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From: John Baldwin <jhb@freebsd.org>
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Cc: svn-src-head@freebsd.org, svn-src-all@freebsd.org
Subject: Re: svn commit: r237656 - in head: contrib/top usr.bin/top
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On Wednesday, June 27, 2012 2:08:48 pm John Baldwin wrote:
> Author: jhb
> Date: Wed Jun 27 18:08:48 2012
> New Revision: 237656
> URL: http://svn.freebsd.org/changeset/base/237656
> 
> Log:
>   Add a new line to top that provides a brief summary of the ZFS ARC memory
>   usage on hosts using ZFS.  The new line displays the total amount of RAM
>   used by the ARC along with the size of MFU, MRU, anonymous (in flight),
>   headers, and other (miscellaneous) sub-categories.  The line is not
>   displayed on systems that are not using ZFS.
>   
>   Reviewed by:	avg, fs@
>   MFC after:	3 days

FYI, sample output:

CPU:  0.0% user,  0.0% nice,  0.0% system,  0.0% interrupt,  100% idle
Mem: 1252M Active, 1422M Inact, 23G Wired, 331M Buf, 21G Free
ARC: 21G Total, 1354M MRU, 19G MFU, 272K Anon, 243M Header, 447M Other
Swap: 8192M Total, 8192M Free

-- 
John Baldwin