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* Improve speed with indexes

  For large table adjustments during VACUUM FULL, it is faster to cluster
  or reindex rather than update the index.  Also, index updates can bloat
  the index.

>
>   http://archives.postgresql.org/pgsql-hackers/2007-03/msg00024.php
This commit is contained in:
Bruce Momjian 2007-04-02 22:49:03 +00:00
parent 3a7d66b48a
commit 17285959c1
2 changed files with 12 additions and 8 deletions
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10
doc/TODO
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@ -2,7 +2,7 @@
PostgreSQL TODO List
====================
Current maintainer: Bruce Momjian (bruce@momjian.us)
Last updated: Mon Apr 2 18:46:07 EDT 2007
Last updated: Mon Apr 2 18:48:47 EDT 2007
The most recent version of this document can be viewed at
http://www.postgresql.org/docs/faqs.TODO.html.
@ -1169,9 +1169,11 @@ Vacuum
* Improve speed with indexes
For large table adjustments during VACUUM FULL, it is faster to
reindex rather than update the index. Also, index updates can
bloat the index.
For large table adjustments during VACUUM FULL, it is faster to cluster
or reindex rather than update the index. Also, index updates can bloat
the index.
http://archives.postgresql.org/pgsql-hackers/2007-03/msg00024.php
* Reduce lock time during VACUUM FULL by moving tuples with read lock,
then write lock and truncate table

10
doc/src/FAQ/TODO.html
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@ -8,7 +8,7 @@
<body bgcolor="#FFFFFF" text="#000000" link="#FF0000" vlink="#A00000" alink="#0000FF">
<h1><a name="section_1">PostgreSQL TODO List</a></h1>
<p>Current maintainer: Bruce Momjian (<a href="mailto:bruce@momjian.us">bruce@momjian.us</a>)<br/>
Last updated: Mon Apr 2 18:46:07 EDT 2007
Last updated: Mon Apr 2 18:48:47 EDT 2007
</p>
<p>The most recent version of this document can be viewed at<br/>
<a href="http://www.postgresql.org/docs/faqs.TODO.html">http://www.postgresql.org/docs/faqs.TODO.html</a>.
@ -1037,9 +1037,11 @@ first. There is also a developer's wiki at<br/>
<ul>
<li>Improve speed with indexes
<p> For large table adjustments during VACUUM FULL, it is faster to
reindex rather than update the index. Also, index updates can
bloat the index.
<p> For large table adjustments during VACUUM FULL, it is faster to cluster
or reindex rather than update the index. Also, index updates can bloat
the index.
</p>
<p> <a href="http://archives.postgresql.org/pgsql-hackers/2007-03/msg00024.php">http://archives.postgresql.org/pgsql-hackers/2007-03/msg00024.php</a>
</p>
</li><li>Reduce lock time during VACUUM FULL by moving tuples with read lock,
then write lock and truncate table