JDK-8186248 : Allow more flexibility in selecting Heap % of available RAM
- Type: Enhancement
- Component: hotspot
- Sub-Component: gc
- Affected Version: 8u144
- Priority: P3
- Status: Resolved
- Resolution: Fixed
- Submitted: 2017-08-15
- Updated: 2024-06-04
- Resolved: 2017-08-31
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| JDK 10 |
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10 b23Fixed  |
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Description
A customer has asked if it would be possible to specify an option that would allow the VM to select a percentage of available RAM. This becomes important when running the JVM in a Docker container where the amount of RAM available to a Java process can vary. The customer would like to use as much available RAM as possible rather than counting on ergonomics to pick the amount for them. The -XX:Min/MaxRAMFraction options come close to providing what the customer wants but they would either prefer a new set of flags that would represent a % of total rather than a ratio or they would be ok if we change the existing flags to a floating point value. The new flag could be named -XX:MaxRAMPercentage=xx
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