Re: Intel Hyper Threading on Linux..
On Mon, 2003-07-28 at 00:44, Bob Proulx wrote:
> Louie Miranda wrote:
> > Does Debian/Kernel? Support HT?
>
> Works fine for me. One of the systems here is a dual processor with
> hyperthreading enabled. It was an accident that HT was enabled but we
> decided to leave it that way and run some benchmarks on it. It is a
> dual cpu and so it shows up as four processors with the HT enabled.
> It has so far been quite stable with no trouble at all. Currently
> running the kernel-image-2.4.20-2-686-smp from woody-proposed-updates.
>
> As to whether it has benefits the jury is still out. Since it is
> already a dual processor machine I don't think it adds anything
> significant to turn HT on and in some cases I believe can actually
> slow things down. But no conclusive data yet one way or the other.
>From what I've read, you can sometimes see speedups from HT if
your app is threaded, but if you run mostly non-threaded apps,
you'll see a slowdown because of pseudo-MP overhead on 1 CPU.
> > Just curious.. And how come redhat and suse are always on ads, well
> > commercialzed linux.
>
> They are commercial ventures out to make money. Their marketing model
> is to try to convince people that the water which comes out of the tap
> is not safe to drink and that you should buy bottled water from them.
Bad analogy:
The tap water where I come from is safe, but but has a definite chemical
smell/taste. Thus, we buy bottled water...
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