Re: Dropping mb_map

[Joerg Sonnenberger <joerg%britannica.bec.de@localhost>]

On Sat, Feb 06, 2010 at 09:55:03PM +0900, Masao Uebayashi wrote:
> A word from a UVM learner...
> 
> > This case shouldn't be hit too often as the clusters are already
> > allocated from a pool, so the locking difference shouldn't make a big
> > difference. Comments?
> 
> My understanding is that the main point of having kernel submaps is to reduce
> lock contention.  So I wonder how this impacts performance on MP systems &
> heavy network load.

mbuf clusters have a pool cache already, so they generally won't go to
the backing map.

Joerg