What Happens When /proc is not Mounted in FreeBSD5.4?

Fabian Keil freebsd-listen at fabiankeil.de
Thu Feb 1 18:44:17 UTC 2007

Martin McCormick <martin at dc.cis.okstate.edu> wrote:

> 	I made a startling discovery when using strace to
> trouble-shoot a different problem on a freeBSD5.4 system that has
> been running since last October.  Both it and another new 5.4
> system had a /proc mount point but no process files.

If I remember correctly procfs is off by default
for security reasons.

> 	Would an unmounted /proc make the system run slower since
> proc files allow for examination of the operation of the running
> processes?

procfs is for user land applications, the kernel obviously
has other means to examine running processes.

I doubt that mounting procfs (without using it) has any measurable
effect on the system's performance, but if it does, I would assume
that it decreases performance rather than increasing it.

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