Re: [uml-user] UML and SMP

2005-11-03 Thread Blaisorblade
On Thursday 03 November 2005 22:26, Alexander Charbonnet wrote: > I suppose my information is way out of date, then. Sorry! Not exactly. Nor I nor Jeff (I guess) would trust their data to a UML in SMP mode. Plus, SMP is only for TT mode. And both skas0 and skas3 mode are a lot faster of TT. (

Re: [uml-user] UML and SMP

2005-11-03 Thread Jeff Dike
On Thu, Nov 03, 2005 at 04:36:35PM -0500, Ian Smith-Heisters wrote: > I still don't know how that option works. If they're virtual cpus, do > they map to real cpus? Is this option what's required for UML instances > to use both CPUs? All I know is the switch is there, I've no idea how it > works

Re: [uml-user] UML and SMP

2005-11-03 Thread Ian Smith-Heisters
I still don't know how that option works. If they're virtual cpus, do they map to real cpus? Is this option what's required for UML instances to use both CPUs? All I know is the switch is there, I've no idea how it works, and I'd be interested to know. -Ian Alexander Charbonnet wrote: I supp

Re: [uml-user] UML and SMP

2005-11-03 Thread Alexander Charbonnet
I was under the impression that virtual CPUs in the UML are there for testing purposes, and that the process for any given UML (no matter how many virtual CPUs it had) ran on only one physical CPU. On Thursday 03 November 2005 03:36 pm, Ian Smith-Heisters wrote: > I still don't know how that op

Re: [uml-user] UML and SMP

2005-11-03 Thread Alexander Charbonnet
I suppose my information is way out of date, then. Sorry! On Thursday 03 November 2005 02:59 pm, Ian Smith-Heisters wrote: > There is > > ncpus=<# of desired CPUs> > This tells an SMP kernel how many virtual processors to start. > > in vmlinux --help > > Alexander Charbonnet wrote: > >>Actua

Re: [uml-user] UML and SMP

2005-11-03 Thread Ian Smith-Heisters
There is ncpus=<# of desired CPUs> This tells an SMP kernel how many virtual processors to start. in vmlinux --help Alexander Charbonnet wrote: Actually, I use UML on one server in my firm. I want to migrate my server on a new machine which have 2 processors. Is UML can use all processors

Re: [uml-user] UML and SMP

2005-11-03 Thread Alexander Charbonnet
> Actually, I use UML on one server in my firm. I want to migrate my server > on a new machine which have 2 processors. Is UML can use all processors ? > My kernel version is 2.6.12.2 with skas mode on host. My understanding is that each UML instance will see only one processor. You can run twic

[uml-user] UML and SMP

2005-11-03 Thread Jean-Michel Caricand
Hi alls, Actually, I use UML on one server in my firm. I want to migrate my server on a new machine which have 2 processors. Is UML can use all processors ? My kernel version is 2.6.12.2 with skas mode on host. Thank. Jean-Michel Caricand Adresse professionnelle GRETA de Besançon 35 avenue de