TCP Measurement Instrumentation
There are several mechanisms that can be used to observe performance of TCP in a system. In particular, on Linux there are:
Of these, only
is supported by "mainline" Linux as of December 2014. There are plans for a meeting in early 2015 to discuss requirements for TCP instrumentation. Interested parties include engineers from Google, Facebook, Akamai, and the Web10G
Systems such as DTrace
may be useful on other types of operating system.