pg_test_timing: fix unit in backward-clock warning

pg_test_timing reports timing differences in nanoseconds in master, and
in microseconds in v14 through v18, but previously the backward-clock
warning incorrectly labeled the value as milliseconds.

This commit fixes the warning message to use "ns" in master and
"us" in v14 through v18, matching the actual unit being reported.

Backpatch to all supported versions.

Author: Chao Li <lic@highgo.com>
Reviewed-by: Lukas Fittl <lukas@fittl.com>
Reviewed-by: Xiaopeng Wang <wxp_728@163.com>
Reviewed-by: Fujii Masao <masao.fujii@gmail.com>
Discussion: https://postgr.es/m/F780CEEB-A237-4302-9F55-60E9D8B6533D@gmail.com
Backpatch-through: 14

diff --git a/src/bin/pg_test_timing/pg_test_timing.c b/src/bin/pg_test_timing/pg_test_timing.c
index ce7aad4b25a4bb1b679927e2786ef1d60caec909..8b358006388eac0f5ac5e90e5c3cec39aa997d31 100644 (file)
--- a/src/bin/pg_test_timing/pg_test_timing.c
+++ b/src/bin/pg_test_timing/pg_test_timing.c
@@ -149,7 +149,7 @@ test_timing(unsigned int duration)
                if (diff < 0)
                {
                        fprintf(stderr, _("Detected clock going backwards in time.\n"));
-                       fprintf(stderr, _("Time warp: %d ms\n"), diff);
+                       fprintf(stderr, _("Time warp: %d us\n"), diff);
                        exit(1);
                }