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Bug
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Resolution: Fixed
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P3
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9, 10, 11, 12, 13
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b03
| Issue | Fix Version | Assignee | Priority | Status | Resolution | Resolved In Build |
|---|---|---|---|---|---|---|
| JDK-8219308 | 12.0.2 | Matthias Baesken | P3 | Resolved | Fixed | b01 |
| JDK-8219727 | 12.0.1 | Matthias Baesken | P3 | Resolved | Fixed | b09 |
| JDK-8231773 | 11.0.6-oracle | Matthias Baesken | P3 | Resolved | Fixed | b01 |
| JDK-8217494 | 11.0.3 | Matthias Baesken | P3 | Resolved | Fixed | master |
Currently, when ThreadPriorityPolicy is set to 1 (so called Aggressive mode), on linux and bsd(+Mac) a root-user-check (geteuid() != 0)) is done.
See for example the coding in jdk/src/hotspot/os/linux/os_linux.cpp int prio_init().
However the root-user-check has a few drawbacks:
- it blocks the capabilities feature available on current Linux distros (CAP_SYS_NICE capability) that can be used to allow setting lower niceness also for non-root
- setting a higher "niceness" (lower priority) is not possible on Linux for non-root because of the geteuid check
See for example the coding in jdk/src/hotspot/os/linux/os_linux.cpp int prio_init().
However the root-user-check has a few drawbacks:
- it blocks the capabilities feature available on current Linux distros (CAP_SYS_NICE capability) that can be used to allow setting lower niceness also for non-root
- setting a higher "niceness" (lower priority) is not possible on Linux for non-root because of the geteuid check
- backported by
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JDK-8217494 Support ThreadPriorityPolicy mode 1 for non-root users on linux/bsd
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- Resolved
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- Resolved
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- Resolved
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- Resolved
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