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Date:      Thu, 21 May 2015 14:19:54 -0400
From:      grarpamp <>
Subject:   Re: End user RAM usage survey
Message-ID:  <>
In-Reply-To: <>
References:  <> <>

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Posting the "real memory" and the header lines from top would be
useful for other users to see, along with the verbal descriptions.
I suggested "using" because many users have far more physical memory
installed than they will ever need. Thus quoting only the amount
of installed memory doesn't provide much realworld usage insight
for users.

Here's a snapshot of a browsing and general user platform that
includes both memory installed and in use. X, Mozilla and ZFS are
the big consumers. Were ZFS switched to UFS, headroom does not
really exist to permit distribute the RAM (1GB sticks) to other
machines. And if they wanted to run VM it may estimate them to add
up to 2GB/VM more.

# grep "real mem" /var/run/dmesg.boot
real memory  = 2147483648 (2048 MB)

# top
54 processes:  2 running, 51 sleeping, 1 waiting
Mem: 479M Active, 90M Inact, 641M Wired, 344K Cache, 112M Buf, 779M Free
ARC: 328M Total, 138M MFU, 174M MRU, 16K Anon, 3012K Header, 13M Other

(Swap is disabled so that field shows blank.)

(FreeBSD itself does not *require* swap. Swap is only required if
your usage would exceed physical RAM and you wish to avoid process
killing / crash.)

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