Suppress bogus statistics when pgbench failed to complete any transactions.

Code added in 9.4 would attempt to divide by zero in such cases.
Noted while testing fix for missing-pclose problem.

diff --git a/contrib/pgbench/pgbench.c b/contrib/pgbench/pgbench.c
index 397403f221c95baa69c198aa831af36a0d0e443f..d69036a2f5c36ed034341d0386f012377d45c759 100644 (file)
--- a/contrib/pgbench/pgbench.c
+++ b/contrib/pgbench/pgbench.c
@@ -2541,6 +2541,10 @@ printResults(int ttype, int64 normal_xacts, int nclients,
               normal_xacts);
    }
 
+   /* Remaining stats are nonsensical if we failed to execute any xacts */
+   if (normal_xacts <= 0)
+       return;
+
    if (throttle_delay && latency_limit)
        printf("number of transactions skipped: " INT64_FORMAT " (%.3f %%)\n",
               throttle_latency_skipped,