66 lines
2.2 KiB
Markdown
66 lines
2.2 KiB
Markdown
# IPerf 使用说明
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IPerf 可用于网络带宽测试，可在 Windows、Linux、Android、MacOS 和 iOS 系统下运行。主要有 IPerf2 和 IPerf3 两大版本。
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IPerf 可做为 Server 端或 Client 端运行，Client 发起与 Server 端的通讯，并对通讯性能进行分析。
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## 单线程 TCP 测试
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```bash
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# Server
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iperf3 -s -p <port>
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# Client
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iperf3 -c <server ip> -p <server port> -i <interval> -t <time>
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```
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## 多线程 TCP 测试
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```bash
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# Server
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iperf3 -s -p <port>
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# Client
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iperf3 -c <server ip> -p <server port> -i <interval> -t <time> -P <parallel>
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```
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## 单线程 UDP 测试
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```bash
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# Server
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iperf3 -s -p <port>
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# Client
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iperf3 -u -c <host> -p <port> -i <interval> -t <time>
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```
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## 多线程 UDP 测试
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```bash
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# Server
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iperf3 -s -p <port>
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# Client
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iperf3 -u -c <host> -p <port> -i <interval> -t <time> -P <parallel>
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```
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## 以太网缓存
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有时候 UDP 丢包率高，可能是因为缓存设置参数不够优化，Linux 下修改
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```bash
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echo 21299200 > /proc/sys/net/core/rmem_default
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echo 21299200 > /proc/sys/net/core/rmem_max
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```
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两个文件来修改以太网缓存参数。
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## 基本参数说明
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| Options | Description |
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|----------------------------|--------------------------------------------------------------------|
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| -i # | Server or Client: seconds between periodic bandwidth reports |
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| -p # | Server or Client: server port to listen on/connect to |
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| -s | Server specific: run in server mode |
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| -c \<host\> | Client specific: run in client mode, connecting to \<host\> |
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| -P # | Client specific: number of parallel client streams to run |
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| -t # | Client specific: time in seconds to transmit for (default 10 secs) |
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| -u | Client specific: use UDP rather than TCP |
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| -b, --bandwidth #[KMG][/#] | target bandwidth in bits/sec (0 for unlimited, default 1 Mbit/sec for UDP, unlimited for TCP, optional slash and packet count for burst mode) |
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