how to understand TCP BBR
时间: 2023-12-13 21:15:44 浏览: 38
TCP BBR (Bottleneck Bandwidth and Round-trip propagation time) is a congestion control algorithm for TCP (Transmission Control Protocol), which is used to manage the flow of data over a network. The main goal of TCP BBR is to maximize the network throughput while reducing the delay and packet loss.
TCP BBR works by estimating the available bandwidth and the round-trip time (RTT) of the network. It then adjusts the sending rate of the data to match the available bandwidth and reduce the RTT. This is achieved by using a feedback mechanism that continuously monitors the network conditions and adjusts the sending rate accordingly.
The key advantage of TCP BBR over other congestion control algorithms is its ability to accurately estimate the available bandwidth and the RTT, which allows it to achieve higher network throughput with lower delay and packet loss. This makes it ideal for applications that require high throughput and low latency, such as video streaming, online gaming, and cloud computing.
Overall, TCP BBR is a powerful congestion control algorithm that can significantly improve the performance of TCP-based applications. However, it requires support from both the client and server sides, and may not be compatible with older versions of TCP.