JDK-8143557 : Release Note: JFR reports abnormally high machine CPU consumption on Linux
- Type: Sub-task
- Component: hotspot
- Sub-Component: jfr
- Affected Version: 7u95,8u72,9
- Priority: P4
- Status: Closed
- Resolution: Delivered
- Submitted: 2015-11-20
- Updated: 2022-06-14
- Resolved: 2017-04-20
The Version table provides details related to the release that this issue/RFE will be addressed.
Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.
To download the current JDK release, click here.
Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.
To download the current JDK release, click here.
| JDK 7 | JDK 8 |
|---|---|
| 7u95Resolved | 8u72Resolved  |
Description
On Linux kernels 2.6 and later, the JDK would include time spent waiting for IO completion as "CPU usage". During periods of heavy IO activity, this could result in misleadingly high values reported as CPU consumption in various tools like Flight Recorder and performance counters. This issue has been resolved.
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