>That is a total of just over 20MB.
>
>Clearly, the kernel takes up some unaccounted for space. Does the UBC also ?
>or since it is integrated with the VM system, is buffer cache use reflected in
>the vmstat output ?
>
>Just looking for some information on how to better account for memory usage,
>or to figure for the missing 12MB. Or maybe using PS rss + VMSTAT free + kernel
>space is not a valid measurement technique ?
>
>I guess I was slightly surprised to see only 11MB on the free list in the
>above situation.
"Free" memory consists of free and cached pages. See the output of
'vmstat -s' for the "pages in VM cache". In general, this is the number of
pages that contain cached file data.
-DG
David Greenman
Core Team/Principal Architect, The FreeBSD Project