Oh ok. But what is this command doing ? i'm gonna runn it today. I'll keep you posted. Here is some EXPLAIN ANALYZE from the querys :
Nested Loop (cost=0.00..353722.89 rows=124893 width=16) (actual time=261158.061..10304193.501 rows=99 loops=1) Join Filter: ((t2."X" >= (t1.x_min)::double precision) AND (t2."X" <= (t1.x_max)::double precision) AND (t2."Y" >= (t1.y_min)::double precision) AND (t2."Y" <= (t1.y_max)::double precision)) -> Seq Scan on gps_22 t1 (cost=0.00..3431.80 rows=177480 width=44) (actual time=0.036..1399.621 rows=177480 loops=1) -> Materialize (cost=0.00..20572.83 rows=57 width=20) (actual time=0.012..10.274 rows=2924 loops=177480) -> Seq Scan on adresses_22 t2 (cost=0.00..20572.55 rows=57 width=20) (actual time=1570.240..1726.376 rows=2924 loops=1) Filter: ((id_maille_200m)::text = '0'::text)Total runtime: 10304211.648 ms Nested Loop (cost=0.00..88186069.17 rows=33397899 width=16) (actual time=3060.373..3060.373 rows=0 loops=1) Join Filter: ((t2."X" >= (t1.x_min)::double precision) AND (t2."X" <= (t1.x_max)::double precision) AND (t2."Y" >= (t1.y_min)::double precision) AND (t2."Y" <= (t1.y_max)::double precision)) -> Seq Scan on gps_31 t1 (cost=0.00..3096.38 rows=161738 width=44) (actual time=4.612..442.935 rows=161738 loops=1) -> Materialize (cost=0.00..12562.25 rows=16726 width=20) (actual time=0.012..0.012 rows=0 loops=161738) -> Seq Scan on adresses_31 t2 (cost=0.00..12478.62 rows=16726 width=20) (actual time=1504.082..1504.082 rows=0 loops=1) Filter: ((id_maille_200m)::text = '0'::text)Total runtime: 3060.469 ms Nested Loop (cost=0.00..84287659.70 rows=31920943 width=64) (actual time=220198.891..32665395.631 rows=21409 loops=1) Join Filter: ((t2."X" >= (t1.x_min)::double precision) AND (t2."X" <= (t1.x_max)::double precision) AND (t2."Y" >= (t1.y_min)::double precision) AND (t2."Y" <= (t1.y_max)::double precision)) -> Seq Scan on gps_67 t1 (cost=0.00..2350.55 rows=121555 width=44) (actual time=0.038..1570.994 rows=121555 loops=1) -> Materialize (cost=0.00..14072.09 rows=21271 width=20) (actual time=0.001..34.394 rows=22540 loops=121555) -> Seq Scan on adresses_67 t2 (cost=0.00..13965.74 rows=21271 width=20) (actual time=0.032..1283.087 rows=22540 loops=1) Filter: ((id_maille_200m)::text = '0'::text)Total runtime: 32665478.631 ms Rude - Last Territory Ou écouter ?http://www.deezer.com/fr/music/last-territory/the-last-hope-3617781 (Post-apocalyptic Metal)http://www.deezer.com/fr/music/rude-undertaker (Pop-Rock) Ou acheter ?La Fnachttp://recherche.fnac.com/fmia14622213/Last-Territory http://recherche.fnac.com/fmia14770622/Rude-Undertaker iTuneshttp://itunes.apple.com/us/artist/last-territory/id533857009?ign-mpt=uo%3D4 > Date: Wed, 26 Sep 2012 19:30:30 +0300 > Subject: Re: [PERFORM] Same query doing slow then quick > From: lys...@gmail.com > To: ffw_r...@hotmail.com > CC: pgsql-performance@postgresql.org > > On 26 September 2012 19:09, FFW_Rude <ffw_r...@hotmail.com> wrote: > > Could you explain what you are asking me to do because i don't really know > > what i'm doing... > > postgresql-contrib packages contains pgbench tool on Ubuntu. > > For example postgresql-contrib-9.1_9.1.3-2_i386.deb on Ubuntu 12.04 contains: > /usr/lib/postgresql/9.1/bin/pgbench > > > > i don't have pgbench in it. It is still pgbench command not found... > > You need to run pgbench as postgres user. > For example on CentOS: > # su - postgres > $ pgbench -i pgbench && pgbench -c 10 -t 10000 pgbench > > > -- > With best regards, > Nikolay
