Re: Linux/Pro [was Re: Coding style - a non-issue]

Davide Libenzi
2001-12-01T23:21:08Z

On Sat, 1 Dec 2001, Alan Cox wrote:

> > > Wasn't it you that were saying that Linux will never scale with more than
> > > 2 CPUs ?
> >
> > No, that wasn't me. I said it shouldn't scale beyond 4 cpus. I'd be pretty
> > lame if I said it couldn't scale with more than 2. Should != could.
>
> Question: What happens when people stick 8 threads of execution on a die with
> a single L2 cache ?

Or for example the new HP PARISC design ( Mako ) with two on-die cores,
3-4 Mb L1 I-Cache per core, 3-4 Mb L1 D-Cache per core and up to 32 Mb
external L2 ( with on-die tagging ).
Anyway it's still better 8 on-die threads of execution sharing an L2
instead of 8 CPU with 1 thread of execution shring through the external
bus.

- Davide