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Date:      Fri, 8 Jan 1999 02:51:20 +0000 (GMT)
From:      Terry Lambert <tlambert@primenet.com>
To:        dillon@apollo.backplane.com (Matthew Dillon)
Cc:        tlambert@primenet.com, dyson@iquest.net, pfgiffun@bachue.usc.unal.edu.co, freebsd-hackers@FreeBSD.ORG
Subject:   Re: questions/problems with vm_fault() in Stable
Message-ID:  <199901080251.TAA03819@usr01.primenet.com>
In-Reply-To: <199901080106.RAA36238@apollo.backplane.com> from "Matthew Dillon" at Jan 7, 99 05:06:15 pm

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> :The recovery mechanism you outline deals with breaking pages back
> :to the system for reuse, but *aggrivates* the fragmentation issue
> :to an almost unholy level, which just gets worse if you try and add
> :cylinder groups to "grow" the MFS.
> 
>     No it doesn't.  Explain to me how it aggravates the fragmentation 
>     issue.  Remember, we *don't* *care* how 'fragmented' the file data
>     is in MFS's device namespace.  We just care how fragmented it is on
>     physical media - the swap backing store.  The swapper automatically
>     defragments anything over a page in size.

Kernel VM space fragmentation.

Try to load a quiccam driver KLD that need to malloccontig.


					Terry Lambert
					terry@lambert.org
---
Any opinions in this posting are my own and not those of my present
or previous employers.

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