excution time for plpgsql function and subfunction
Hey List,
kind of a simple question :
I'm using the postgis_topology extension,
and I'm trying to figure where the slowness comes from when importing data.
It involves plpgsql function calling other plpgsql functions, insert, update, etc etc.
I know I can use explain analyze for one querry, but I don't know how to get details of how much time takes each sub-function called by a main function.
Thus it is very difficult to guess where is the bottleneck.
Thanks ,cheers,
Rémi-C
You could use auto_explain module to get info you are looking for. It'll be logged in pg_log.
Read about it in the docs:
http://www.postgresql.org/docs/9.2/static/auto-explain.html
Regards,
Igor Neyman
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On Fri, 2014-01-10 at 10:10 +0100, Rémi Cura wrote:
Hey List,
kind of a simple question :I'm using the postgis_topology extension,
and I'm trying to figure where the slowness comes from when importing data.It involves plpgsql function calling other plpgsql functions, insert,
update, etc etc.I know I can use explain analyze for one querry, but I don't know how to
get details of how much time takes each sub-function called by a main
function.Thus it is very difficult to guess where is the bottleneck.
Shameless plug, but here is how I do it:
http://blog.guillaume.lelarge.info/index.php/post/2012/03/31/Profiling-PL/pgsql-functions
--
Guillaume
http://blog.guillaume.lelarge.info
http://www.dalibo.com
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Thanks all =)
Cheers,
Rémi-C
2014/1/13 Guillaume Lelarge <guillaume@lelarge.info>
Show quoted text
On Fri, 2014-01-10 at 10:10 +0100, Rémi Cura wrote:
Hey List,
kind of a simple question :I'm using the postgis_topology extension,
and I'm trying to figure where the slowness comes from when importingdata.
It involves plpgsql function calling other plpgsql functions, insert,
update, etc etc.I know I can use explain analyze for one querry, but I don't know how to
get details of how much time takes each sub-function called by a main
function.Thus it is very difficult to guess where is the bottleneck.
Shameless plug, but here is how I do it:
http://blog.guillaume.lelarge.info/index.php/post/2012/03/31/Profiling-PL/pgsql-functions
--
Guillaume
http://blog.guillaume.lelarge.info
http://www.dalibo.com