Re:Nomad Million Container Challenge
by darawk on Thursday March 17, 2016 @05:49PM
(#11307901)
Nomad seems cool, but this benchmark is almost completely meaningless as far as I can tell. There is no reason to test this with 5000 servers and 1 million containers, it just seems like marketing nonsense. All you really care about is how fast it can provision 1 container and 1 machine. The rest is just parallelism - which, when dealing with multiple discrete servers should scale perfectly without any actual effort.
[ Parent
| on HN ]
Starting containers can be done in parallel, but scheduling cannot be trivially parallelized because it needs to take into account the resources consumed by existing containers. Situations like a rack failure can cause scheduling storms where many workloads need to be rescheduled as quickly as possible.