Jamie Lokier wrote:
>
> H. Peter Anvin wrote:
> > Ah, neither have I though (recent enough that I'd use it.) I have been
> > trying to get one from Compaq/DEC for years, but I don't ever seem to
> > get to the right person. (Is anyone at Compaq that could actually do
> > something reading this?)
> >
> > I'd really like to get fine-granularity timing on Alpha, just like we
> > have on Intel. I understand the Alpha only has a 32-bit TSC, which
> > means it has to be periodically sampled to keep track of the high bits.
>
> I read on this list that SMP Alphas don't necessarily have synchronised
> TSCs, which could be a bit a of a problem.
>
This is exactly the stuff I'd like to work on, if I had an SMP Alpha ;)
It really isn't that hard to deal with for the kernel, incidentally; you
just have to make sure you keep track of the different TSCs
independently and use the appropriate one.
-hpa
-- <hpa@transmeta.com> at work, <hpa@zytor.com> in private! "Unix gives you enough rope to shoot yourself in the foot."- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.rutgers.edu Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Mon Jan 31 2000 - 21:00:22 EST