Disabling Processor Prefetcher Options

By default, Processor Prefetcher Options are enabled to provide optimal performance for most environments. In some cases, disabling these options can improve performance.

IMPORTANT:

To verify that you can improve performance in your environment, perform application bench marking before you disable a processor prefetcher option.

Procedure
  1. From the System Utilities screen, select System Configuration > BIOS/Platform Configuration (RBSU) > Power and Performance Options > Processor Prefetcher Options.
  2. Select a setting.

    • HW Prefetcher

    • Adjacent Sector Prefetcher

    • DCU Stream Prefetcher

    • DCU IP Prefetcher

    • XPT Prefetcher

      NOTE:

      This setting must be enabled when Sub-NUMA Clustering is enabled.

    • LLC Prefetch

  3. Select Disabled.
  4. Save your changes.