To SMP or not to SMP

Erich Dollansky erichsfreebsdlist at alogt.com
Thu Jan 10 00:18:56 UTC 2013


Hi,

On Wed, 9 Jan 2013 06:35:33 -0800 (PST)
Barney Cordoba <barney_cordoba at yahoo.com> wrote:

> 
> This explanation defies the possibility of a GENERIC kernel, which 
> of course is an important element of a GPOS. Its too bad that smp
> support can't be done with logic rather than a kernel option. 
> 
it seems to me that you have a very simply view on what SMP means for
software.

> The big thing I see is the use of legacy interrupts vs msix. Its not
> like flipping off SMP support only changes the scheduler behavior.

SMP goes into the applications. A single-CPU kernel must still run
these kind of applications.

Erich


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