From: David Rowley <drowley@postgresql.org>
Date: Tue, 15 Sep 2020 23:25:46 +0000 (+1200)
Subject: Report resource usage at the end of recovery
X-Git-Tag: REL_14_BETA1~1653
X-Git-Url: http://git.postgresql.org/gitweb/?a=commitdiff_plain;h=10a5b35a0061d9747ac7594c5e6faa0513276593;p=postgresql.git

Report resource usage at the end of recovery

Reporting this has been rather useful in some recent recovery speedup
work.  It also seems like something that will be useful to the average DBA
too.

Author: David Rowley
Reviewed-by: Thomas Munro
Discussion: https://postgr.es/m/CAApHDvqYVORiZxq2xPvP6_ndmmsTkvr6jSYv4UTNaFa5i1kd%3DQ%40mail.gmail.com
---

diff --git a/src/backend/access/transam/xlog.c b/src/backend/access/transam/xlog.c
index a38371a64f9..61754312e26 100644
--- a/src/backend/access/transam/xlog.c
+++ b/src/backend/access/transam/xlog.c
@@ -76,6 +76,7 @@
 #include "utils/memutils.h"
 #include "utils/ps_status.h"
 #include "utils/relmapper.h"
+#include "utils/pg_rusage.h"
 #include "utils/snapmgr.h"
 #include "utils/timestamp.h"
 
@@ -7169,6 +7170,9 @@ StartupXLOG(void)
 		{
 			ErrorContextCallback errcallback;
 			TimestampTz xtime;
+			PGRUsage	ru0;
+
+			pg_rusage_init(&ru0);
 
 			InRedo = true;
 
@@ -7435,8 +7439,9 @@ StartupXLOG(void)
 			}
 
 			ereport(LOG,
-					(errmsg("redo done at %X/%X",
-							(uint32) (ReadRecPtr >> 32), (uint32) ReadRecPtr)));
+					(errmsg("redo done at %X/%X system usage: %s",
+							(uint32) (ReadRecPtr >> 32), (uint32) ReadRecPtr,
+							pg_rusage_show(&ru0))));
 			xtime = GetLatestXTime();
 			if (xtime)
 				ereport(LOG,