Performance Tuning

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Performance Tuning

Performance tuning is the improvement of system performance.

Systematic tuning follows these steps

• Assess the problem and establish numeric values that categorize acceptable behavior.
• Measure the performance of the system before modification.
• Identify the part of the system that is critical for improving the performance. This is called the bottleneck.
• Modify that part of the system to remove the bottleneck.
• Measure the performance of the system after modification.
• If the modification makes the performance better, adopt it. If the modification makes the performance worse, put it back the way it was.

Performance Tuning in cassandra includes following topics –

• Tuning commit logs and memtables
• Caching and buffer sizing
• Stress testing and JVM tuning