Adding: latency test, more control, more stats, etc..

[zveinn]

This PR does the following:

• Adds latency testing
• Adds TTFB testing
• Adds more control over buffers, timers, etc..
• Adds multi-socket testing
• Adds a preset for latency / TTFB testing ( -latencyTest )
• Adds json stdout printing

Latency testing only

Using the flag -latencyTest is a shortcut for a 60 second low-bandwidth latency test @guptaarvindk

Notes

The -severIP can be used to define a server IP if two or more hosts are on the same machine. Technically this won't be needed to client deployments. We also introduce a check for the real remote IP incase clients are using proxies or LB's. The real IP is hidden if it's the same as the reported one.


Additionally, error counts and latest error message for each 1 second increments were added just so we can see if something is going wrong without the entire window spamming in errors. There is a flag -printAll which can be enabled to print all errors.

┌───────────┬───────────┬──────┬──────────┬───────┬──────────┬─────────────┬───────────────┬─────────┬────────────┐
│ Local     │ Remote    │ RX # │ RX       │ TX #  │ TX       │ MS high/low │ TTFB high/low │ Error # │ Last Error │
│ 127.0.0.1 │ 127.0.0.1 │ 9945 │ 6.5 GB/s │ 25503 │ 6.7 GB/s │ 27/0        │ 17/0          │ 0       │            │
└───────────┴───────────┴──────┴──────────┴───────┴──────────┴─────────────┴───────────────┴─────────┴────────────┘

[klauspost]

👍🏼

[harshavardhana]

will test this tomorrow in our DC across 8 nodes

[harshavardhana]

can you remove binary from the commit? and also the hosts.txt file?

[zveinn]

:S the hosts.txt was meant to be an example for a host file, but np. I'll remove it and the binary.. I don't know how that got in there. I squashed it all into one commit @harshavardhana