Tuning Principles

Performance tuning is to adjust the hardware, OS, and applications of a computer system based on an in-depth understanding of the system to maximum the performance and meet the service requirements. Observe the following principles when tuning the performance:

• During performance analysis, use performance analysis tools such as nmon to analyze system resource bottlenecks from multiple aspects. The poor system performance may not be caused by the system itself but by other factors.
• Adjust only one parameter of a specific aspect that affects the performance at a time. It is difficult to determine which parameter impacts on the performance when multiple parameters are adjusted at the same time.
• During system performance analysis, the performance analysis tool occupies certain system resources, such as CPU and memory resources. The running of the analysis tool may cause a more serious resource bottleneck in some aspect of the system.