| From: | tgl(at)svr1(dot)postgresql(dot)org (Tom Lane) |
|---|---|
| To: | pgsql-committers(at)postgresql(dot)org |
| Subject: | pgsql: Minor performance improvement: avoid unnecessary |
| Date: | 2005-04-20 15:48:37 |
| Message-ID: | 20050420154837.BB6275387E@svr1.postgresql.org |
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| Lists: | pgsql-committers |
Log Message:
-----------
Minor performance improvement: avoid unnecessary creation/unioning of
bitmaps for multiple indexscans. Instead just let each indexscan add
TIDs directly into the BitmapOr node's result bitmap.
Modified Files:
--------------
pgsql/src/backend/executor:
nodeBitmapAnd.c (r1.1 -> r1.2)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/executor/nodeBitmapAnd.c.diff?r1=1.1&r2=1.2)
nodeBitmapIndexscan.c (r1.1 -> r1.2)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/executor/nodeBitmapIndexscan.c.diff?r1=1.1&r2=1.2)
nodeBitmapOr.c (r1.1 -> r1.2)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/backend/executor/nodeBitmapOr.c.diff?r1=1.1&r2=1.2)
pgsql/src/include/nodes:
execnodes.h (r1.126 -> r1.127)
(http://developer.postgresql.org/cvsweb.cgi/pgsql/src/include/nodes/execnodes.h.diff?r1=1.126&r2=1.127)
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