From: Александр Белинский <avinfo79@gmail.com>
To: pgsql-performance@postgresql.org
Subject: Function execute slow down in 9.2
Date: Mon, 12 Aug 2013 17:59:43 +0300
Message-ID: <5208F85F.50706@gmail.com> (raw)
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Hi!
I can't explain why function is slow down on same data.
Postgresql.conf the same, hardware is more powerful.
Diffrents is postgresql version
Here it;s my tests
Server 1 PSQL 9.1
FIRST RUN
EXPLAIN (ANALYZE, BUFFERS) SELECT webclient.prc_ti_cache_alloc_dbl_update(
21325134
);
'Result (cost=0.00..0.26 rows=1 width=0) (actual
time=1399.586..1399.587 rows=1 loops=1)'
' Buffers: shared hit=40343 read=621'
'Total runtime: 1399.613 ms'
SECOND RUN
'Result (cost=0.00..0.26 rows=1 width=0) (actual time=42.540..42.541
rows=1 loops=1)'
' Buffers: shared hit=37069'
'Total runtime: 42.558 ms'
THIRD RUN
'Result (cost=0.00..0.26 rows=1 width=0) (actual time=198.893..198.894
rows=1 loops=1)'
' Buffers: shared hit=37069'
'Total runtime: 198.908 ms'
Server 2 PSQL 9.2
FIRST RUN
EXPLAIN (ANALYZE, BUFFERS) SELECT webclient.prc_ti_cache_alloc_dbl_update(
21325134
);
'Result (cost=0.00..0.26 rows=1 width=0) (actual
time=1328.103..1328.104 rows=1 loops=1)'
' Buffers: shared hit=43081 read=233 written=36'
'Total runtime: 1328.129 ms'
SECOND RUN
'Result (cost=0.00..0.26 rows=1 width=0) (actual
time=1699.711..1699.712 rows=1 loops=1)'
' Buffers: shared hit=42919'
'Total runtime: 1699.737 ms'
THIRD RUN
'Result (cost=0.00..0.26 rows=1 width=0) (actual
time=1907.947..1907.948 rows=1 loops=1)'
' Buffers: shared hit=42869'
'Total runtime: 1907.965 ms'
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Subject: Re: Function execute slow down in 9.2
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