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commit    b93d37474fdf31d2cd71c13f014b481863abb7c2
Author:   Heikki Linnakangas <heikki.linnakangas@iki.fi>
Date:     Wed Sep 21 10:14:48 2016 +0000
First released in: 10.0, 9.4.10, 9.5.5, 9.6.0

    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 | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/bin/pgbench/pgbench.c b/src/bin/pgbench/pgbench.c
index 75dc57d360c..60a5af8a9ba 100644
--- a/src/bin/pgbench/pgbench.c
+++ b/src/bin/pgbench/pgbench.c
@@ -2736,9 +2736,9 @@ printResults(int ttype, int64 normal_xacts, int nclients,
 	}
 	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 / normal_xacts);
+			   1000.0 * time_include * nclients / normal_xacts);
 	}
 
 	if (throttle_delay)


[parent: 923ad1a16ae2]