Tune hardware capacity and settings

These parameters include considerations for selecting and configuring the hardware on which the appservers can run.

• Optimize disk speed

  • Description: Disk speed and configuration can have a dramatic effect on the performance of appservers that run applications that are heavily dependent on database support, that use extensive messaging, or are processing workflow. Using disk I/O subsystems that are optimized for performance, for example RAID array, are essential components for optimum appserver performance in these environments.

  • How to view or set: None

  • Default value: None

  • Recommended value: Spread the disk processing across as many disks as possible to avoid contention issues that typically occur with 1 or 2 disk systems. Placing database tables on disks that are separate from the disks used for the database log files can reduce disk contention and improve throughput.

• Increase processor speed and processor cache

  • Description: In the absence of other bottlenecks, increasing the processor speed often helps throughput and response times. A processor with a larger L2 or L3 cache can yield higher throughput even if the processor speed is the same as a CPU with a smaller L2 or L3 cache.

  • How to view or set: None

  • Default value: None

  • Recommended value: None

• Increase system memory

  • Description: Increase memory to prevent the system from paging memory to disk, improving performance. Allow a minimum of 256MB of memory for each processor. Adjust the available memory when the system is paging and processor utilization is low because of the paging.

  • How to view or set: None

  • Default value: None

  • Recommended value: 512MB per appserver

• Run network cards and network switches at full duplex.

  • Description: Running at half duplex decreases performance. Verify that the network speed of adapters, cables, switches, and other devices can accommodate the required throughput.

  • How to view or set: None

  • Default value: None

  • Recommended value: Verify that the highest speed is in use on 10/100/1000 Ethernet networks.

 

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