linerate is a command-line utility to print the rate of lines being printed.
For example, if you want to measure the QPS of your server:
$ tail /var/log/my-server.log | grep GET | linerate
9 lines/1s
3 lines/1s
16 lines/1s
15 lines/1s
12 lines/1s
...
Install with go install github.com/spencer-p/linerate@latest.
Usage of ./linerate:
-d string
Duration of time between printing line rates, i.e. inverted frequency (default "1s")
-w int
Number of durations to window together (default 1)