Subject: Re: mapping shared memory at a fixed address
To: Eduardo Horvath <eeh@NetBSD.org>
From: Rahul Kulkarni <crypto_rahul@yahoo.com>
List: tech-kern
Date: 02/08/2005 15:27:05
I meant unecassarily large address space issues due to
duplication.. 
--- Eduardo Horvath <eeh@NetBSD.org> wrote:

> On Tue, Feb 08, 2005 at 02:28:47PM -0800, Rahul
> Kulkarni wrote:
> > On a potentially large system with a huge code
> base,
> > this cannot work, due to a lot of duplication in
> the
> > text and if if you fork a lot of children then the
> > text  sizes will be a concern.. 
> 
> Huh?  We're talking about a demand-paged VM.  Unless
> you're
> writing to the text segment, it's shared.  Forking
> should be
> more efficient than execing since you also get to
> share the shib
> binding goo which would normally be private and COW.
>  
> 
> I suppose you can run into address space issues, but
> that 
> has nothing to do with duplication of text pages.
> 
> Eduardo
> 



	
		
__________________________________ 
Do you Yahoo!? 
Yahoo! Mail - You care about security. So do we. 
http://promotions.yahoo.com/new_mail