Make getrusage() output a little more readable

From 56bc77e09cd653d768722b8561b78b532d71860e Mon Sep 17 00:00:00 2001
From: Peter Eisentraut <peter_e@gmx.net>
Date: Fri, 14 Oct 2016 12:00:00 -0400
Subject: [PATCH] Make getrusage() output a little more readable

---
 doc/src/sgml/ref/vacuum.sgml       | 12 ++++++------
 src/backend/tcop/postgres.c        | 10 +++++-----
 src/backend/utils/misc/pg_rusage.c |  6 +++---
 3 files changed, 14 insertions(+), 14 deletions(-)

diff --git a/doc/src/sgml/ref/vacuum.sgml b/doc/src/sgml/ref/vacuum.sgml
index dee1c5b..275b5e0 100644
--- a/doc/src/sgml/ref/vacuum.sgml
+++ b/doc/src/sgml/ref/vacuum.sgml
@@ -253,27 +253,27 @@ <title>Examples</title>
 INFO:  index "onek_unique1" now contains 1000 tuples in 14 pages
 DETAIL:  3000 index tuples were removed.
 0 index pages have been deleted, 0 are currently reusable.
-CPU 0.01s/0.08u sec elapsed 0.18 sec.
+CPU: user: 0.08s, system: 0.01s, elapsed: 0.18s.
 INFO:  index "onek_unique2" now contains 1000 tuples in 16 pages
 DETAIL:  3000 index tuples were removed.
 0 index pages have been deleted, 0 are currently reusable.
-CPU 0.00s/0.07u sec elapsed 0.23 sec.
+CPU: user: 0.07s, system: 0.00s, elapsed: 0.23s.
 INFO:  index "onek_hundred" now contains 1000 tuples in 13 pages
 DETAIL:  3000 index tuples were removed.
 0 index pages have been deleted, 0 are currently reusable.
-CPU 0.01s/0.08u sec elapsed 0.17 sec.
+CPU: user: 0.08s, system: 0.01s, elapsed: 0.17s.
 INFO:  index "onek_stringu1" now contains 1000 tuples in 48 pages
 DETAIL:  3000 index tuples were removed.
 0 index pages have been deleted, 0 are currently reusable.
-CPU 0.01s/0.09u sec elapsed 0.59 sec.
+CPU: user: 0.09s, system: 0.01s, elapsed: 0.59s.
 INFO:  "onek": removed 3000 tuples in 108 pages
-DETAIL:  CPU 0.01s/0.06u sec elapsed 0.07 sec.
+DETAIL:  CPU: user: 0.06s, system: 0.01s, elapsed: 0.07s.
 INFO:  "onek": found 3000 removable, 1000 nonremovable tuples in 143 pages
 DETAIL:  0 dead tuples cannot be removed yet.
 There were 0 unused item pointers.
 Skipped 0 pages due to buffer pins.
 0 pages are entirely empty.
-CPU 0.07s/0.39u sec elapsed 1.56 sec.
+CPU: user: 0.39s, system: 0.07s, elapsed: 1.56s.
 INFO:  analyzing "public.onek"
 INFO:  "onek": 36 pages, 1000 rows sampled, 1000 estimated total rows
 VACUUM
diff --git a/src/backend/tcop/postgres.c b/src/backend/tcop/postgres.c
index 2347f1b..5853caf 100644
--- a/src/backend/tcop/postgres.c
+++ b/src/backend/tcop/postgres.c
@@ -4422,15 +4422,15 @@ ShowUsage(const char *title)
 
 	appendStringInfoString(&str, "! system usage stats:\n");
 	appendStringInfo(&str,
-				"!\t%ld.%06ld elapsed %ld.%06ld user %ld.%06ld system sec\n",
-					 (long) (elapse_t.tv_sec - Save_t.tv_sec),
-					 (long) (elapse_t.tv_usec - Save_t.tv_usec),
+				"!\t%ld.%06lds user, %ld.%06lds system, %ld.%06lds elapsed\n",
 					 (long) (r.ru_utime.tv_sec - Save_r.ru_utime.tv_sec),
 					 (long) (r.ru_utime.tv_usec - Save_r.ru_utime.tv_usec),
 					 (long) (r.ru_stime.tv_sec - Save_r.ru_stime.tv_sec),
-					 (long) (r.ru_stime.tv_usec - Save_r.ru_stime.tv_usec));
+					 (long) (r.ru_stime.tv_usec - Save_r.ru_stime.tv_usec),
+					 (long) (elapse_t.tv_sec - Save_t.tv_sec),
+					 (long) (elapse_t.tv_usec - Save_t.tv_usec));
 	appendStringInfo(&str,
-					 "!\t[%ld.%06ld user %ld.%06ld sys total]\n",
+					 "!\t[%ld.%06lds user, %ld.%06lds system total]\n",
 					 (long) user.tv_sec,
 					 (long) user.tv_usec,
 					 (long) sys.tv_sec,
diff --git a/src/backend/utils/misc/pg_rusage.c b/src/backend/utils/misc/pg_rusage.c
index 8781a38..cbaced7 100644
--- a/src/backend/utils/misc/pg_rusage.c
+++ b/src/backend/utils/misc/pg_rusage.c
@@ -61,11 +61,11 @@ pg_rusage_show(const PGRUsage *ru0)
 	}
 
 	snprintf(result, sizeof(result),
-			 "CPU %d.%02ds/%d.%02du sec elapsed %d.%02d sec",
-			 (int) (ru1.ru.ru_stime.tv_sec - ru0->ru.ru_stime.tv_sec),
-		  (int) (ru1.ru.ru_stime.tv_usec - ru0->ru.ru_stime.tv_usec) / 10000,
+			 "CPU: user: %d.%02ds, system: %d.%02ds, elapsed: %d.%02ds",
 			 (int) (ru1.ru.ru_utime.tv_sec - ru0->ru.ru_utime.tv_sec),
 		  (int) (ru1.ru.ru_utime.tv_usec - ru0->ru.ru_utime.tv_usec) / 10000,
+			 (int) (ru1.ru.ru_stime.tv_sec - ru0->ru.ru_stime.tv_sec),
+		  (int) (ru1.ru.ru_stime.tv_usec - ru0->ru.ru_stime.tv_usec) / 10000,
 			 (int) (ru1.tv.tv_sec - ru0->tv.tv_sec),
 			 (int) (ru1.tv.tv_usec - ru0->tv.tv_usec) / 10000);
 
-- 
2.10.1