Re: Dropped frames in video capture process
H. Peter Anvin (hpa@transmeta.com)
13 Nov 1998 02:13:46 GMT
Followup to: <19981113115139.A32481@caffeine.ix.net.nz>
By author: Chris Wedgwood <chris@cybernet.co.nz>
In newsgroup: linux.dev.kernel
>
> On Thu, Nov 12, 1998 at 11:25:47PM +0000, Alan Cox wrote:
>
> > Intel SMP runs lockstep off the same clock, and we actually rely on
> > that in kernel right now
>
> so both clocks are always in sync? Normally I would assume they are,
> but we can trivially make them far apart (set the lower 32-bits of
> the current tsc to ~0 or somesuch).
>
> still, if we play those games and things break, we only have
> ourselves to blame...
>
Right. Note that only the kernel can write to the TSC anyway; and has
no reason to do so.
-hpa
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