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Add an EXPLAIN (BUFFERS) option to show buffer-usage statistics.

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This patch also removes buffer-usage statistics from the track_counts
output, since this (or the global server statistics) is deemed to be a better
interface to this information.

Itagaki Takahiro, reviewed by Euler Taveira de Oliveira.
This commit is contained in:
Robert Haas
2009-12-15 04:57:48 +00:00
parent 6f1bf75d50
commit cddca5ec13
25 changed files with 274 additions and 140 deletions
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12
src/backend/executor/execMain.c
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@ -26,7 +26,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/executor/execMain.c,v 1.337 2009/12/11 18:14:43 tgl Exp $
* $PostgreSQL: pgsql/src/backend/executor/execMain.c,v 1.338 2009/12/15 04:57:47 rhaas Exp $
*
*-------------------------------------------------------------------------
*/
@ -180,7 +180,7 @@ standard_ExecutorStart(QueryDesc *queryDesc, int eflags)
*/
estate->es_snapshot = RegisterSnapshot(queryDesc->snapshot);
estate->es_crosscheck_snapshot = RegisterSnapshot(queryDesc->crosscheck_snapshot);
estate->es_instrument = queryDesc->doInstrument;
estate->es_instrument = queryDesc->instrument_options;
/*
* Initialize the plan state tree
@ -859,7 +859,7 @@ InitResultRelInfo(ResultRelInfo *resultRelInfo,
Relation resultRelationDesc,
Index resultRelationIndex,
CmdType operation,
bool doInstrument)
int instrument_options)
{
/*
* Check valid relkind ... parser and/or planner should have noticed this
@ -914,10 +914,8 @@ InitResultRelInfo(ResultRelInfo *resultRelInfo,
palloc0(n * sizeof(FmgrInfo));
resultRelInfo->ri_TrigWhenExprs = (List **)
palloc0(n * sizeof(List *));
if (doInstrument)
resultRelInfo->ri_TrigInstrument = InstrAlloc(n);
else
resultRelInfo->ri_TrigInstrument = NULL;
if (instrument_options)
resultRelInfo->ri_TrigInstrument = InstrAlloc(n, instrument_options);
}
else
{