Cache Memory in top command

Bruce Cran bruce at
Wed Sep 29 11:43:05 UTC 2010

On Wed, 29 Sep 2010 08:57:09 +0200
Bas Smeelen <b.smeelen at> wrote:

>  *Cache:* number of clean pages caching data that are available for
> immediate reallocation
> <>

I believe the "Cache" value is almost totally unrelated to the
amount of memory used for caching: FreeBSD has a unified buffer cache
so any memory is available for use as cache. Unlike Linux, you can't
look at the line in 'top' to see how much memory is being used for
buffers and cache.

You can find more information about the VM architecture at .

Bruce Cran

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