diff --git a/doc/src/sgml/pgtesttiming.sgml b/doc/src/sgml/pgtesttiming.sgml
index 45ee80c23d..a2581d269c 100644
--- a/doc/src/sgml/pgtesttiming.sgml
+++ b/doc/src/sgml/pgtesttiming.sgml
@@ -183,8 +183,13 @@ Histogram of timing durations:
information about the timer selected during boot:
-dmesg | grep "Timecounter"
-sysctl kern.timecounter.hardware=TSC
+# dmesg | grep "Timecounter"
+Timecounter "ACPI-fast" frequency 3579545 Hz quality 900
+Timecounter "i8254" frequency 1193182 Hz quality 0
+Timecounters tick every 10.000 msec
+Timecounter "TSC" frequency 2531787134 Hz quality 800
+# sysctl kern.timecounter.hardware=TSC
+kern.timecounter.hardware: ACPI-fast -> TSC
@@ -277,7 +282,7 @@ Histogram of timing durations:
- Timers used on older PC hardware including the 8254 Programmable Interval
+ Timers used on older PC hardware include the 8254 Programmable Interval
Timer (PIT), the real-time clock (RTC), the Advanced Programmable Interrupt
Controller (APIC) timer, and the Cyclone timer. These timers aim for
millisecond resolution.