Add description of log_statement_stats's function (total statement stats

rather than per-stage stats).

diff --git a/doc/src/sgml/runtime.sgml b/doc/src/sgml/runtime.sgml
index 73bd7fd8352e18c32da1d2cecc00e59f295641a4..33684e6201ea5200f99513e9e492b5708347d365 100644 (file)
--- a/doc/src/sgml/runtime.sgml
+++ b/doc/src/sgml/runtime.sgml
@@ -1,5 +1,5 @@
 
 
 
@@ -2182,7 +2182,9 @@ SET ENABLE_SEQSCAN TO OFF;
        
         For each query, write performance statistics of the respective
         module to the server log. This is a crude profiling
-        instrument. All of these options are disabled by default.
+        instrument.  log_statement_stats reports total
+        statement statistics, while the others report per-state statistics.
+        All of these options are disabled by default.
         Only superusers can turn off any of these options if they have
         been enabled by the administrator.