misc/57300: Time system is not accurate on NetBSD VM

[nan%chinadtrace.org@localhost]

>Number:         57300
>Category:       misc
>Synopsis:       Time system is not accurate on NetBSD VM
>Confidential:   no
>Severity:       serious
>Priority:       low
>Responsible:    misc-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Mar 26 10:20:00 +0000 2023
>Originator:     Nan Xiao
>Release:        9.3
>Organization:
>Environment:
NetBSD localhost 9.3 NetBSD 9.3 (GENERIC) #0: Thu Aug  4 15:30:37 UTC 2022  mkrepro%mkrepro.NetBSD.org@localhost:/usr/src/sys/arch/amd64/compile/GENERIC amd64
>Description:
Hi NetBSD community,

My NetBSD is a VirtualBox virtual machine, and host machine is macOS Ventura 13.2.1. I find the date command doesn't display time correctly, and it is very advanced than actual time.

E.g.:

-bash-5.1$ date; sleep 10; date
Sun Mar 26 18:59:44 +08 2023
Sun Mar 26 19:00:13 +08 2023

Actually the time just passes 10 seconds, but date command shows it has passes nearly half a minute. Not sure whether this could be accounted as NetBSD bug, or VirtualBox bug, thanks!

Best Regards
Nan Xiao
>How-To-Repeat:

>Fix: