From 9d3b50244357ef4c4e3b6e01f91de599077179c8 Mon Sep 17 00:00:00 2001
From: Alvaro Herrera
Date: Fri, 25 Nov 2011 12:10:46 -0300
Subject: Improve logging of autovacuum I/O activity

This adds some I/O stats to the logging of autovacuum (when the
operation takes long enough that log_autovacuum_min_duration causes it
to be logged), so that it is easier to tune.  Notably, it adds buffer
I/O counts (hits, misses, dirtied) and read and write rate.

Authors: Greg Smith and Noah Misch
---
 src/include/miscadmin.h | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src/include')

diff --git a/src/include/miscadmin.h b/src/include/miscadmin.h
index 9d194171a56..4ee08fead6f 100644
--- a/src/include/miscadmin.h
+++ b/src/include/miscadmin.h
@@ -230,6 +230,10 @@ extern int	VacuumCostPageDirty;
 extern int	VacuumCostLimit;
 extern int	VacuumCostDelay;
 
+extern int	VacuumPageHit;
+extern int	VacuumPageMiss;
+extern int	VacuumPageDirty;
+
 extern int	VacuumCostBalance;
 extern bool VacuumCostActive;
 
-- 
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