Estimating Heap Sizes
General Memory Guidelines
Minimum physical/RAM memory on the host 16GB for production use
Minimum heap ( -Xms ) must equal set maximum heap ( -Xmx )
Minimum heap size 8GB for production use
Minimum unallocated host physical/RAM memory should be no less than 1/3 of total physical RAM to allow space for OS, application binaries, and SCM integration
For heap >= 8GB recommend using G1GC garbage collector
Guidelines for Heap Sizing
These profiles help gauge the typical physical memory requirements needed for a dedicated server host running IQ Server.Due to the inherent complexities of use cases, one size does not fit all and this should only be interpreted as a guideline.
Profile Use Case | Physical/RAM Memory | Heap Settings |
|---|---|---|
Personal (no. of applications< 20) | 8GB | -Xmx4g -Xms4g |
Small team (no. of applications <100) | 16GB | -Xmx8g -Xms8g -XX:+UseG1GC |
Medium team (no. of applications <500) | 24GB | -Xmx16g -Xms16g -XX:+UseG1GC |
Large, enterprise (no. of applications > 500) | 32GB+ | Xmx24g -Xms24g -XX:+UseG1GC |