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Re: timekeeping regression?
>>>>> Greg A Woods <woods%planix.ca@localhost> writes:
> At 2024年3月20日 03:31:00 +0000, "Mathew, Cherry G.*" <c%bow.st@localhost> wrote:
> Subject: Re: timekeeping regression?
>>
>> I think the problem here is that there's no clarity in the API
>> about ownership. So we'll probably need to have a look at what
>> linux and/or FreeBSD does, to understand what the current
>> consensus is - this seems to be the linux way of documentation -
>> a sort of mob rules situation.
> Hmmm... FreeBSD (14.0) is now the only domU system I have that's
> been keeping time properly, even with the dom0 running on one
> pinned CPU.
> All the NetBSD systems have experienced large time drifts after
> about 7 days of uptime.
> So, yeah, FreeBSD is doing something right/better!
I don't believe FreeBSD has pure PV - so all this seems to point to
SMP + PV and I'm mostly responsible for that.
I'll have a re-look once I get my teeth into the timekeeping code.
--
Math/(~cherry)
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