From owner-freebsd-emulation  Fri Jul 13 21:33:58 2001
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Date: Fri, 13 Jul 2001 21:33:47 -0700
From: Nick Sayer <nsayer@quack.kfu.com>
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To: Greg Troxel <gdt@fnord.ir.bbn.com>
Cc: freebsd-emulation <freebsd-emulation@freebsd.org>
Subject: Re: FreeBSD VMware guest never idles
References: <200103091510.f29FADi30516@morpheus.kfu.com> <20010309155114.C63383@midgard.dhs.org> <3AA950D2.5060108@quack.kfu.com> <rmiae291xth.fsf@fnord.ir.bbn.com>
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Greg Troxel wrote:


> 
> Can anyone explain the consequences of disconnecting RTC?  Is having
> this 'connected' what makes the "hardware clock" in the VM synced to
> the host os operating system time?  Should I just run NTP on the guest
> instead?
> 
>         Greg Troxel <gdt@ir.bbn.com>
> 


It depends on the guest OS. FreeBSD uses the 'rtc' as the source for the 
profile timer, but if you're not profiling stuff, it shouldn't matter.

Windows tends to use the RTC as a means of synchronizing multimedia 
stuff. Without it, the media player, shockwave/flash and other stuff 
like that... sucks more... sort of.

So far as I know, Linux doesn't use it at all, except to provide for a 
/dev/rtc, which we just emulate with our emulating driver.


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