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From: Denis Vlasenko <vda@port.imtp.ilyichevsk.odessa.ua>
Reply-To: vda@port.imtp.ilyichevsk.odessa.ua
To: "J.A. Magallon" <jamagallon@able.es>,
       Scott Robert Ladd <scott@coyotegulch.com>
Subject: Re: HT Benchmarks (was: /proc/cpuinfo and hyperthreading)
Date: Tue, 17 Dec 2002 09:03:38 -0200
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On 16 December 2002 21:27, J.A. Magallon wrote:
> On 2002.12.17 Scott Robert Ladd wrote:
> [...]
>
> From what I can see, HT provides a 0-15% increase in performance,
> depending
>
> >heavily on the type of code being run. In other words, HT helps, but
> > it is *no* substitute for true multiple processors. And it is ONLY
> > of value when an SMP kernel is in use.
>
> What I don't like is that Intel sells it like the best thing since
> sliced bread, and get a money for it, see the price of Xeons compared
> to normal P4s...

What did you expect? They are making processors for money, and have
to push the sales.

As to HT, it's definitely a good thing. Multiple CPUs on a chip is
a logical step. HT in P4 is rather weak, but future processors will
likely have more advanced cores.

I never heard about HT from AMD camp. I'm curious what they do. ;)
--
vda
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