Wow Yuriy, amazing and fast :-), benchmarks included ;-)
The daemon solution only adds 4.5ms, good work. I'll add some comments in a while.
Recently I talked with another engineer in Red Hat (working in ovirt/vdsm), and they have something like this daemon, and they are using BaseManager too. In our last conversation he told me that the BaseManager has a couple of bugs & race conditions that won't be fixed for python2.x, I'm waiting for details on those bugs, I'll post them to the thread as soon as I have the details. If this coupled to neutron in a way that it can be accepted for Icehouse (we're killing a performance bug), or that at least it can be y backported, you'd be covering both the short & long term needs. Best, Miguel Ángel. On 03/20/2014 01:41 PM, Yuriy Taraday wrote:
On Tue, Mar 18, 2014 at 7:38 PM, Yuriy Taraday <yorik....@gmail.com <mailto:yorik....@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. _______________________________________________ OpenStack-dev mailing list OpenStack-dev@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev
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