GATLING

DSLing your System For Scalability Testing Using Gatling Sept 23 2014, Dublin Scala User Group

GATLING

Speaking for ourselves and not our employer

Thanks!

• The Team

• Gatling Walkthrough

• Example Results

• Our App - and what we need

• and a lab!

The Team

CHRIS LAWLESS

Code Wrangler Polygon creator

KEVIN YU WEI XIA

Code Wrangler

FERGAL CARROLL

Code Wrangler @phergalkarl

CIARAN Ó HUALLACHÁIN Code Wrangler

AMAN KOHLI Architect @akohli

BILL MONKS Leader in Chief

@billmonks

The Team

HACKENBUSHWe’re Not Experts

Enterprise Mobile

Many Users, Many Systems

• > 20k users

• ~ 20k systems (joke!)

Lots of different security access and systems

Device plurality

Many Locations, Many Networks

Gatling • http://gatling.io | https://

github.com/gatling/

• Built on Netty + Akka + Scala

• add to sbt -

libraryDependencies += "io.gatling.highcharts" % "gatling-charts-highcharts" % "2.0.0-RC5"

• Good start http://www.thoughtworks.com/insights/blog/gatling-take-your-performance-tests-next-level

Why Gatling

• Powerful, simple DSL scn.users(10).ramp(30).protocolConfig(httpConf)!

• Easy to add security and other elements

• Varying transport support

• HTTP

• Websockets

• JMS

• We found Jmeter fiddly.

Why Gatling (2)

• Great Reporting and Charting

• Active Users, Requests

• Over time

• See Example 1

• walk through Details and Global views

Anatomy of a Gatling Script

Example

Transport, and hostheader cfg

Example

Transport, and hostheader cfg

scenario name Req Name Method

endpoint

Example

Transport, and hostheader cfg

Making it a bit like flod

GITHUB.COM/SPUMKO/FLOD

$ flod -n 2000 -t 1500 -c 100..1000 -v http://target-place!!

GITHUB.COM/SPUMKO/FLOD

$ flod -n 2000 -t 1500 -c 100..1000 -v http://target-place!!

num req per batch

timeout

range of concurrent request per batch - “rate”

FLOD OUTPUT## 6k page results ec2-user@ip-10-199-51-233 node-hapi]$ flod -n 2000 -t 1500 -c 100..1000 -v http://localhost/loremipsum-6k-ish.htmlThis is Flod, version 0.2.2Copyright 2013 Walmart, http://github.com/spumko/flod!Benchmarking (hold on)...!Server Requests/sec Latency (ms) --------------------------------------- ------------ ---------------http://localhost/loremipsum-6k-ish.html 100 96.48 ± 18.54 http://localhost/loremipsum-6k-ish.html 200 164.24 ± 17.03 http://localhost/loremipsum-6k-ish.html 300 263.80 ± 62.44 http://localhost/loremipsum-6k-ish.html 400 359.61 ± 49.20 http://localhost/loremipsum-6k-ish.html 500 437.66 ± 58.69 http://localhost/loremipsum-6k-ish.html 600 481.29 ± 120.04http://localhost/loremipsum-6k-ish.html 700 606.74 ± 114.45http://localhost/loremipsum-6k-ish.html 800 555.08 ± 133.74http://localhost/loremipsum-6k-ish.html 900 674.08 ± 190.91http://localhost/loremipsum-6k-ish.html 1000 763.27 ± 69.25

## running with high timeout - doubling responses times vs nginx direct [ec2-user@ip-10-199-51-233 node-hapi]$ ../node_modules/flod/bin/flod -n 2000 -t 4500 -c 100..1000 -v http://localhost:8000This is Flod, version 0.2.2Copyright 2013 Walmart, http://github.com/spumko/flod!Benchmarking (hold on)...!Server Requests/sec Latency (ms) --------------------- ------------ ----------------http://localhost:8000 100 200.55 ± 39.40 http://localhost:8000 200 389.54 ± 67.39 http://localhost:8000 300 558.14 ± 112.57 http://localhost:8000 400 777.09 ± 160.01 http://localhost:8000 500 970.61 ± 305.76 http://localhost:8000 600 1032.37 ± 274.44http://localhost:8000 700 1216.49 ± 249.94http://localhost:8000 800 1483.31 ± 690.64http://localhost:8000 900 1559.54 ± 805.31http://localhost:8000 1000 1909.23 ± 845.81

NQF (not quite Flod)

Results

Random Wait Test• 100 users, 100 invocations each

• ramp to 100 users over 20 seconds

• Tests took 1 minute to run

• 10k requests

Users over Execution

Response Time

Requests and Responses per Second

Our ApplicationAnd what we need

THE REFLEKTOR

Security Pass

Employee DevicesSensors

The Physical World

Security Services

AuthZAuthN

…

Eventing Engine Bridge

Payment Services

Access Services

Printing Services

App Services and Resources

the ReflektorBridge and New Services

thePROXY First Release

THE FLOW

• The Protocol

• Security - Gateway Access

• Federated Identity - kinda

PROTOCOLRequest

json body

target

headers

body/post-data

loginfo

request = { URL = "http://www.citigroup.net/", method = "GET", timeout = 19500, clientInfo = { identifier = “…E”, model = "iPad Simulator", systemName = "iPhone OS", systemVersion = "7.1", }, headers = { Accept = "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8", Cookie = "CGPLNG=ENG; JSESSIONID_CGNR3=..”, "User-Agent" = "Mozilla/5.0 (iPad; CPU OS 7_1 like Mac OS X) AppleWebKit/537.51.2 (KHTML, like Gecko) Mobile/11D167" }, logEntries = [ { URL = “https://cinternal.site/target/fooa”, downstreamDuration = 656, httpMethod = "GET", roundtripDuration = 3461, statusCode = 200 } ] }

RESPONSE body = “<base64>", code = 200, duration = 31, headers = { "Accept-Ranges" = [ "bytes" ], "Content-Length" = [ 225 ], "Content-Type" = [ "text/html" ], Date = [ "Thu, 29 May 2014 15:28:29 GMT" ], Etag = [ "\"e1-4e50c74f\"" ], "Last-Modified" = [ "Sun, 21 Aug 2011 08:52:31 GMT" ] }, message = "OK"}

– Anon.

Any Questions?

Lab

Invocation

• Fixed Endpoint

• http://cakohli.local:9001/waitfor/500

• Random Endpoint

• http://cakohli.local:9001/wait

• Interleave

Thank you Scala Dublinand @gilttech and @greheine and Joe McCarthy (@jmcarthy99) and

@nounproject

NOUN PROJECTS THANKS

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