From 8962b6106b4d6672675f83be11a5e0effcdd36fc Mon Sep 17 00:00:00 2001
From: Neil Conway <neilc@samurai.com>
Date: Wed, 30 Mar 2005 05:05:01 +0000
Subject: [PATCH] Document that the "-P" option to pg_autovacuum is insecure on
many platforms, and suggest using ~/.pgpass instead.
---
contrib/pg_autovacuum/README.pg_autovacuum | 13 ++++++++-----
1 file changed, 8 insertions(+), 5 deletions(-)
diff --git a/contrib/pg_autovacuum/README.pg_autovacuum b/contrib/pg_autovacuum/README.pg_autovacuum
index 9b8a64d6a4f..64c5eb5353a 100644
--- a/contrib/pg_autovacuum/README.pg_autovacuum
+++ b/contrib/pg_autovacuum/README.pg_autovacuum
@@ -36,9 +36,9 @@ list.
pg_autovacuum requires that the statistics system be enabled and
reporting row level stats. The overhead of the stats system has been
-shown to have a significant cost under certain workloads. For
-instance, a tight loop of queries performing "select 1" was found to
-run nearly 30% slower when stats were enabled. However, in practice,
+shown to be significant under certain workloads. For instance, a
+tight loop of queries performing "select 1" was found to run nearly
+30% slower when row-level stats were enabled. However, in practice,
with more realistic workloads, the stats system overhead is usually
nominal.
@@ -127,8 +127,11 @@ pg_autovacuum has the following optional arguments:
-U username: Username pg_autovacuum will use to connect with, if not
specified the current username is used.
-P password: Password pg_autovacuum will use to connect with. *WARNING*
- When installed as a Windows Service, this option will be stored in plain
- text in the registry.
+ This option is insecure. When installed as a Windows Service, this
+ option will be stored in plain text in the registry. When used with
+ most Unix variants, other users will be able to see the argument to
+ the "-P" option via ps(1). The ~/.pgpass file can be used to
+ specify a password more securely.
-H host: host name or IP to connect to.
-p port: port used for connection.
-h help: list of command line options.
--
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