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pg_test_timing: Add NLS

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Also straighten out use of time unit abbreviations a bit.

Reviewed-by: Michael Paquier <michael.paquier@gmail.com>
This commit is contained in:
Peter Eisentraut
2016-10-14 12:00:00 -04:00
parent a39255d766
commit 59fa9d2d9d
3 changed files with 28 additions and 20 deletions
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16
doc/src/sgml/ref/pgtesttiming.sgml
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@ -96,9 +96,9 @@
<screen>
Testing timing overhead for 3 seconds.
Per loop time including overhead: 35.96 nsec
Per loop time including overhead: 35.96 ns
Histogram of timing durations:
< usec % of total count
< us % of total count
1 96.40465 80435604
2 3.59518 2999652
4 0.00015 126
@ -109,9 +109,9 @@ Histogram of timing durations:
<para>
Note that different units are used for the per loop time than the
histogram. The loop can have resolution within a few nanoseconds (nsec),
histogram. The loop can have resolution within a few nanoseconds (ns),
while the individual timing calls can only resolve down to one microsecond
(usec).
(us).
</para>
</refsect2>
@ -157,9 +157,9 @@ EXPLAIN ANALYZE SELECT COUNT(*) FROM t;
tsc hpet acpi_pm
# echo acpi_pm > /sys/devices/system/clocksource/clocksource0/current_clocksource
# pg_test_timing
Per loop time including overhead: 722.92 nsec
Per loop time including overhead: 722.92 ns
Histogram of timing durations:
< usec % of total count
< us % of total count
1 27.84870 1155682
2 72.05956 2990371
4 0.07810 3241
@ -170,7 +170,7 @@ Histogram of timing durations:
<para>
In this configuration, the sample <command>EXPLAIN ANALYZE</command> above
takes 115.9 ms. That's 1061 nsec of timing overhead, again a small multiple
takes 115.9 ms. That's 1061 ns of timing overhead, again a small multiple
of what's measured directly by this utility. That much timing overhead
means the actual query itself is only taking a tiny fraction of the
accounted for time, most of it is being consumed in overhead instead. In
@ -211,7 +211,7 @@ $ pg_test_timing
Testing timing overhead for 3 seconds.
Per timing duration including loop overhead: 97.75 ns
Histogram of timing durations:
< usec % of total count
< us % of total count
1 90.23734 27694571
2 9.75277 2993204
4 0.00981 3010