今天X淘上入手了一个千兆交换机，于是找来iperf工具来检测交换机性能如何
https://code.google.com/p/iperf/wiki/ManPage
设备：1笔记本、1台式机都是千兆网卡，连上交换机，千兆指示灯亮起，说明设备都正常
开始测试：
1、选定台式机作为server
D:\TDDOWNLOAD\jperf-2.0.0\bin>iperf -s ------------------------------------------------------------ Server listening on TCP port 5001 TCP window size: 8.00 KByte (default) ------------------------------------------------------------
2、选定笔记本作为client
C:\cdown\jperf-2.0.0\bin>iperf -c 10.12.12.46 -t 60 ------------------------------------------------------------ Client connecting to 10.12.12.46, TCP port 5001 TCP window size: 8.00 KByte (default) ------------------------------------------------------------ [128] local 10.12.12.48 port 61429 connected with 10.12.12.46 port 5001 [ ID] Interval Transfer Bandwidth [128] 0.0-60.0 sec 1.75 GBytes 250 Mbits/sec
测试结果：31.25MB
3、每隔2s输出一次，增加参数-i 2，结果也差不多
C:\cdown\jperf-2.0.0\bin>iperf -c 10.12.12.46 -t 60 -i 2 ------------------------------------------------------------ Client connecting to 10.12.12.46, TCP port 5001 TCP window size: 8.00 KByte (default) ------------------------------------------------------------ [128] local 10.12.12.48 port 61453 connected with 10.12.12.46 port 5001 [ ID] Interval Transfer Bandwidth [128] 0.0- 2.0 sec 57.3 MBytes 240 Mbits/sec [128] 2.0- 4.0 sec 60.1 MBytes 252 Mbits/sec [128] 4.0- 6.0 sec 57.1 MBytes 240 Mbits/sec [128] 6.0- 8.0 sec 53.3 MBytes 223 Mbits/sec [128] 8.0-10.0 sec 59.9 MBytes 251 Mbits/sec [128] 10.0-12.0 sec 60.6 MBytes 254 Mbits/sec
4、总结：1000Mbps理论上应该有1000Mbps/8=125MB，但实际只有31M，看来价格便宜确实质量一般啊，实际在传输文件时，最大也可以达到50M，但和理论值相差甚远，不过比百兆比起快多了哈！
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5、补充：
-l：缓冲区大小，默认8KB
-w：tcp窗口，默认8KB
-d：同时双向传输测试
修改之后，测试结果和之前相差还蛮大的
D:\TDDOWNLOAD\jperf-2.0.0\bin>iperf -s -w 1M -l 1M ------------------------------------------------------------ Server listening on TCP port 5001 TCP window size: 1.00 MByte ------------------------------------------------------------
C:\cdown\jperf-2.0.0\bin>iperf -c 10.12.12.46 -t 60 -i 2 -w 1M ------------------------------------------------------------ Client connecting to 10.12.12.46, TCP port 5001 TCP window size: 1.00 MByte ------------------------------------------------------------ [128] local 10.12.12.48 port 62200 connected with 10.12.12.46 port 5001 [ ID] Interval Transfer Bandwidth [128] 0.0- 2.0 sec 136 MBytes 569 Mbits/sec [128] 2.0- 4.0 sec 134 MBytes 561 Mbits/sec [128] 4.0- 6.0 sec 136 MBytes 571 Mbits/sec [128] 6.0- 8.0 sec 136 MBytes 571 Mbits/sec [128] 8.0-10.0 sec 136 MBytes 571 Mbits/sec [128] 0.0-10.3 sec 695 MBytes 568 Mbits/sec
C:\cdown\jperf-2.0.0\bin>iperf -c 10.12.12.46 -t 60 -i 2 -w 1M -d ------------------------------------------------------------ Server listening on TCP port 5001 TCP window size: 1.00 MByte ------------------------------------------------------------ ------------------------------------------------------------ Client connecting to 10.12.12.46, TCP port 5001 TCP window size: 1.00 MByte ------------------------------------------------------------ [136] local 10.12.12.48 port 62224 connected with 10.12.12.46 port 5001 [160] local 10.12.12.48 port 5001 connected with 10.12.12.46 port 51787 [ ID] Interval Transfer Bandwidth [136] 0.0- 2.0 sec 95.9 MBytes 402 Mbits/sec [160] 0.0- 2.0 sec 182 MBytes 765 Mbits/sec [136] 2.0- 4.0 sec 130 MBytes 544 Mbits/sec [160] 2.0- 4.0 sec 98.0 MBytes 411 Mbits/sec [136] 4.0- 6.0 sec 131 MBytes 548 Mbits/sec [160] 4.0- 6.0 sec 113 MBytes 475 Mbits/sec [136] 6.0- 8.0 sec 124 MBytes 521 Mbits/sec [160] 6.0- 8.0 sec 155 MBytes 651 Mbits/sec
参考