Date: Thu, 21 May 2015 13:38:41 -0500 (CDT) From: "Valeri Galtsev" <galtsev@kicp.uchicago.edu> To: "grarpamp" <grarpamp@gmail.com> Cc: freebsd-questions@freebsd.org Subject: Re: End user RAM usage survey Message-ID: <30988.128.135.70.2.1432233521.squirrel@cosmo.uchicago.edu> In-Reply-To: <CAD2Ti28Ki0L=T-xX%2B14wjebJrZm%2B9sLFNP0yC6TyeEUFH-TiAg@mail.gmail.com> References: <CAD2Ti2_6Cjc6U_%2BWYyAhB7aQ1WHKpV0aqBjRSiaU_%2BRSJDkQmg@mail.gmail.com> <43064.128.135.70.2.1432223515.squirrel@cosmo.uchicago.edu> <CAD2Ti28Ki0L=T-xX%2B14wjebJrZm%2B9sLFNP0yC6TyeEUFH-TiAg@mail.gmail.com>
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On Thu, May 21, 2015 1:19 pm, grarpamp wrote: > 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: > > (Swap is disabled so that field shows blank.) > > (FreeBSD itself does not *require* swap. Thanks! I guess, I didn't read the book carefully enough... The very next thing I'll do will be: disable swap on all large RAM boxes (even though it is merely default 4GB the installer will set for you). Valeri > Swap is only required if > your usage would exceed physical RAM and you wish to avoid process > killing / crash.) ++++++++++++++++++++++++++++++++++++++++ Valeri Galtsev Sr System Administrator Department of Astronomy and Astrophysics Kavli Institute for Cosmological Physics University of Chicago Phone: 773-702-4247 ++++++++++++++++++++++++++++++++++++++++
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