Memory use on 64-bit platforms

With 64-bit addressing, you can have larger buffer pools to reduce the amount of I/O operations to obtain data from disks.

Because 64-bit platforms allow for larger memory-address space, the maximum values for the following memory-related configuration parameters are larger on 64-bit platforms:
  • BUFFERPOOL
  • CLEANERS
  • DS_MAX_QUERIES
  • DS_TOTAL_MEMORY
  • LOCKS
  • SHMADD
  • SHMVIRTSIZE

The machine notes for each 64-bit platform lists the maximum values for these configuration parameters and platform-specific parameters such as SHMMAX. For more information about the configuration parameters, see the HCL Informix® Administrator's Reference and the chapter on shared memory in the HCL Informix Performance Guide.


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