Document that increasing the number of checkpoints segments or

checkpoint timeout can incrase the time needed for crash recovery, per
suggestion from Simon.

diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml
index e910706a3133609e414fc63355f3543e96ec7209..0227c4461bb6b5efbd4041a2a69629ea6a1aeca1 100644 (file)
--- a/doc/src/sgml/config.sgml
+++ b/doc/src/sgml/config.sgml
@@ -1,4 +1,4 @@
-
+
 
 
   Server Configuration
@@ -1584,9 +1584,10 @@ SET ENABLE_SEQSCAN TO OFF;
       
       
        
-        Maximum distance between automatic WAL checkpoints, in log
-        file segments (each segment is normally 16 megabytes). The
-        default is three segments.
+        Maximum number of log file segments between automatic WAL
+        checkpoints (each segment is normally 16 megabytes). The default
+        is three segments.  Increasing this parameter can increase the
+        amount of time needed for crash recovery.
         This parameter can only be set in the postgresql.conf
         file or on the server command line.
        
@@ -1602,6 +1603,8 @@ SET ENABLE_SEQSCAN TO OFF;
        
         Maximum time between automatic WAL checkpoints, in
         seconds. The default is five minutes (5min).
+        Increasing this parameter can increase the amount of time needed
+        for crash recovery.
         This parameter can only be set in the postgresql.conf
         file or on the server command line.