From 5a12c808cf223c7a5498217142cc9cb45efe033a Mon Sep 17 00:00:00 2001
From: Robert Haas <rhaas@postgresql.org>
Date: Tue, 26 Oct 2010 21:44:14 -0400
Subject: [PATCH] Note that effective_io_concurrency only affects bitmap heap
 scans.

Josh Kupershmidt
---
 doc/src/sgml/config.sgml | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/doc/src/sgml/config.sgml b/doc/src/sgml/config.sgml
index f178835d2b..898cdacbb1 100644
--- a/doc/src/sgml/config.sgml
+++ b/doc/src/sgml/config.sgml
@@ -1354,7 +1354,8 @@ SET ENABLE_SEQSCAN TO OFF;
          simultaneously.  Raising this value will increase the number of I/O
          operations that any individual <productname>PostgreSQL</> session
          attempts to initiate in parallel.  The allowed range is 1 to 1000,
-         or zero to disable issuance of asynchronous I/O requests.
+         or zero to disable issuance of asynchronous I/O requests. Currently,
+         this setting only affects bitmap heap scans.
         </para>
 
         <para>