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Reduce default value of max_prepared_transactions from 50 to 5. This

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saves nearly 700kB in the default shared memory segment size, which seems
worthwhile, and it is a feature that many users won't use anyway.  Per
Heikki's argument, there is no point in a compromise value --- those who
are using 2PC at all will probably want it at least equal to max_connections.
But we can't set it to zero by default without breaking the prepared_xacts
regression test.
This commit is contained in:
Tom Lane
2005-08-29 21:38:18 +00:00
parent 8aec77fb9f
commit 037709e0b3
4 changed files with 7 additions and 7 deletions
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4
doc/src/sgml/runtime.sgml
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@ -1,5 +1,5 @@
<!--
$PostgreSQL: pgsql/doc/src/sgml/runtime.sgml,v 1.348 2005/08/24 18:56:07 tgl Exp $
$PostgreSQL: pgsql/doc/src/sgml/runtime.sgml,v 1.349 2005/08/29 21:38:17 tgl Exp $
-->
<chapter Id="runtime">
@ -1179,7 +1179,7 @@ SET ENABLE_SEQSCAN TO OFF;
endterm="sql-prepare-transaction-title">).
Setting this parameter to zero disables the prepared-transaction
feature.
The default is 50.
The default is 5.
This option can only be set at server start.
</para>