From 915116bc62db2aaec7001bde6610128f4cbd29f9 Mon Sep 17 00:00:00 2001
From: Simon Riggs <simon@2ndQuadrant.com>
Date: Fri, 15 Oct 2010 10:17:12 +0100
Subject: [PATCH] Correct WAL space calculation formula in docs.
Error pointed out by Fujii Masao, though not his patch.
---
doc/src/sgml/wal.sgml | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/doc/src/sgml/wal.sgml b/doc/src/sgml/wal.sgml
index 2726acb8a7e..5678d6ebdd8 100644
--- a/doc/src/sgml/wal.sgml
+++ b/doc/src/sgml/wal.sgml
@@ -450,9 +450,9 @@
<para>
There will always be at least one WAL segment file, and will normally
- not be more than (2 + <varname>checkpoint_completion_target</varname>) * <varname>checkpoint_segments</varname> + 1
- or <varname>checkpoint_segments</> + <xref linkend="guc-wal-keep-segments"> + 1
- files. Each segment file is normally 16 MB (though this size can be
+ not be more files than the higher of <xref linkend="guc-wal-keep-segments"> or
+ (2 + <varname>checkpoint_completion_target</varname>) * <varname>checkpoint_segments</varname> + 1.
+ Each segment file is normally 16 MB (though this size can be
altered when building the server). You can use this to estimate space
requirements for <acronym>WAL</acronym>.
Ordinarily, when old log segment files are no longer needed, they
--
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