On Po 08-05-06 12:27:26, Matt Mackall wrote:
> On Mon, May 08, 2006 at 05:21:12PM +0000, Pavel Machek wrote:
> > Hi!
> >
> > > > What do other platforms without a TSC do?
> > >
> > > Using get_cycles() for /dev/random is new as of 2.6. Before that, we
> > > were directly calling rdtsc on x86 alone. 10msec resolution is fine
> > > for plenty of sources.
> >
> > For what devices are timestamps still 'random/unobservable' in 10msec
> > range?
> >
> > Maybe keyboard... but no, keyboard has autorepeat and can be observed
> > remotely with 10msec accuracy in many cases. (telnet to bbs?)
>
> Please go look at the code.
Ok, so perhaps it got autorepeat right. Still you claimed "plenty" of
usable sources, and keyboard is remotely observable. Please show me
"plenty".
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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