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Increase the default value of cpu_index_tuple_cost from 0.001 to 0.005.

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This shouldn't affect simple indexscans much, while for bitmap scans that
are touching a lot of index rows, this seems to bring the estimates more
in line with reality.  Per recent discussion.
This commit is contained in:
Tom Lane
2006-06-05 03:03:42 +00:00
parent eed6c9ed7e
commit e4de635a2b
3 changed files with 5 additions and 5 deletions
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4
doc/src/sgml/config.sgml
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@@ -1,4 +1,4 @@
<!-- $PostgreSQL: pgsql/doc/src/sgml/config.sgml,v 1.60 2006/06/05 02:49:58 tgl Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/config.sgml,v 1.61 2006/06/05 03:03:42 tgl Exp $ -->
<chapter Id="runtime-config">
<title>Server Configuration</title>
@@ -1831,7 +1831,7 @@ archive_command = 'copy "%p" /mnt/server/archivedir/"%f"' # Windows
<para>
Sets the planner's estimate of the cost of processing
each index entry during an index scan.
The default is 0.001.
The default is 0.005.
</para>
</listitem>
</varlistentry>