RTX 实时以太网性能分析
RTX 实时以太网性能分析
基于Windows 的实时操作系统 RTX 下使用普通网卡即可实现实时以太网的性能。笔者对 RTX 与 Windows 下以太网性能进行了对比测试。
1. 测试环境
Windows XP 操作系统, RTX 使用Dedicated 模式, 单独占用一颗 CPU核, 硬件使用 Core i7, 4核8线程, 2.8GHz 主频, 4GB 内存, 两块 Intel 82545GM 千兆网卡点对点互联。
2. 测试方法
RTX 环境下, 测试方法为两台机器分别运行RT Client 和 RT Server 两个 RTSS 应用程序, RT Client 发送数据包到 RT Server, RT Server 收到数据包之后发送回 RT Client。
使用 TCP/IP & UDP协议, 选择不同的包长度, 每次发送500 个数据包, 重复 20 次
Windows 环境下, 两台机器分别运行 Client 和 Server 两个应用程序, Client 发送数据包到 Server, Server 收到数据包之后发送回 Client。
使用 TCP/IP & UDP协议, 选择不同的包长度, 每次发送500 个数据包, 重复 20 次
3. 测试结果
|
RTX 环境, TCP/IP 协议测试结果 |
Windows 环境, TCP/IP 协议测试结果 |
|
Packet Size = 1 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 35 us Maximum Time = 54 us Errors = 0 Lost Packets = 0 |
－－ |
|
Packet Size = 16 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 36 us Maximum Time = 55 us Errors = 0 Lost Packets = 0 |
Packet Size = 16 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 55 us Maximum Time = 199 us Errors = 0 Lost Packets = 0 |
|
Packet Size = 32 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 37 us Maximum Time = 54 us Errors = 0 Lost Packets = 0 |
Packet Size = 32 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 58 us Maximum Time = 196 us Errors = 0 Lost Packets = 0 |
|
Packet Size = 64 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 39 us Maximum Time = 51 us Errors = 0 Lost Packets = 0 |
Packet Size = 64 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 58 us Maximum Time = 3400 us Errors = 0 Lost Packets = 0 |
|
Packet Size = 128 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 42 us Maximum Time = 59 us Errors = 0 Lost Packets = 0 |
Packet Size = 128 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 55 us Maximum Time = 166 us Errors = 0 Lost Packets = 0 |
|
Packet Size = 256 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 50 us Maximum Time = 71 us Errors = 0 Lost Packets = 0 |
Packet Size = 256 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 79 us Maximum Time = 653 us Errors = 0 Lost Packets = 0 |
|
Packet Size = 512 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 64 us Maximum Time = 92 us Errors = 0 Lost Packets = 0 |
Packet Size = 512 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 122 us Maximum Time = 495 us Errors = 0 Lost Packets = 0 |
|
Packet Size = 1024 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 92 us Maximum Time = 111 us Errors = 0 Lost Packets = 0 |
Packet Size = 1024 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 212 us Maximum Time = 716 us Errors = 0 Lost Packets = 0 |
|
Packet Size = 1462 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 117 us Maximum Time = 633 us Errors = 0 Lost Packets = 0 |
－－ |
|
Packet Size = 2048 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 124 us Maximum Time = 632 us Errors = 0 Lost Packets = 0 |
Packet Size = 2048 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 165 us Maximum Time = 709 us Errors = 0 Lost Packets = 0 |
|
Packet Size = 4096 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 188 us Maximum Time = 695 us Errors = 0 Lost Packets = 0 |
Packet Size = 4096 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 232 us Maximum Time = 565 us Errors = 0 Lost Packets = 0 |
|
Packet Size = 8192 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 289 us Maximum Time = 1083 us Errors = 0 Lost Packets = 0 |
Packet Size = 8192 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 348 us Maximum Time = 946 us Errors = 0 Lost Packets = 0 |
|
Packet Size = 65535 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 1643 us Maximum Time = 2707 us Errors = 0 Lost Packets = 0 |
Packet Size = 65535 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 2244 us Maximum Time = 2591 us Errors = 0 Lost Packets = 0 |
|
|
|
|
RTX 环境, UDP 协议测试结果 |
Windows 环境, UDP 协议测试结果 |
|
Packet Size = 1 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 32 us Maximum Time = 48 us Errors = 0 Lost Packets = 0 |
Packet Size = 1 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 56 us Maximum Time = 128 us Errors = 0 Lost Packets = 0 |
|
Packet Size = 16 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 32 us Maximum Time = 50 us Errors = 0 Lost Packets = 0 |
Packet Size = 16 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 53 us Maximum Time = 958 us Errors = 0 Lost Packets = 0 |
|
Packet Size = 64 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 35 us Maximum Time = 52 us Errors = 0 Lost Packets = 0 |
Packet Size = 64 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 54 us Maximum Time = 575 us Errors = 0 Lost Packets = 0 |
|
Packet Size = 128 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 38 us Maximum Time = 55 us Errors = 0 Lost Packets = 0 |
Packet Size = 128 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 56 us Maximum Time = 637 us Errors = 0 Lost Packets = 0 |
|
Packet Size = 256 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 46 us Maximum Time = 66 us Errors = 0 Lost Packets = 0 |
Packet Size = 256 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 77 us Maximum Time = 326 us Errors = 0 Lost Packets = 0 |
|
Packet Size = 512 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 60 us Maximum Time = 78 us Errors = 0 Lost Packets = 0 |
Packet Size = 512 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 93 us Maximum Time = 535 us Errors = 0 Lost Packets = 0 |
|
Packet Size = 1024 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 88 us Maximum Time = 105 us Errors = 0 Lost Packets = 0 |
Packet Size = 1024 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 119 us Maximum Time = 742 us Errors = 0 Lost Packets = 0 |
|
Packet Size = 1462 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 111 us Maximum Time = 124 us Errors = 0 Lost Packets = 0 |
－－ |
|
Packet Size = 2048 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 126 us Maximum Time = 149 us Errors = 0 Lost Packets = 0 |
Packet Size = 2048 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 176 us Maximum Time = 960 us Errors = 0 Lost Packets = 0 |
|
Packet Size = 4096 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 186 us Maximum Time = 213 us Errors = 0 Lost Packets = 0 |
Packet Size = 4096 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 243 us Maximum Time = 946 us Errors = 0 Lost Packets = 0 |
|
Packet Size = 8192 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 313 us Maximum Time = 357 us Errors = 0 Lost Packets = 0 |
Packet Size = 8192 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 408 us Maximum Time = 759 us Errors = 0 Lost Packets = 0 |
|
－－ |
Packet Size = 40960 bytes Connections = 1 Messages / Connection = 10000 Minimum Time = 1407 us Maximum Time = 159874 us Errors = 0 Lost Packets = 0 |
5 测试数据分析
使用 TCP/IP 协议, 当传输的数据包长度低于1460上限时, RTX 下数据包传输的实时性明显优于 Windows .
当传输数据包长度超过 1460 上限的大包时, RTX 在应用层分包, Windows 下在 IP 层自动分包。由于 TCP 协议数据传输的可靠性要求, RTX 下大数据包需要接收多次数据包 ACK 报文, RTX 下数据包传输的实时性与 Windows 相当。
使用 UDP 协议传输时, 由于 UDP 协议不需要数据包ACK报文, RTX 实时性得以体现, RTX 下数据包传输的实时性明显优于 Windows 。
6 结论
1. 使用 TCP/IP 协议, 相比于 Windows, RTX 在传输小包(数据包长度低于 1460) 时有明显的实时性。
2. 使用 UDP 协议, 相比于 Windows, RTX 在数据包传输时有明显的实时性。
北京石竹科技股份有限公司提供
投诉建议
提交
PCI 设备 RTX 驱动开发方法