On Apr 3, 11:30pm, thorpej@shagadelic.org (Jason Thorpe) wrote:
-- Subject: Re: kern/33185: kva shortage problems

| The following reply was made to PR kern/33185; it has been noted by GNATS.
| 
| From: Jason Thorpe <thorpej@shagadelic.org>
| To: gnats-bugs@netbsd.org
| Cc: kern-bug-people@netbsd.org, gnats-admin@netbsd.org,
| 	netbsd-bugs@netbsd.org
| Subject: Re: kern/33185: kva shortage problems
| Date: Mon, 3 Apr 2006 16:26:53 -0700
| 
|  On Apr 3, 2006, at 3:45 PM, yamt@mwd.biglobe.ne.jp wrote:
|  
|  > 	1. lack of kva reclamation mechanism.
|  > 	   http://mail-index.NetBSD.org/tech-kern/2005/12/17/0028.html
|  > 	2. things like bufmem_hiwater and desiredvnodes doesn't consider
|  > 	   the amount of kva.
|  
|  General lack of available KVA!
|  
|  Have we thought about doing 4+4 on i386?

Linux tried it and it gets tricky... Specially dealing with DMA. Plus
there is a ~10% performance penalty.

christos