JDK-8292592 : JFR test TestNative is not reliable due to low rate of sampling.
  • Type: Bug
  • Component: hotspot
  • Sub-Component: jfr
  • Affected Version: 20
  • Priority: P5
  • Status: Resolved
  • Resolution: Fixed
  • Submitted: 2022-08-18
  • Updated: 2022-08-19
  • Resolved: 2022-08-19
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JDK 20
20 masterFixed
Related Reports
Blocks :  
JDK-8292591 - Experimentally add back barrier-less Java thread transitions
Relates :  
JDK-8288846 - misc tests fail "assert(ms < 1000) failed: Un-interruptable sleep, short time use only"
Relates :  
JDK-8237574 - Make TestNative work without -nativepath
Description
When testing 8292591, which changes the timing of transitions and the sampler verification, it exposed an issue with TestNative.

The stable version of the test was changed to used a more by chance approach in "8237574: Make TestNative work without -nativepath".
And later a test for 8288846 was baked into this existing test and the sampling was increased to a very large interval.

When running with 8292591 it take a very long time before we get luck.
Comments
Changeset: 45dec480 Author: Robbin Ehn <rehn@openjdk.org> Date: 2022-08-19 16:05:08 +0000 URL: https://git.openjdk.org/jdk/commit/45dec480ef6f1d5509f4afbbf414c69584ac252e
19-08-2022
A pull request was submitted for review. URL: https://git.openjdk.org/jdk/pull/9915 Date: 2022-08-18 10:51:57 +0000
18-08-2022