[openstack-dev] [neutron][rootwrap] Performance considerations, sudo?
Yuriy Taraday
yorik.sar at gmail.com
Thu Mar 20 12:41:54 UTC 2014
On Tue, Mar 18, 2014 at 7:38 PM, Yuriy Taraday <yorik.sar at gmail.com> wrote:
> I'm aiming at ~100 new lines of code for daemon. Of course I'll use some
> batteries included with Python stdlib but they should be safe already.
> It should be rather easy to audit them.
>
Here's my take on this: https://review.openstack.org/81798
Benchmark included showed on my machine these numbers (average over 100
iterations):
Running 'ip a':
ip a : 4.565ms
sudo ip a : 13.744ms
sudo rootwrap conf ip a : 102.571ms
daemon.run('ip a') : 8.973ms
Running 'ip netns exec bench_ns ip a':
sudo ip netns exec bench_ns ip a : 162.098ms
sudo rootwrap conf ip netns exec bench_ns ip a : 268.115ms
daemon.run('ip netns exec bench_ns ip a') : 129.876ms
So it looks like running daemon is actually faster than running "sudo".
--
Kind regards, Yuriy.
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