Re: kern/59339 (heartbeat watchdog fires since 10.99.14)

[Taylor R Campbell <riastradh%NetBSD.org@localhost>]

> Date: Sat, 21 Jun 2025 07:41:57 +0000 (UTC)
> From: prlw1%NetBSD.org@localhost
> 
> positive feedback provided. OK to commit patch?

Those of you who have been running with the latest patch (v6): have
you seen any of the prints in dmesg?

They would look something like this (with different numbers):

PR kern/59339 (heartbeat watchdog fires since 10.99.14) would fire: [clock 3] [now=123.123450000 -> 123.123460000], last=123.123445000 + interval=0.000010000 -> next=123.123455000

Or (extremely unlikely unless you're fiddling with your clock to set
it forward by centuries):

[clock 0] itimer arithmetic overflowed: now=9223372036854775798.000000000, last=123.456789123 + interval=20.000000000

I think the part of the change that avoids these conditions is worth
keeping anyway but I'm curious to see if it is happening in practice.