NTTTCP
NTTTCP是微软推出的一款网络吞吐量基准测试工具，使用它可以测试网络带宽和吞吐量性能。 NTTTCP 以网络为目标进行测试，可最大程度地减少可能影响性能的其他资源的使用。
使用NTTTCP测试网络吞吐量
测试同一主机
以下为使用ntttcp测试本地网络吞吐量的实例，即发送和接收为同一主机。
先使用ntttcp -r启动接收端，然后再使用ntttcp -s启动发送端，测试一段时间后Ctrl+c结束测试，随后输出测试结果。
发送端测试结果说明如下，接收端类同。
1NTTTCP for Linux 1.4.0
2---------------------------------------------------------
323:52:54 INFO: 64 threads created
423:52:54 INFO: 64 connections created in 21933 microseconds
523:52:54 INFO: Network activity progressing...
6^C23:53:08 INFO: Interrupted by Ctrl+C
723:53:08 INFO: Test run completed.
823:53:08 INFO: Test cycle finished.
923:53:08 INFO: receiver exited from current test
1023:53:09 INFO: 64 connections tested
1123:53:09 INFO: ##### Totals: #####
1223:53:09 INFO: test duration :14.44 seconds ## 测试时长
1323:53:09 INFO: total bytes :12770607104 ## 总字节数
1423:53:09 INFO: throughput :7.08Gbps ## 吞吐量
1523:53:09 INFO: retrans segs :28570
1623:53:09 INFO: cpu cores :1
1723:53:09 INFO: cpu speed :2599.998MHz
1823:53:09 INFO: user :6.23%
1923:53:09 INFO: system :76.45%
2023:53:09 INFO: idle :0.00%
2123:53:09 INFO: iowait :0.00%
2223:53:09 INFO: softirq :17.31%
2323:53:09 INFO: cycles/byte :2.94
2423:53:09 INFO: cpu busy (all) :57.87% ## CPU使用率
25--------------------------------------------------------- 测试不同主机
在发送方和接收方上运行 NTTTCP 测试 300 秒（5 分钟）。 发送方和接收方必须为 -t 参数指定相同的测试持续时间。 如未指定则测试时间默认为 60 秒。
注意：其中接收端和发送端设置的IP都是接收端IP(198.181.22.33)。
- 接收端命令
1➜ ~ ntttcp -r 198.181.22.33
2NTTTCP for Linux 1.4.0
3---------------------------------------------------------
401:23:55 INFO: 17 threads created
501:25:27 INFO: Network activity progressing...
601:26:27 INFO: Test run completed.
701:26:27 INFO: Test cycle finished.
801:26:27 INFO: ##### Totals: #####
901:26:27 INFO: test duration :60.00 seconds
1001:26:27 INFO: total bytes :25073568
1101:26:27 INFO: throughput :3.34Mbps
1201:26:27 INFO: retrans segs :0
1301:26:27 INFO: cpu cores :1
1401:26:27 INFO: cpu speed :2599.998MHz
1501:26:27 INFO: user :0.65%
1601:26:27 INFO: system :1.74%
1701:26:27 INFO: idle :97.23%
1801:26:27 INFO: iowait :0.00%
1901:26:27 INFO: softirq :0.39%
2001:26:27 INFO: cycles/byte :172.64
2101:26:27 INFO: cpu busy (all) :5.12%
22---------------------------------------------------------- 发送端命令
1root@aly:~# ntttcp -s 198.181.22.33
2NTTTCP for Linux 1.4.0
3---------------------------------------------------------
416:25:26 INFO: 64 threads created
516:25:27 INFO: 64 connections created in 167014 microseconds
616:25:27 INFO: Network activity progressing...
716:26:27 INFO: Test run completed.
816:26:27 INFO: Test cycle finished.
916:26:33 INFO: 64 connections tested
1016:26:33 INFO: ##### Totals: #####
1116:26:33 INFO: test duration :60.00 seconds
1216:26:33 INFO: total bytes :28704768
1316:26:33 INFO: throughput :3.83Mbps
1416:26:33 INFO: retrans segs :11091
1516:26:33 INFO: cpu cores :2
1616:26:33 INFO: cpu speed :2499.998MHz
1716:26:33 INFO: user :0.46%
1816:26:33 INFO: system :0.20%
1916:26:33 INFO: idle :99.25%
2016:26:33 INFO: iowait :0.01%
2116:26:33 INFO: softirq :0.08%
2216:26:33 INFO: cycles/byte :78.25
2316:26:33 INFO: cpu busy (all) :1.96%
24---------------------------------------------------------Windows测试实例
以上实例均为Linux中测试结果，Windows实例如下：
1ntttcp -r -m [<number of CPU cores> x 2],*,<receiver IP address> -t <seconds> 1D:\dsk2>ntttcp -r -m 4,*,127.0.0.1 -t 120
2Copyright Version 5.40
3Network activity progressing...
4
5Thread Time(s) Throughput(KB/s) Avg B / Compl
6====== ======= ================ =============
7 0 0.000 0.000 65535.615
8 1 0.000 0.000 65535.615
9 2 0.000 0.000 65535.563
10 3 0.000 0.000 65535.759
11
12
13##### Totals: #####
14
15
16 Bytes(MEG) realtime(s) Avg Frame Size Throughput(MB/s)
17================ =========== ============== ================
18 339669.812500 120.009 21830.785 2830.370
19
20
21Throughput(Buffers/s) Cycles/Byte Buffers
22===================== =========== =============
23 45285.912 4.170 5434717.000
24
25
26DPCs(count/s) Pkts(num/DPC) Intr(count/s) Pkts(num/intr)
27============= ============= =============== ==============
28 3331.150 40.811 52187.336 2.605
29
30
31Packets Sent Packets Received Retransmits Errors Avg. CPU %
32============ ================ =========== ====== ==========
33 16315022 16315016 23 5 99.944 1D:\dsk2>ntttcp -s -m 4,*,127.0.0.1 -t 120
2Copyright Version 5.40
3Network activity progressing...
4
5
6Thread Time(s) Throughput(KB/s) Avg B / Compl
7====== ======= ================ =============
8 0 0.000 0.000 65536.000
9 1 0.000 0.000 65536.000
10 2 0.000 0.000 65536.000
11 3 0.000 0.000 65536.000
12
13
14##### Totals: #####
15
16
17 Bytes(MEG) realtime(s) Avg Frame Size Throughput(MB/s)
18================ =========== ============== ================
19 339669.687500 120.009 21830.763 2830.368
20
21
22Throughput(Buffers/s) Cycles/Byte Buffers
23===================== =========== =============
24 45285.886 4.170 5434715.000
25
26
27DPCs(count/s) Pkts(num/DPC) Intr(count/s) Pkts(num/intr)
28============= ============= =============== ==============
29 3331.166 40.811 52187.392 2.605
30
31
32Packets Sent Packets Received Retransmits Errors Avg. CPU %
33============ ================ =========== ====== ==========
34 16315027 16315022 23 5 99.944如果在Linux和Windows之间进行吞吐量测试，命令格式参考Windows实例中的使用方法。