First test is done using Docker Swarm configured so that the demo_web service runs in 16 copies.
This is supposed to output the maximum performance because each single-process and single-threaded (as node.js is)
would be able to fully utilize the assigned CPU
$ siege http://localhost:5001
** SIEGE 4.0.4
** Preparing 25 concurrent users for battle.
The server is now under siege...^C
Lifting the server siege...
Transactions: 182728 hits
Availability: 100.00 %
Elapsed time: 7.23 secs
Data transferred: 4.33 MB
Response time: 0.00 secs
Transaction rate: 25273.58 trans/sec
Throughput: 0.60 MB/sec
Concurrency: 23.95
Successful transactions: 182728
Failed transactions: 0
Longest transaction: 0.03
Shortest transaction: 0.00
This next step is also done on Docker Swarm but with just one instance of the service:
$ siege http://localhost:5001
** SIEGE 4.0.4
** Preparing 25 concurrent users for battle.
The server is now under siege...^C
Lifting the server siege...
Transactions: 82888 hits
Availability: 100.00 %
Elapsed time: 9.01 secs
Data transferred: 1.98 MB
Response time: 0.00 secs
Transaction rate: 9199.56 trans/sec
Throughput: 0.22 MB/sec
Concurrency: 24.80
Successful transactions: 82888
Failed transactions: 0
Longest transaction: 0.01
Shortest transaction: 0.00
This next test runs directly on node.js without Docker and is the exact same application:
$ siege http://localhost:5001
** SIEGE 4.0.4
** Preparing 25 concurrent users for battle.
The server is now under siege...^C
Lifting the server siege...
Transactions: 72250 hits
Availability: 100.00 %
Elapsed time: 6.10 secs
Data transferred: 1.72 MB
Response time: 0.00 secs
Transaction rate: 11844.26 trans/sec
Throughput: 0.28 MB/sec
Concurrency: 24.85
Successful transactions: 72250
Failed transactions: 0
Longest transaction: 0.02
Shortest transaction: 0.00
This last tests uses a modification of the original application but with clustering:
$ siege http://localhost:5001
** SIEGE 4.0.4
** Preparing 25 concurrent users for battle.
The server is now under siege...^C
Lifting the server siege...
Transactions: 163496 hits
Availability: 100.00 %
Elapsed time: 8.63 secs
Data transferred: 3.88 MB
Response time: 0.00 secs
Transaction rate: 18945.07 trans/sec
Throughput: 0.45 MB/sec
Concurrency: 24.46
Successful transactions: 163496
Failed transactions: 0
Longest transaction: 0.03
Shortest transaction: 0.00