Load testing Telepathy and Async Tcp server

In this project I am load testing Telepathy and Async Tcp Server.

Methodology

The server was compiled with unity 2018.2.18f for linux 64bit headless.

To start a telepathy server:

./server.x86_64 Telepathy 9876

To start an async tcp server:

./server.x86_64 Async 9876

the clients were run using jmeter, in a separate computer going over wifi.

Both the server code and the jmeter test are included in this project.

An error is reported if a transaction takes more than 10 seconds or if it returns unexpected results

Results

Server: Linux, i3-6100U @ 2.30 GHz (2 core, 4 threads) Going over local wifi

Clients	Tel (msg/s)	Async	Tel Lat (ms)	Async Lat	Tel CPU	Async CPU
1	510	407	825	218	24%	50%
50	10571	9832	1610	417	130%	250%
250		16868		293		270%
500		16728		1100		270%
1000		16942		2737		280%

1 thread

With a telepathy server I got this:

$ jmeter -n -t ccutest.jmx -JHOST=pc.local -JPORT=9876 -JTHREADS=1
summary =  20000 in 00:00:39 =  510.9/s Avg:     1 Min:     1 Max:   825 Err:     0 (0.00%)

With a single thread client, telepathy is able to process 510 messages per second. The slowest message took 0.8 seconds. CPU at 24 %

With an async TCP server I got this:

summary =  20000 in 00:00:49 =  407.8/s Avg:     2 Min:     1 Max:   218 Err:     0 (0.00%)

lower throughput. Cpu at 50-60%, but it had much better latency, the worst package took only 0.2 seconds.

50 threads

Telepathy:

$ jmeter -n -t ccutest.jmx -JHOST=pc.local -JPORT=9876 -JTHREADS=50
summary = 1000000 in 00:01:35 = 10571.8/s Avg:     4 Min:     1 Max:  1610 Err:     0 (0.00%)

CPU usage 130-150%.

Async TCP:

summary = 1000000 in 00:01:42 = 9832.3/s Avg:     4 Min:     1 Max:   417 Err:     0 (0.00%)

250% CPU

250 threads

Telepathy: ERROR

at 250 threads, Telepathy choke, it was not able to reply to any message

Async TCP

summary = 5000000 in 00:04:56 = 16868.8/s Avg:    14 Min:     1 Max:   293 Err:     0 (0.00%)

500 threads

Telepathy: ERROR

Async TCP:

summary = 5604554 in 00:05:35 = 16728.8/s Avg:    29 Min:     1 Max:  1100 Err:     0 (0.00%)

1000 threads

Telepathy: ERROR

Async TCP:

summary = 10670731 in 00:10:30 = 16942.7/s Avg:    58 Min:     2 Max:  2737 Err:     0 (0.00%)