JDK-7110718 : -XX:MarkSweepAlwaysCompactCount=0 crashes the JVM
- Type: Bug
- Component: hotspot
- Sub-Component: gc
- Affected Version: hs23
- Priority: P3
- Status: Closed
- Resolution: Fixed
- OS: generic
- CPU: generic
- Submitted: 2011-11-10
- Updated: 2012-03-22
- Resolved: 2012-01-20
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| JDK 7 | JDK 8 | Other |
|---|---|---|
7u4Fixed  |
8Fixed |
hs23Fixed |
Description
Running hotspot with "-XX:+UseConcMarkSweepGC -XX:MarkSweepAlwaysCompactCount=0" will crash the VM. Email from Ramki: It's because MaxSweepAlwaysCompactCount is used to divide the (serial old) gc count and gives a divide by zero exception when set to zero. Perhaps the flag should be set to a minimum value of 1 in Arguments::check_vm_args_consistency()? If folks agree, could someone file a CR (and if you prefer i can submit a simple patch).
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