EC2 m5n.2xlarge limited bandwidth?

Question

When a user is uploading a file to my **m5n.2xlarge**, the server become quite slow (network). The user is uploading at 100Mbps, I am not sure why the server is not able to handle this bandwidth. From the specs:

* Network: Up to 25 Gbps
* EBS: Up to 4,750 Mbsp

I am limited because of EBS, or credit balance (I don't understand this notion of credit balance)? Should I use another instance?
Thank you in advance!

Answer

Did you validate the ENA drive is enabled on the instance? https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/enhanced-networking-ena.html

You can also leverage CloudWatch metrics to see the NetworkIn to the instance to see how much throughput is being used. https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/monitoring-network-performance-ena.html

Answer

Network performance from a client to a server depends on a lot of things including the network in between. Could it be an issue on the server? Sure. But I would first look at the path between the client and server. Run tests on different clients connected to different networks and isolate where the performance issue is coming from.

EC2 m5n.2xlarge limited bandwidth?

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