[HEADS-UP] Rawhide: /tmp is now on tmpfs

Richard W.M. Jones rjones at redhat.com
Fri Jun 1 15:19:01 UTC 2012

On Fri, Jun 01, 2012 at 11:05:26AM -0400, Gregory Maxwell wrote:
> On Fri, Jun 1, 2012 at 9:50 AM, Gerry Reno <greno at verizon.net> wrote:
> > So everyone needs to go out and buy twice as much RAM so F18+ can run /tmp as tmpfs without causing memory shortfalls
> > for everything else they do.
> > That's crazy.
> Thats not true (and I've used tmpfs for tmp for years, so I'm speaking
> from experience)— tmpfs is backed by swap on demand. Just add the
> space that you would have used for /tmp to your swap.

The *default* limit for tmpfs is half of physical RAM (swap is not
counted).  So *if* tmp-on-tmpfs is left at the defaults then
increasing physical RAM might be necessary.  I haven't bothered to
look at how tmp-on-tmpfs is implemented in systemd though.


Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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