AWS Network Performance
Basics of aws network performance:-
Bandwidth:- Maximum rate of data transfer over the network. In bandwidth it is often referred using 25Gbps it is gigabits not gigabytes. Remember 1 byte = 8bits.
Latency:- Delay between two points in the network. Like peer-to-peer connection. It is also include the propagation delays for signals to travel across medium, as we know we can not make signals travel in the speed of light. Also more delay caused by network devices in the path of one point to another, for packet processing.
Jitter:- Jitter is the variation in inter packet delays. Jitter is not good for seamless network experience like let’s say you’re watching a video on youtube and it is buffering a lot, this may cause you to bad user experience.
Throughput:- Rate of successful data transfer, measured in bits/second.
**Note:- Let’s say one has bandwidth of 1 gbps so it directly does not mean that you will get 1gbps throughput. Because of Latency and packet loss, which directly affects throughput.
PPS(Packets per second):- Number of packet processed in one second by the machine/cpu.
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**Note:- For example let’s assume one has 25gbps bandwidth, but the cpu is not capable of handling that much of data, so in this case the capability is directly affecting the network performance.
MTU(Maximum transmission unit):- Largest packet that can be sent over the network.
Most of the networks supports 1500byte in one packet, and in aws one MTU supports till 9001bytes. which is significant size increase to 6 times of what normal. Any packet larger than 1500 bytes is considered as Jumbo Frame.
Benefits of using Jumbo frame:-
Less packets.
More throughput(again your cpu performance affets your network performance)
Increasing the MTU, when you can not increase the PPS. (Because since you can not increasing the number of packets per second, but you are wanting to improve network performance so there is one way which is increasing the MTU)
