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From: Nate Williams <nate@mt.sri.com>
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To: Warner Losh <imp@village.org>
Cc: Poul-Henning Kamp <phk@critter.freebsd.dk>,
	freebsd-current@FreeBSD.ORG
Subject: Re: Serious server-side NFS problem 
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	<199912162024.NAA73705@harmony.village.org>
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> : If people do a "settimeofday" we change the boot time since the
> : amount of time we've been up *IS* known for sure, whereas the boottime
> : is only an estimate.
> 
> There is one problem with this.  The amount of uptime isn't the same
> as the amount of time since the machine booted.  How can this happen?
> When a laptop suspends, it doesn't update the update while it is
> asleep, nor does it update the uptime by the amount of time that has
> been slept.

FWIW, we had code in the tree (just before the timeout_ch changes) that
did update all of the timeouts to 'fire' when the laptop was resumed.

This caused a 'thundering herd' problem at resume, but I don't see any
way around it...  However, it was lost when we changed to the different
timeout code.




Nate


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