PsPing implements Ping functionality, TCP ping, latency and bandwidth measurement. Use the following command-line options to show the usage for each test type
TCP ping usage: psping [[-6]|[-4]] [-h [buckets | <val1>,<val2>,...]] [-i <interval>] [-l <requestsize>[k|m] [-q] [-t|-n <count>] [-w <count>] <destination:destport>
-h
Print histogram (default bucket count is 20).
If you specify a single argument, it's interpreted as a bucket count and the histogram will contain that number of buckets covering the entire time range of values. Specify a comma-separated list of times to create a custom histogram (e.g. "0.01,0.05,1,5,10").
-i
Interval in seconds. Specify 0 for fast ping.
-l
Request size. Append 'k' for kilobytes and 'm' for megabytes.
-n
Number of pings or append 's' to specify seconds e.g. '10s'.
-q
Don't output during pings.
-t
Ping until stopped with Ctrl+C and type Ctrl+Break for statistics.
-w
Warmup with the specified number of iterations (default is 1).
-4
Force using IPv4.
-6
Force using IPv6.
For high-speed ping tests use -q and -i 0.
为了能够实现对网络延迟的监测，我们可以使用TCP协议进行ping，其原理是，先在客户端和服务端建立一个tcp连接，然后发出一个检测包，测量响应时间。它和ping的普通区别，是在测量前要建立一个tcp连接。因此，测试的对象必须开放一个tcp端口。另外，tcp ping工具没有在os里面提供，必须自己开发或者下载工具。
原文链接:http://blog.csdn.net/shaunfang/article/details/18412521