Re: timekeeping regression?

["Mathew, Cherry G.*" <c%bow.st@localhost>]

>>>>> Brad Spencer <brad%anduin.eldar.org@localhost> writes:

    > "Greg A. Woods" <woods%planix.ca@localhost> writes:
    >> 
    >> At Wed, 20 Mar 2024 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!
    >> 
    >> -- Greg A. Woods <gwoods%acm.org@localhost>
    >> 
    >> Kelowna, BC +1 250 762-7675 RoboHack <woods%robohack.ca@localhost> Planix,
    >> Inc. <woods%planix.com@localhost> Avoncote Farms <woods%avoncote.ca@localhost>
    >> 


    > I have lost track... is your FreeBSD domain a pure PVH or a normal
    > PV or PVSHIM??  All of my multi-vcpu pure PVH guests can keep time
    > pretty well, but nearly all multi-vcpu PV guest (pure PV or
    > PVSHIM) will tend to lose their minds after a while, although not
    > in the same way you have been describing.  

Can you confirm that you see this only on PV/PVSHIM ?

Also, do you see this on any other OS (I believe linux still has the
ability to run pure PV ?).

-- 
Math/(~cherry)