MacOs aarch64: JFR: Thread method sampler crashed #863
Description
CI on GitHub actions which is an important bit of information as the GHA MacOs aarch64 is virtualized and GitHub customized, caught an error log line with a rudimentary non-Quarkus test app and native-image JFR:
[error][jfr ] Thread method sampler crashed
I haven't tried to reproduce it on our baremetal yet.
Full log:
native-image --enable-monitoring=jfr -jar target/debug-symbols-smoke.jar target/debug-symbols-smoke
Command: native-image --enable-monitoring=jfr -jar target/debug-symbols-smoke.jar target/debug-symbols-smoke
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GraalVM Native Image: Generating 'debug-symbols-smoke' (executable)...
========================================================================================================================
For detailed information and explanations on the build output, visit:
https://github.com/oracle/graal/blob/master/docs/reference-manual/native-image/BuildOutput.md
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[1/8] Initializing... (5.6s @ 0.10GB)
Java version: 24+36, vendor version: Mandrel-24.2.0.0-Final
Graal compiler: optimization level: 2, target machine: armv8.1-a
C compiler: cc (apple, arm64, 16.0.0)
Garbage collector: Serial GC (max heap size: 80% of RAM)
1 user-specific feature(s):
- com.oracle.svm.thirdparty.gson.GsonFeature
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Build resources:
- 5.29GB of memory (75.6% of 7.00GB system memory, determined at start)
- 3 thread(s) (100.0% of 3 available processor(s), determined at start)
[2/8] Performing analysis... [****] (25.1s @ 0.43GB)
4,677 reachable types (76.5% of 6,110 total)
5,590 reachable fields (45.4% of 12,317 total)
21,651 reachable methods (48.8% of 44,332 total)
1,475 types, 13 fields, and 300 methods registered for reflection
58 types, 58 fields, and 52 methods registered for JNI access
5 native libraries: -framework Foundation, dl, m, pthread, z
[3/8] Building universe... (3.7s @ 0.46GB)
[4/8] Parsing methods... [**] (3.0s @ 0.52GB)
[5/8] Inlining methods... [***] (3.5s @ 0.55GB)
[6/8] Compiling methods... [*****] (25.9s @ 0.73GB)
[7/8] Laying out methods... [**] (2.4s @ 0.47GB)
[8/8] Creating image... [**] (2.5s @ 0.54GB)
7.61MB (38.15%) for code area: 12,591 compilation units
11.88MB (59.52%) for image heap: 162,751 objects and 55 resources
475.31kB ( 2.33%) for other data
19.95MB in total
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Top 10 origins of code area: Top 10 object types in image heap:
5.24MB java.base 2.22MB byte[] for java.lang.String
1.25MB svm.jar (Native Image) 2.15MB byte[] for code metadata
689.73kB jdk.jfr 1.52MB java.lang.String
101.20kB java.logging 1.12MB java.lang.Class
96.79kB jdk.proxy1 438.47kB com.oracle.svm.core.hub.DynamicHubCompanion
66.61kB org.graalvm.nativeimage.base 320.66kB java.lang.Object[]
47.36kB jdk.proxy2 311.91kB java.util.HashMap$Node
20.41kB org.graalvm.collections 309.54kB java.lang.String[]
18.84kB jdk.internal.vm.ci 291.17kB byte[] for general heap data
11.63kB jdk.proxy3 216.43kB byte[] for reflection metadata
16.69kB for 6 more packages 3.02MB for 1256 more object types
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Recommendations:
HEAP: Set max heap for improved and more predictable memory usage.
CPU: Enable more CPU features with '-march=native' for improved performance.
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7.0s (9.4% of total time) in 364 GCs | Peak RSS: 1.15GB | CPU load: 2.12
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Build artifacts:
/Users/runner/work/mandrel-integration-tests/mandrel-integration-tests/ts/apps/debug-symbols-smoke/target/debug-symbols-smoke (executable)
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Finished generating 'debug-symbols-smoke' in 1m 13s.
Command: java -jar ./target/debug-symbols-smoke.jar
Q to quit
b6951775b0375ea13fc977581e54eb36d483e95ed3bc1e62fcb8da59830f1ef9
Command: java -XX:StartFlightRecording=filename=logs/flight-java.jfr -Xlog:jfr -jar ./target/debug-symbols-smoke.jar
[0.189s][info][jfr] Flight Recorder initialized
[0.189s][info][jfr] Repository base directory: /var/folders/x7/ch5v91h56_zbvbd1y2f600dm0000gn/T
[0.208s][info][jfr] Started recording "1" (1) {dumponexit=true, filename=/Users/runner/work/mandrel-integration-tests/mandrel-integration-tests/ts/apps/debug-symbols-smoke/logs/flight-java.jfr}
[0.208s][info][jfr,startup] Started recording 1. No limit specified, using maxsize=250MB as default.
[0.208s][info][jfr,startup]
[0.208s][info][jfr,startup] Use jcmd 3572 JFR.dump name=1 to copy recording data to file.
Q to quit
[1.484s][error][jfr ] Thread method sampler crashed
b6951775b0375ea13fc977581e54eb36d483e95ed3bc1e62fcb8da59830f1ef9
[1.798s][info ][jfr ] Stopped recording "1" (1). Reason "Dump on exit".
[1.812s][info ][jfr ] Transferred 433991 bytes from the disk repository
[1.818s][info ][jfr ] Wrote recording "1" (1) to /Users/runner/work/mandrel-integration-tests/mandrel-integration-tests/ts/apps/debug-symbols-smoke/logs/flight-java.jfr
[1.819s][info ][jfr ] Closed recording "1" (1)
[1.820s][info ][jfr ] Removed repository /private/var/folders/x7/ch5v91h56_zbvbd1y2f600dm0000gn/T/2025_07_18_08_18_22_3572
Command: ./target/debug-symbols-smoke
Q to quit
b6951775b0375ea13fc977581e54eb36d483e95ed3bc1e62fcb8da59830f1ef9
Command: ./target/debug-symbols-smoke -XX:+FlightRecorder -XX:StartFlightRecording=filename=logs/flight-native.jfr -XX:FlightRecorderLogging=jfr
[info][jfr] Added periodic task for EveryChunkPeriodEvents(10575)
[info][jfr] Added periodic task for EndChunkPeriodEvents(10580)
[info][jfr] Flight Recorder initialized
[info][jfr] Repository base directory: /var/folders/x7/ch5v91h56_zbvbd1y2f600dm0000gn/T
[info][jfr] Started recording "1" (1) {dumponexit=true, filename=/Users/runner/work/mandrel-integration-tests/mandrel-integration-tests/ts/apps/debug-symbols-smoke/logs/flight-native.jfr}
Q to quit
b6951775b0375ea13fc977581e54eb36d483e95ed3bc1e62fcb8da59830f1ef9
[info][jfr] Stopped recording "1" (1). Reason "Dump on exit".
[info][jfr] Transferred 221713 bytes from the disk repository
[info][jfr] Wrote recording "1" (1) to /Users/runner/work/mandrel-integration-tests/mandrel-integration-tests/ts/apps/debug-symbols-smoke/logs/flight-native.jfr
[info][jfr] Closed recording "1" (1)
[info][jfr] Removed repository /private/var/folders/x7/ch5v91h56_zbvbd1y2f600dm0000gn/T/2025_07_18_08_18_29_3609