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testing for capacity for
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Sergey Vysotskiy
[email protected]
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3ELEMENTS OF PERFORMANCE
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Client
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Internet Weather Client
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Internet Weather Client Your Pretty Servers
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NEXT 30 MINUTES: HOW TO COUNT SERVERS
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NEXT 30 MINUTES: HOW TO COUNT SERVERS GOAL INFLUENCE ON TESTS
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NEXT 30 MINUTES: HOW TO COUNT SERVERS GOAL INFLUENCE ON TESTS ENVIRONMENT INFLUENCE ON TESTS
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NEXT 30 MINUTES: HOW TO COUNT SERVERS GOAL INFLUENCE ON TESTS ENVIRONMENT INFLUENCE ON TESTS SHINY TOOLS WE LIKE
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ENVIRONMENT ENVIRONMENT https://www.flickr.com/photos/gcwest/6575768243/
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Monolithic
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Micro Services Monolithic
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No content
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No content
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100+ Services
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100+ Services Frequent Changes
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100+ Services Frequent Changes Simplify!
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Simplify!
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Math (pv2/2)+p=const Do the
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There’s exceptions
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Weird exceptions
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MOCK all the things
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Mock should be FAST
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Mock should be FLEXIBLE
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DO THE DECOMPOSITION If problem looks really hard
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ENVIRONMENT IMPACT ON TESTS https://www.flickr.com/photos/coofdy/12989245854/
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What do we test for? CAPACITY!
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We need System limits UX limits Time To Restore
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Test LESS
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Test LESS
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Test LESS
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Test LESS
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Test LESS
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VIRTUAL USERS Let’s define tests with
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VIRTUAL USERS Remember decomposition?
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THE ONLY THING THAT SERVER KNOW REQUEST DISTRIBUTION
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THE ONLY THING THAT SERVER KNOW CONNECTIONS NUMBER
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HIT-BASED MODEL Such wow! Very rescue!
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10% of A 40% of B 50 % of C 10000 RPS
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10% of A 40% of B 50 % of C 10000 RPS Test data
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10% of A 40% of B 50 % of C 10000 RPS Test itself
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Input data: Monitoring
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Input data: Experience
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WHY HIT-BASED MODEL IS AWESOME? 3 reasons
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1. Easy to analyze.
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2. Easy to change.
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3. Easy to plan with.
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SMALL SECRET* *Don’t try with stateful protocols.
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SMALL SECRET* *Still works for stateful applications.
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HIT-BASED MODEL Such wow! Very rescue!
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ENVIRONMENT TOOLS https://www.flickr.com/photos/ebarney/3348965637/
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IN-HOUSETools Protocols
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IN-HOUSETools Protocols HTTP
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JMeter: designed for VU
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JMeter: OK with plugins
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JMeter: wow RPS shaping
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JMeter: preformance :-(
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Yandex.Tank: some history
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address=203.0.113.1 port=80 rps_schedule=const(10, 10m) header_http = 1.1 headers = [Host: www.target.example.com] [Connection: close] ammofile=/tmp/access.log ammo_type=access
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address=203.0.113.1 port=80 rps_schedule=const(10, 10m) header_http = 1.1 headers = [Host: www.target.example.com] [Connection: close] ammofile=/tmp/access.log ammo_type=access
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address=203.0.113.1 port=80 rps_schedule=const(10, 10m) header_http = 1.1 headers = [Host: www.target.example.com] [Connection: close] ammofile=/tmp/access.log ammo_type=access
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address=203.0.113.1 port=80 rps_schedule=const(10, 10m) header_http = 1.1 headers = [Host: www.target.example.com] [Connection: close] ammofile=/tmp/access.log ammo_type=access
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address=203.0.113.1 port=80 rps_schedule=const(10, 10m) header_http = 1.1 headers = [Host: www.target.example.com] [Connection: close] ammofile=/tmp/access.log ammo_type=access
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address=203.0.113.1 port=80 rps_schedule=const(10, 10m) header_http = 1.1 headers = [Host: www.target.example.com] [Connection: close] uris = / /lekjfvnieoqr?fvjgr=werb245
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Yandex.Tank: in action
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RAW DATA + R/PANDAS/WHATEVER
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Yandex.Tank: built-in reports
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Yandex.Tank: built-in reports
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Production Monitoring if it’s good enough
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Automate all the things!
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Target LoadGen Monitoring Report Jenkins
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Sergey Vysotskiy
[email protected]
Thanks! https://www.flickr.com/photos/30389420@N08/15073997375/