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pgstat: replace double lookup with IsSharedRelation() 

As the list of shared relations is fixed, we can just dispatch based
IsSharedRelation(), instead of first trying to look up stats for a non-shared
rel and falling back to shared stats.

Author: "Drouvot, Bertrand" <bertranddrouvot.pg@gmail.com>
Reviewed-by: Bharath Rupireddy <bharath.rupireddyforpostgres@gmail.com>
Reviewed-by: Andres Freund <andres@anarazel.de
Discussion: https://postgr.es/m/8c1851a2-a98e-e1bc-7729-37b0b95f66ec@gmail.com
This commit is contained in:
Andres Freund 2022-11-20 10:53:31 -08:00
parent b62303794e
commit 061bf98fb8
1 changed files with 2 additions and 11 deletions
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13
src/backend/utils/activity/pgstat_relation.c
View File

@ -25,6 +25,7 @@
#include "utils/pgstat_internal.h"
#include "utils/rel.h"
#include "utils/timestamp.h"
#include "catalog/catalog.h"
/* Record that's written to 2PC state file when pgstat state is persisted */
@ -437,17 +438,7 @@ pgstat_update_heap_dead_tuples(Relation rel, int delta)
PgStat_StatTabEntry *
pgstat_fetch_stat_tabentry(Oid relid)
{
PgStat_StatTabEntry *tabentry;
tabentry = pgstat_fetch_stat_tabentry_ext(false, relid);
if (tabentry != NULL)
return tabentry;
/*
* If we didn't find it, maybe it's a shared table.
*/
tabentry = pgstat_fetch_stat_tabentry_ext(true, relid);
return tabentry;
return pgstat_fetch_stat_tabentry_ext(IsSharedRelation(relid), relid);
}
/*