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I work with an EC2 instance which, particularly, is a t2.xlarge being up to 1 Gbps of network performance. Then I launch an application that generates UDP traffic with a rate of 1Mbps. Then I do not understand why the constant data rate of 1 Mbps reduces to 600kbps when the network performance is up to 1Gbps.
con risposta 2 anni fa
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Is your application in an EC2 instance? Network performance has a baseline + burst bandwidth. You may be exceeding the baseline and eventually running out of burst capacity. This page provides a bit of transparency though it's a few years old now - https://cloudonaut.io/ec2-network-performance-cheat-sheet/
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Bear in mind that t2 instances are a previous-generation instance; perhaps t3 might be better. Also: t2 and t3 work on CPU credits; so if you consume your CPU credits the performance of the instance will be slower; and that may lead to the data rate going down because there isn't enough CPU resources to process your stream. Check CloudWatch Metrics to see what is happening with CPU credits. A m5 instance might be better in this case.