[jdk21u-dev] RFR: 8317809: Insertion of free code blobs into code cache can be very slow during class unloading

[Goetz Lindenmaier]

On Tue, 16 Apr 2024 09:47:42 GMT, Goetz Lindenmaier <goetz at openjdk.org> wrote:

> Big change, but only two resolves needed:
> 
> src/hotspot/share/gc/g1/g1ConcurrentMark.cpp
> The context differs because "8309538: G1: Move total collection increment from Cleanup to Remark"
> is only in 22
> 
> src/hotspot/share/gc/serial/genMarkSweep.cpp
> Resolved adding an #include.
> 
> SAP nightly testing passed.

GHA failure: x86 (32-bit) test failure in gc/g1/humongousObjects/TestHumongousClassLoader.java

2024-04-16T11:19:19.7475339Z Loading class TwoRegionHumongousClass
2024-04-16T11:19:19.7475888Z #
2024-04-16T11:19:19.7476442Z # A fatal error has been detected by the Java Runtime Environment:
2024-04-16T11:19:19.7477171Z #
2024-04-16T11:19:19.7477620Z #  SIGSEGV (0xb) at pc=0xe94303d7, pid=17327, tid=17350
2024-04-16T11:19:19.7478227Z #
2024-04-16T11:19:19.7479030Z # JRE version: OpenJDK Runtime Environment (21.0.4) (fastdebug build 21.0.4-internal-GoeLin-8a29893d2c8ecee5209cbddc90317fe74ca810fd)
2024-04-16T11:19:19.7480380Z # Java VM: OpenJDK Server VM (fastdebug 21.0.4-internal-GoeLin-8a29893d2c8ecee5209cbddc90317fe74ca810fd, mixed mode, sharing, tiered, g1 gc, linux-x86)
2024-04-16T11:19:19.7481197Z # Problematic frame:
2024-04-16T11:19:19.7493177Z # V  [libjvm.so+0x2303d7]  oopDesc::size_given_klass(Klass*)+0x17
2024-04-16T11:19:19.7493635Z #
2024-04-16T11:19:19.7493927Z # CreateCoredumpOnCrash turned off, no core file dumped
2024-04-16T11:19:19.7494317Z #
2024-04-16T11:19:19.7494585Z Unsupported internal testing APIs have been used.
2024-04-16T11:19:19.7494877Z 
2024-04-16T11:19:19.7495063Z # An error report file with more information is saved as:
2024-04-16T11:19:19.7496084Z # /home/runner/work/jdk21u-dev/jdk21u-dev/build/run-test-prebuilt/test-support/jtreg_test_hotspot_jtreg_tier1_gc/scratch/1/hs_err_pid17327.log
2024-04-16T11:19:19.7496854Z #
2024-04-16T11:19:19.7497143Z # If you would like to submit a bug report, please visit:
2024-04-16T11:19:19.7497615Z #   https://bugreport.java.com/bugreport/crash.jsp

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PR Comment: https://git.openjdk.org/jdk21u-dev/pull/505#issuecomment-2063524459