[sudo-workers] Is there a way to avoid get_net_ifs() when the information won't be used?

[Rick Jones]

On 01/23/2014 01:54 PM, Todd C. Miller wrote:
> On Thu, 23 Jan 2014 13:15:36 -0800, Rick Jones wrote:
>
>> I would be happy to be a pre-release guinea pig for that.
>
> I just committed the change:
>      http://www.sudo.ws/repos/sudo/rev/e9dc28c7db60

I grabbed top-of-trunk and built it. And with a /etc/sudo.conf containing:

Set probe_interfaces false

There is a very nice, very large drop in the "time sudo sleep 1" test:

top-of-trunk *without* Set probe_interfaces false:
rjones2 at qu-stbaz1-perf0002:~$ time ./sudo sleep 1

real	0m1.333s
user	0m0.036s
sys	0m0.292s
rjones2 at qu-stbaz1-perf0002:~$ time ./sudo sleep 1

real	0m1.324s
user	0m0.036s
sys	0m0.284s
rjones2 at qu-stbaz1-perf0002:~$ time ./sudo sleep 1

real	0m1.320s
user	0m0.032s
sys	0m0.288s
rjones2 at qu-stbaz1-perf0002:~$ time ./sudo sleep 1

real	0m1.320s
user	0m0.032s
sys	0m0.284s


top-of-trunk *with* Set probe_interfaces false:

rjones2 at qu-stbaz1-perf0002:~$ time ./sudo sleep 1

real	0m1.005s
user	0m0.004s
sys	0m0.000s
rjones2 at qu-stbaz1-perf0002:~$ time ./sudo sleep 1

real	0m1.005s
user	0m0.000s
sys	0m0.000s
rjones2 at qu-stbaz1-perf0002:~$ time ./sudo sleep 1

real	0m1.005s
user	0m0.000s
sys	0m0.000s

And being curious, I tried running an older version of sudo with that 
file in place, and it looks like it was quite willing to ignore it, 
which is an excellent thing.

Thanks Muchly!

rick jones