notes

Performance Test

• Tools
• Types

Tools

1. Infrastructure tests
   • Disks - fio
   • CPU - phoronix

       phoronix-test-suite benchmark smallpt
     

   • network - iperf3

       # server
       iperf3 -s
     
       # client
       iperf3 -c server-ip
     

2. Test static load
   • ab - a lot of simultaneous requests to the same url
   • httperf - requests by list of urls with delay
   • sysbench - for MySQL
   • pgbench - for PostgreSQL
   • tcpreplay - record all tcp packages and resend them
3. Test scripts
   • write custom scripts by requesting API and recording duration
4. Requirements compliance
   • Requests at specific time with specific concurrency with analytics
   • Apache.JMeter - simple scripts (Groovy, Java, JavaScript)
   • wrk - lua
   • Yandex.Tank - scalabe (Go, Python)

Types

1. Load
   • increase load sequentially or step by step
   • Detect
     • degradation points
     • downtime point
     • error rate increase
2. Stability
   • Run some load for long time (the whole day or week)
   • Detect
     • resources leaks (memory, file descriptors and so on)
3. Stress
   • Run load which is more than expectable, then some low load, then some very high load and so on
   • Detect
     • How system recovers after temporary spykes in traffic
4. Volume
   • Run some load for long time
   • Detect
     • how fast datastore grows
     • what would happend after a year, 5 years, 10 years
5. ScalabilitY
   • Check if we add clones can we increase throughput