Sun OpenSSO Enterprise 8.0 Performance Tuning Guide

AMTUNE_MEM_MAX_HEAP_SIZE_RATIO

Description:

These parameters are used to calculate the maximum and minimum heap sizes. Options include:

  • AMTUNE_MEM_MAX_HEAP_SIZE_RATIO

  • AMTUNE_MEM_MIN_HEAP_SIZE_RATIO

Required:

Yes

Sample Values:
Maximum heap size ratio

7/8

Minimum heap size ratio

1/2

Additional Information:

Do not modify these ratios unless tests show significant improvement in performance.

Web Server 7, Application Server 9.1 and GlassFish v2 use about 1/8 of the OpenSSO Enterprise JRE process heap size, leaving about 7/8 for OpenSSO Enterprise. You should change these ratios only for 64-bit JRE. For 32-bit JRE, keep the default values.