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Add buffer access counters to pg_stat_statements.

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This uses the same infrastructure with EXPLAIN BUFFERS to support
{shared|local}_blks_{hit|read|written} andtemp_blks_{read|written}
columns in the pg_stat_statements view. The dumped file format
also updated.

Thanks to Robert Haas for the review.
This commit is contained in:
Itagaki Takahiro
2010-01-08 00:38:20 +00:00
parent b1ee6daf2f
commit 8964dbd51e
3 changed files with 169 additions and 55 deletions
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12
contrib/pg_stat_statements/pg_stat_statements.sql.in
View File

@ -1,4 +1,4 @@
/* $PostgreSQL: pgsql/contrib/pg_stat_statements/pg_stat_statements.sql.in,v 1.1 2009/01/04 22:19:59 tgl Exp $ */
/* $PostgreSQL: pgsql/contrib/pg_stat_statements/pg_stat_statements.sql.in,v 1.2 2010/01/08 00:38:19 itagaki Exp $ */
-- Adjust this setting to control where the objects get created.
SET search_path = public;
@ -15,7 +15,15 @@ CREATE FUNCTION pg_stat_statements(
OUT query text,
OUT calls int8,
OUT total_time float8,
OUT rows int8
OUT rows int8,
OUT shared_blks_hit int8,
OUT shared_blks_read int8,
OUT shared_blks_written int8,
OUT local_blks_hit int8,
OUT local_blks_read int8,
OUT local_blks_written int8,
OUT temp_blks_read int8,
OUT temp_blks_written int8
)
RETURNS SETOF record
AS 'MODULE_PATHNAME'