Re: X15 alpha release: as fast as TUX but in user space

From: Ville Herva (
Date: Sat Apr 28 2001 - 08:30:30 EST

On Sat, Apr 28, 2001 at 03:24:25PM +0200, you [Ingo Molnar] claimed:
> On Sat, 28 Apr 2001, Ville Herva wrote:
> > Uhh, perhaps I'm stupid, but why not cache the date field and update
> > the field once a five seconds? Or even once a second?
> perhaps the best way would be to do this updating in the sending code
> itself.
> first there would be a 'current time thread', which updates a global
> shared variable that shows the current time. (ie. no extra system-call is
> needed to access current time.) If the header-sending code detects that
> current time is not equal to the timestamp stored in the header itself,
> then the header is reconstructed. Pretty simple.

Yes, that's vaguely resembles what I had in mind. Of course I had no idea
about the data structures Tux or X15 use internally, so I couldn't think it
too thoroughly.

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