Re:Packets per Second Limitations in EC2
by Rapzid on Friday October 26, 2018 @11:19PM
(#18314180)
I guess technically it is, but I hesitate to call the need for PPS limitations in the DC as "over subscribing".
Connect a single server to a network and it's oversubscribed. That's a bit hyperbolic, but even some beefy networks can be seriously burdened by just a single server spamming UDP packets without some sort of QoS.. Especially if they are bypassing user space and using the kernel to just replicate a bunch of packets onto the wire :)
I'm probably a bit biased from having spent time setting up linux TC on xen hypervisors for this very reason; and I think we even settled at 50k pps for the per vm limit too..
Connect a single server to a network and it's oversubscribed. That's a bit hyperbolic, but even some beefy networks can be seriously burdened by just a single server spamming UDP packets without some sort of QoS.. Especially if they are bypassing user space and using the kernel to just replicate a bunch of packets onto the wire :)
I'm probably a bit biased from having spent time setting up linux TC on xen hypervisors for this very reason; and I think we even settled at 50k pps for the per vm limit too..