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Date:      Sat, 02 Oct 2010 13:56:46 +0200
From:      "Bas Smeelen" <b.smeelen@ose.nl>
To:        freebsd-questions@freebsd.org
Subject:   Re: Cache Memory in top command
Message-ID:  <20101002115646.12b2e032@mail.ose.nl>
In-Reply-To: <4CA48649.8090605@ose.nl>

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_____  

From: Bas Smeelen [mailto:b.smeelen@ose.nl]
To: freebsd-questions@freebsd.org
Sent: Thu, 30 Sep 2010 14:44:57 +0200
Subject: Re: Cache Memory in top command

On 09/30/2010 01:37 PM, RW wrote:
  > On Thu, 30 Sep 2010 09:24:58 +0200
  > Bas Smeelen <b.smeelen@ose.nl> wrote:
  >
  >
  >   
  >> *Wired:* number of pages wired down, including cached file data pages
  >>     
  > That refers to buffer pages (displayed as Buf), which are a subset of
  > the cached file data pages.
  >
  > The pages in the cache queue are not specifically cached file data
  > pages, they are clean pages from any source, including pages that have
  > been written to swap.

  Thanks. I got this completely wrong, though I have read the FAQ a few years ago.
http://www.freebsd.org/doc/en_US.ISO8859-1/books/faq/misc.html#TOP-FREEMEM
The values shown by top(1) labeled as Inact, Cache, and Buf are all cached data at different aging levels.  


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