Re: Timestamp counters on SMP

From: Boris Okun (bokun@home.com)
Date: Tue Mar 28 2000 - 13:18:51 EST


Mark Hahn wrote:
>
> > Why would you want to use TSC in the user space? Coherent time and TSC
>
> for timing, of course, without the overhead of a syscall.

Where do you need this? And how will your user space run on platforms
without TSC?

>
> > are two different things. I think relying on TSC content in the user
> > space is like relying on content of any other register, we don't expect
> > eax to have any particular value ;-)
>
> uh, sure we do. eax DAMNED well better contain whatever I put in it last.

You can put whatever you want into TSC as well, that is not the point.
What do you expect if you didn't put anything?

Boris

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