What do Network In and Network Out mean in Amazon?
If you got an instance with 10 Gigabit Ethernet. What does it mean? How much bytes do you have in Network In and how much in Network Out as maximum?
In the reports of Cloud Watch I can see 80,000,000 in Network In, and 800,000,000 in Network Out. When it is coming close to 120,000,000 in Network In the site starts to load slow and some pictures or assets don't load. Is it the maximum?
Answer
- 10 Gigabit Ethernet, assume it is full duplex, so maximum Network In=max Network Out = 10 Gbps / 8 = 1.25 GB/second.
Gbps: Gigabit per second; GB: Giga Byte; MB: Mega Byte
- Cloud Watch, 80,000,000 in Network In means 80MB per 60 seconds. 120,000,000 in Network In => 120MB / 60s => 2 MB/s => 16 Mbps, it far from the maxium 100 Mbps. But it still depend on what instance type you use.
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/viewing_metrics_with_cloudwatch.html https://www.datadoghq.com/blog/why-do-aws-cloudwatch-and-datadog-seem-to-disagree/