Re: Timestamp counters on SMP

From: H. Peter Anvin (hpa@transmeta.com)
Date: Tue Mar 28 2000 - 22:45:43 EST


Followup to: <38E17A0A.7B904E0C@home.com>
By author: Boris Okun <bokun@home.com>
In newsgroup: linux.dev.kernel

> Umm, Thank You!
> That was indeed the second question:-)
>
> The first one was what are they?
>
> My only gripe is with software which assumes that all TSC's have the
> same rate and claims to be working all the time. If it works on 80386,
> it can work with different TSC's. If it works on 80386 and does not
> work with different TSC's, then it is broken.
>

TSC's *DO* have the same rate (which varies from machine to machine,
but on the same machine). They are high-precision realtime clocks.

        -hpa

-- 
<hpa@transmeta.com> at work, <hpa@zytor.com> in private!
"Unix gives you enough rope to shoot yourself in the foot."

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