From 65c65563842cc99fb1c349211581a62dc728eee2 Mon Sep 17 00:00:00 2001
From: Heikki Linnakangas <heikki.linnakangas@iki.fi>
Date: Wed, 21 Sep 2016 13:14:48 +0300
Subject: [PATCH] Fix pgbench's calculation of average latency, when -T is not
used.
If the test duration was given in # of transactions (-t or no option),
rather as a duration (-T), the latency average was always printed as 0.
It has been broken ever since the display of latency average was added,
in 9.4.
Fabien Coelho
Discussion: <alpine.DEB.2.20.1607131015370.7486@sto>
---
src/bin/pgbench/pgbench.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/src/bin/pgbench/pgbench.c b/src/bin/pgbench/pgbench.c
index 4676a59020a..9033ff2caae 100644
--- a/src/bin/pgbench/pgbench.c
+++ b/src/bin/pgbench/pgbench.c
@@ -3296,9 +3296,11 @@ printResults(TState *threads, StatsData *total, instr_time total_time,
if (throttle_delay || progress || latency_limit)
printSimpleStats("latency", &total->latency);
else
- /* only an average latency computed from the duration is available */
+ {
+ /* no measurement, show average latency computed from run time */
printf("latency average: %.3f ms\n",
- 1000.0 * duration * nclients / total->cnt);
+ 1000.0 * time_include * nclients / total->cnt);
+ }
if (throttle_delay)
{
--
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