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"A performance test is a test of a complete system carried out under reproducible and production-like conditions, where statistically significant response times are measured over a period of time when the system is under a known business emulation load." |
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Performance testing includes:
- Stepped-load test - the classic test that establishes how response times vary as load increases and reveals the 'kink' point where the system's capacity been reached.
- Stress test - where the number of virtual users generate load that is beyond the "kink" in the Standard Performance Curve so that the system is under abnormal stress.
- Extended load (Soak) test - execute the performance test for a long period of time to identify resource issues.
- Scalability test - running the same performance test against the same applications on different target platforms to measure its scalability.
- Spike test - virtual users are synchronised at key points in a transaction to elucidate defects that result from concurrent usage.
- Fail over under load - the system is failed while under load to determine if the standby system seamlessley maintains the continuity of business processes.
- Functional testing under load - Previous successfully executed functional tests can fail when executed under load.
- Regression test - Re-execution of performance test following a hardware or software upgrade or patch.
- Network load test - Execution of performance tests where load is injected at strategic network points.
- Logon test - where large numbers of users attempt to logon.
- Post-deployment monitoring - regularly re-execute performance test scripts.
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