On Mon, Jan 23, 2017 at 10:52:21AM -0800, Simon J. Gerraty wrote:
> Jilles Tjoelker <jil...@stack.nl> wrote:
> > Index: etc/rc.d/random
> > ===================================================================
> > --- etc/rc.d/random (revision 311446)
> > +++ etc/rc.d/random (working copy)
> > @@ -20,12 +20,14 @@
> >
> > save_dev_random()
> > {
> > + oumask=`umask`
> why not simply use a sub-shell to tighten umask
> (umask 077; what-ever)
With our /bin/sh, the save-restore method saves a fork. A command
substitution with a single umask command does not fork, while a subshell
containing umask and something else does.
The effect is fairly minor, but good performance is often the product of
many small optimizations.
--
Jilles Tjoelker
_______________________________________________
freebsd-current@freebsd.org mailing list
https://lists.freebsd.org/mailman/listinfo/freebsd-current
To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"
