Add J9/OpenJ9 crash tracking support by jbachorik · Pull Request #10496 · DataDog/dd-trace-java

jbachorik · 2026-02-02T15:47:41Z

What Does This Do

Adds crash tracking support for J9/OpenJ9 JVMs (IBM Semeru, Eclipse OpenJ9). This includes:

New J9JavacoreParser to parse J9 javacore dump files
Auto-detection of crash log format (HotSpot hs_err vs J9 javacore)
Updated shell scripts to find and upload J9 javacore files
J9-specific initialization path in Initializer.java
Support for custom javacore file paths via -Xdump:java:file=

Motivation

Previously, crash tracking only supported HotSpot-based JVMs. J9/OpenJ9 JVMs use a different crash dump format (javacore files) and require manual configuration of -Xdump:tool since this cannot be set at runtime. This PR extends crash tracking to support J9/OpenJ9, enabling crash reporting for users running on IBM Semeru or Eclipse OpenJ9.

Additional Notes

J9 crash tracking requires manual JVM argument configuration at startup (-Xdump:tool:events=gpf+abort,exec=...)
The agent logs instructions for manual setup when J9 is detected without proper configuration
Documentation added at dd-java-agent/agent-crashtracking/doc/manual-crash-tracking-setup.md

Contributor Checklist

Format the title according the contribution guidelines
Assign the type: and (comp: or inst:) labels in addition to any useful labels
Don't use close, fix or any linking keywords when referencing an issue.
Use solves instead, and assign the PR milestone to the issue
Update the CODEOWNERS file on source file addition, move, or deletion
Update the public documentation in case of new configuration flag or behavior

Jira ticket: [PROF-XXXX]

🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

pr-commenter · 2026-02-02T15:59:52Z

Benchmarks

Startup

Parameters

	Baseline	Candidate
baseline_or_candidate	baseline	candidate
git_branch	master	jb/j9_crash_report
git_commit_date	1770299006	1770302462
git_commit_sha	`6fdb8c8`	`1f3186f`
release_version	1.60.0-SNAPSHOT~6fdb8c86a8	1.59.0-SNAPSHOT~1f3186fc66

See matching parameters

	Baseline	Candidate
application	insecure-bank	insecure-bank
ci_job_date	1770304171	1770304171
ci_job_id	1404103638	1404103638
ci_pipeline_id	94877089	94877089
cpu_model	Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz
kernel_version	Linux runner-zfyrx7zua-project-304-concurrent-1-wqg9rs96 6.8.0-1031-aws #33~22.04.1-Ubuntu SMP Thu Jun 26 14:22:30 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux	Linux runner-zfyrx7zua-project-304-concurrent-1-wqg9rs96 6.8.0-1031-aws #33~22.04.1-Ubuntu SMP Thu Jun 26 14:22:30 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux
module	Agent	Agent
parent	None	None

Summary

Found 0 performance improvements and 0 performance regressions! Performance is the same for 64 metrics, 7 unstable metrics.

Startup time reports for petclinic

gantt
    title petclinic - global startup overhead: candidate=1.59.0-SNAPSHOT~1f3186fc66, baseline=1.60.0-SNAPSHOT~6fdb8c86a8

    dateFormat X
    axisFormat %s
section tracing
Agent [baseline] (1.064 s) : 0, 1063524
Total [baseline] (10.788 s) : 0, 10788227
Agent [candidate] (1.075 s) : 0, 1074951
Total [candidate] (10.88 s) : 0, 10879789
section appsec
Agent [baseline] (1.238 s) : 0, 1238138
Total [baseline] (10.913 s) : 0, 10913120
Agent [candidate] (1.246 s) : 0, 1246386
Total [candidate] (11.04 s) : 0, 11039579
section iast
Agent [baseline] (1.23 s) : 0, 1229516
Total [baseline] (11.2 s) : 0, 11200156
Agent [candidate] (1.229 s) : 0, 1228871
Total [candidate] (11.162 s) : 0, 11162321
section profiling
Agent [baseline] (1.198 s) : 0, 1198144
Total [baseline] (11.017 s) : 0, 11016806
Agent [candidate] (1.192 s) : 0, 1192345
Total [candidate] (10.979 s) : 0, 10979111

baseline results

Module	Variant	Duration	Δ tracing
Agent	tracing	1.064 s	-
Agent	appsec	1.238 s	174.614 ms (16.4%)
Agent	iast	1.23 s	165.992 ms (15.6%)
Agent	profiling	1.198 s	134.62 ms (12.7%)
Total	tracing	10.788 s	-
Total	appsec	10.913 s	124.894 ms (1.2%)
Total	iast	11.2 s	411.929 ms (3.8%)
Total	profiling	11.017 s	228.579 ms (2.1%)

candidate results

Module	Variant	Duration	Δ tracing
Agent	tracing	1.075 s	-
Agent	appsec	1.246 s	171.435 ms (15.9%)
Agent	iast	1.229 s	153.92 ms (14.3%)
Agent	profiling	1.192 s	117.394 ms (10.9%)
Total	tracing	10.88 s	-
Total	appsec	11.04 s	159.789 ms (1.5%)
Total	iast	11.162 s	282.532 ms (2.6%)
Total	profiling	10.979 s	99.322 ms (0.9%)

gantt
    title petclinic - break down per module: candidate=1.59.0-SNAPSHOT~1f3186fc66, baseline=1.60.0-SNAPSHOT~6fdb8c86a8

    dateFormat X
    axisFormat %s
section tracing
crashtracking [baseline] (1.178 ms) : 0, 1178
crashtracking [candidate] (1.19 ms) : 0, 1190
BytebuddyAgent [baseline] (627.955 ms) : 0, 627955
BytebuddyAgent [candidate] (634.796 ms) : 0, 634796
AgentMeter [baseline] (28.821 ms) : 0, 28821
AgentMeter [candidate] (29.132 ms) : 0, 29132
GlobalTracer [baseline] (257.404 ms) : 0, 257404
GlobalTracer [candidate] (259.59 ms) : 0, 259590
AppSec [baseline] (32.809 ms) : 0, 32809
AppSec [candidate] (33.168 ms) : 0, 33168
Debugger [baseline] (61.849 ms) : 0, 61849
Debugger [candidate] (65.513 ms) : 0, 65513
Remote Config [baseline] (613.474 µs) : 0, 613
Remote Config [candidate] (619.214 µs) : 0, 619
Telemetry [baseline] (11.42 ms) : 0, 11420
Telemetry [candidate] (10.756 ms) : 0, 10756
Flare Poller [baseline] (6.16 ms) : 0, 6160
Flare Poller [candidate] (4.639 ms) : 0, 4639
section appsec
crashtracking [baseline] (1.179 ms) : 0, 1179
crashtracking [candidate] (1.208 ms) : 0, 1208
BytebuddyAgent [baseline] (657.579 ms) : 0, 657579
BytebuddyAgent [candidate] (663.038 ms) : 0, 663038
AgentMeter [baseline] (11.894 ms) : 0, 11894
AgentMeter [candidate] (11.947 ms) : 0, 11947
GlobalTracer [baseline] (258.651 ms) : 0, 258651
GlobalTracer [candidate] (260.262 ms) : 0, 260262
IAST [baseline] (25.21 ms) : 0, 25210
IAST [candidate] (25.344 ms) : 0, 25344
AppSec [baseline] (167.752 ms) : 0, 167752
AppSec [candidate] (168.497 ms) : 0, 168497
Debugger [baseline] (67.208 ms) : 0, 67208
Debugger [candidate] (67.16 ms) : 0, 67160
Remote Config [baseline] (676.112 µs) : 0, 676
Remote Config [candidate] (664.759 µs) : 0, 665
Telemetry [baseline] (9.13 ms) : 0, 9130
Telemetry [candidate] (9.211 ms) : 0, 9211
Flare Poller [baseline] (3.624 ms) : 0, 3624
Flare Poller [candidate] (3.582 ms) : 0, 3582
section iast
crashtracking [baseline] (1.176 ms) : 0, 1176
crashtracking [candidate] (1.179 ms) : 0, 1179
BytebuddyAgent [baseline] (795.099 ms) : 0, 795099
BytebuddyAgent [candidate] (794.089 ms) : 0, 794089
AgentMeter [baseline] (11.235 ms) : 0, 11235
AgentMeter [candidate] (11.227 ms) : 0, 11227
GlobalTracer [baseline] (247.422 ms) : 0, 247422
GlobalTracer [candidate] (247.379 ms) : 0, 247379
IAST [baseline] (26.95 ms) : 0, 26950
IAST [candidate] (26.95 ms) : 0, 26950
AppSec [baseline] (33.804 ms) : 0, 33804
AppSec [candidate] (34.513 ms) : 0, 34513
Debugger [baseline] (65.816 ms) : 0, 65816
Debugger [candidate] (65.792 ms) : 0, 65792
Remote Config [baseline] (542.053 µs) : 0, 542
Remote Config [candidate] (538.372 µs) : 0, 538
Telemetry [baseline] (8.751 ms) : 0, 8751
Telemetry [candidate] (8.641 ms) : 0, 8641
Flare Poller [baseline] (3.482 ms) : 0, 3482
Flare Poller [candidate] (3.433 ms) : 0, 3433
section profiling
crashtracking [baseline] (1.226 ms) : 0, 1226
crashtracking [candidate] (1.206 ms) : 0, 1206
BytebuddyAgent [baseline] (687.646 ms) : 0, 687646
BytebuddyAgent [candidate] (682.394 ms) : 0, 682394
AgentMeter [baseline] (8.85 ms) : 0, 8850
AgentMeter [candidate] (8.815 ms) : 0, 8815
GlobalTracer [baseline] (216.776 ms) : 0, 216776
GlobalTracer [candidate] (217.337 ms) : 0, 217337
AppSec [baseline] (32.601 ms) : 0, 32601
AppSec [candidate] (32.882 ms) : 0, 32882
Debugger [baseline] (67.645 ms) : 0, 67645
Debugger [candidate] (67.55 ms) : 0, 67550
Remote Config [baseline] (602.919 µs) : 0, 603
Remote Config [candidate] (605.617 µs) : 0, 606
Telemetry [baseline] (8.888 ms) : 0, 8888
Telemetry [candidate] (8.944 ms) : 0, 8944
Flare Poller [baseline] (3.788 ms) : 0, 3788
Flare Poller [candidate] (3.792 ms) : 0, 3792
ProfilingAgent [baseline] (99.82 ms) : 0, 99820
ProfilingAgent [candidate] (99.005 ms) : 0, 99005
Profiling [baseline] (100.408 ms) : 0, 100408
Profiling [candidate] (99.585 ms) : 0, 99585

Startup time reports for insecure-bank

gantt
    title insecure-bank - global startup overhead: candidate=1.59.0-SNAPSHOT~1f3186fc66, baseline=1.60.0-SNAPSHOT~6fdb8c86a8

    dateFormat X
    axisFormat %s
section tracing
Agent [baseline] (1.073 s) : 0, 1073233
Total [baseline] (8.749 s) : 0, 8748827
Agent [candidate] (1.063 s) : 0, 1062929
Total [candidate] (8.732 s) : 0, 8732158
section iast
Agent [baseline] (1.231 s) : 0, 1230905
Total [baseline] (9.329 s) : 0, 9328560
Agent [candidate] (1.242 s) : 0, 1241705
Total [candidate] (9.35 s) : 0, 9350147

baseline results

Module	Variant	Duration	Δ tracing
Agent	tracing	1.073 s	-
Agent	iast	1.231 s	157.672 ms (14.7%)
Total	tracing	8.749 s	-
Total	iast	9.329 s	579.734 ms (6.6%)

candidate results

Module	Variant	Duration	Δ tracing
Agent	tracing	1.063 s	-
Agent	iast	1.242 s	178.776 ms (16.8%)
Total	tracing	8.732 s	-
Total	iast	9.35 s	617.989 ms (7.1%)

gantt
    title insecure-bank - break down per module: candidate=1.59.0-SNAPSHOT~1f3186fc66, baseline=1.60.0-SNAPSHOT~6fdb8c86a8

    dateFormat X
    axisFormat %s
section tracing
crashtracking [baseline] (1.206 ms) : 0, 1206
crashtracking [candidate] (1.18 ms) : 0, 1180
BytebuddyAgent [baseline] (634.653 ms) : 0, 634653
BytebuddyAgent [candidate] (628.709 ms) : 0, 628709
AgentMeter [baseline] (29.037 ms) : 0, 29037
AgentMeter [candidate] (28.922 ms) : 0, 28922
GlobalTracer [baseline] (259.224 ms) : 0, 259224
GlobalTracer [candidate] (258.062 ms) : 0, 258062
AppSec [baseline] (33.21 ms) : 0, 33210
AppSec [candidate] (32.764 ms) : 0, 32764
Debugger [baseline] (61.065 ms) : 0, 61065
Debugger [candidate] (62.757 ms) : 0, 62757
Remote Config [baseline] (635.271 µs) : 0, 635
Remote Config [candidate] (610.964 µs) : 0, 611
Telemetry [baseline] (13.985 ms) : 0, 13985
Telemetry [candidate] (9.174 ms) : 0, 9174
Flare Poller [baseline] (4.619 ms) : 0, 4619
Flare Poller [candidate] (5.378 ms) : 0, 5378
section iast
crashtracking [baseline] (1.183 ms) : 0, 1183
crashtracking [candidate] (1.197 ms) : 0, 1197
BytebuddyAgent [baseline] (795.815 ms) : 0, 795815
BytebuddyAgent [candidate] (804.881 ms) : 0, 804881
AgentMeter [baseline] (11.274 ms) : 0, 11274
AgentMeter [candidate] (11.518 ms) : 0, 11518
GlobalTracer [baseline] (247.862 ms) : 0, 247862
GlobalTracer [candidate] (248.932 ms) : 0, 248932
IAST [baseline] (26.972 ms) : 0, 26972
IAST [candidate] (27.081 ms) : 0, 27081
AppSec [baseline] (34.113 ms) : 0, 34113
AppSec [candidate] (35.018 ms) : 0, 35018
Debugger [baseline] (65.821 ms) : 0, 65821
Debugger [candidate] (64.993 ms) : 0, 64993
Remote Config [baseline] (544.141 µs) : 0, 544
Remote Config [candidate] (536.132 µs) : 0, 536
Telemetry [baseline] (8.643 ms) : 0, 8643
Telemetry [candidate] (8.61 ms) : 0, 8610
Flare Poller [baseline] (3.468 ms) : 0, 3468
Flare Poller [candidate] (3.455 ms) : 0, 3455

Load

Parameters

	Baseline	Candidate
baseline_or_candidate	baseline	candidate
git_branch	master	jb/j9_crash_report
git_commit_date	1770299006	1770302462
git_commit_sha	`6fdb8c8`	`1f3186f`
release_version	1.60.0-SNAPSHOT~6fdb8c86a8	1.59.0-SNAPSHOT~1f3186fc66

See matching parameters

	Baseline	Candidate
application	insecure-bank	insecure-bank
ci_job_date	1770304655	1770304655
ci_job_id	1404103639	1404103639
ci_pipeline_id	94877089	94877089
cpu_model	Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz
kernel_version	Linux runner-zfyrx7zua-project-304-concurrent-0-qmngoltj 6.8.0-1031-aws #33~22.04.1-Ubuntu SMP Thu Jun 26 14:22:30 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux	Linux runner-zfyrx7zua-project-304-concurrent-0-qmngoltj 6.8.0-1031-aws #33~22.04.1-Ubuntu SMP Thu Jun 26 14:22:30 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux

Summary

Found 0 performance improvements and 2 performance regressions! Performance is the same for 17 metrics, 17 unstable metrics.

scenario	Δ mean agg_http_req_duration_p50	Δ mean agg_http_req_duration_p95	Δ mean throughput	candidate mean agg_http_req_duration_p50	candidate mean agg_http_req_duration_p95	candidate mean throughput	baseline mean agg_http_req_duration_p50	baseline mean agg_http_req_duration_p95	baseline mean throughput
scenario:load:insecure-bank:profiling:high_load	worse [+75.202µs; +212.906µs] or [+4.542%; +12.858%]	unstable [+402.855µs; +1326.070µs] or [+8.441%; +27.786%]	unstable [-571.957op/s; -28.981op/s] or [-25.737%; -1.304%]	1.800ms	5.637ms	1921.875op/s	1.656ms	4.772ms	2222.344op/s
scenario:load:petclinic:code_origins:high_load	worse [+0.513ms; +1.638ms] or [+2.928%; +9.345%]	unsure [+0.269ms; +2.513ms] or [+0.936%; +8.743%]	unstable [-42.954op/s; +11.329op/s] or [-16.475%; +4.345%]	18.609ms	30.129ms	244.906op/s	17.533ms	28.738ms	260.719op/s

Request duration reports for insecure-bank

gantt
    title insecure-bank - request duration [CI 0.99] : candidate=1.59.0-SNAPSHOT~1f3186fc66, baseline=1.60.0-SNAPSHOT~6fdb8c86a8
    dateFormat X
    axisFormat %s
section baseline
no_agent (1.175 ms) : 1163, 1186
.   : milestone, 1175,
iast (3.11 ms) : 3069, 3150
.   : milestone, 3110,
iast_FULL (5.597 ms) : 5541, 5652
.   : milestone, 5597,
iast_GLOBAL (3.502 ms) : 3443, 3562
.   : milestone, 3502,
profiling (2.032 ms) : 2014, 2049
.   : milestone, 2032,
tracing (1.805 ms) : 1790, 1819
.   : milestone, 1805,
section candidate
no_agent (1.179 ms) : 1167, 1191
.   : milestone, 1179,
iast (3.158 ms) : 3114, 3201
.   : milestone, 3158,
iast_FULL (5.862 ms) : 5803, 5922
.   : milestone, 5862,
iast_GLOBAL (3.459 ms) : 3410, 3508
.   : milestone, 3459,
profiling (2.361 ms) : 2338, 2385
.   : milestone, 2361,
tracing (1.765 ms) : 1751, 1779
.   : milestone, 1765,

baseline results

Variant	Request duration [CI 0.99]	Δ no_agent
no_agent	1.175 ms [1.163 ms, 1.186 ms]	-
iast	3.11 ms [3.069 ms, 3.15 ms]	1.935 ms (164.7%)
iast_FULL	5.597 ms [5.541 ms, 5.652 ms]	4.422 ms (376.4%)
iast_GLOBAL	3.502 ms [3.443 ms, 3.562 ms]	2.327 ms (198.1%)
profiling	2.032 ms [2.014 ms, 2.049 ms]	856.936 µs (72.9%)
tracing	1.805 ms [1.79 ms, 1.819 ms]	629.668 µs (53.6%)

candidate results

Variant	Request duration [CI 0.99]	Δ no_agent
no_agent	1.179 ms [1.167 ms, 1.191 ms]	-
iast	3.158 ms [3.114 ms, 3.201 ms]	1.978 ms (167.8%)
iast_FULL	5.862 ms [5.803 ms, 5.922 ms]	4.683 ms (397.2%)
iast_GLOBAL	3.459 ms [3.41 ms, 3.508 ms]	2.28 ms (193.4%)
profiling	2.361 ms [2.338 ms, 2.385 ms]	1.182 ms (100.3%)
tracing	1.765 ms [1.751 ms, 1.779 ms]	585.882 µs (49.7%)

Request duration reports for petclinic

gantt
    title petclinic - request duration [CI 0.99] : candidate=1.59.0-SNAPSHOT~1f3186fc66, baseline=1.60.0-SNAPSHOT~6fdb8c86a8
    dateFormat X
    axisFormat %s
section baseline
no_agent (17.913 ms) : 17730, 18096
.   : milestone, 17913,
appsec (18.534 ms) : 18346, 18723
.   : milestone, 18534,
code_origins (17.9 ms) : 17725, 18076
.   : milestone, 17900,
iast (17.686 ms) : 17507, 17865
.   : milestone, 17686,
profiling (18.734 ms) : 18549, 18920
.   : milestone, 18734,
tracing (17.659 ms) : 17483, 17835
.   : milestone, 17659,
section candidate
no_agent (17.941 ms) : 17760, 18122
.   : milestone, 17941,
appsec (18.3 ms) : 18114, 18486
.   : milestone, 18300,
code_origins (19.063 ms) : 18866, 19260
.   : milestone, 19063,
iast (17.605 ms) : 17427, 17783
.   : milestone, 17605,
profiling (19.068 ms) : 18877, 19260
.   : milestone, 19068,
tracing (17.649 ms) : 17474, 17824
.   : milestone, 17649,

baseline results

Variant	Request duration [CI 0.99]	Δ no_agent
no_agent	17.913 ms [17.73 ms, 18.096 ms]	-
appsec	18.534 ms [18.346 ms, 18.723 ms]	621.805 µs (3.5%)
code_origins	17.9 ms [17.725 ms, 18.076 ms]	-12.314 µs (-0.1%)
iast	17.686 ms [17.507 ms, 17.865 ms]	-226.321 µs (-1.3%)
profiling	18.734 ms [18.549 ms, 18.92 ms]	821.681 µs (4.6%)
tracing	17.659 ms [17.483 ms, 17.835 ms]	-253.196 µs (-1.4%)

candidate results

Variant	Request duration [CI 0.99]	Δ no_agent
no_agent	17.941 ms [17.76 ms, 18.122 ms]	-
appsec	18.3 ms [18.114 ms, 18.486 ms]	358.708 µs (2.0%)
code_origins	19.063 ms [18.866 ms, 19.26 ms]	1.122 ms (6.3%)
iast	17.605 ms [17.427 ms, 17.783 ms]	-336.228 µs (-1.9%)
profiling	19.068 ms [18.877 ms, 19.26 ms]	1.127 ms (6.3%)
tracing	17.649 ms [17.474 ms, 17.824 ms]	-292.262 µs (-1.6%)

Dacapo

Parameters

	Baseline	Candidate
baseline_or_candidate	baseline	candidate
git_branch	master	jb/j9_crash_report
git_commit_date	1770299006	1770302462
git_commit_sha	`6fdb8c8`	`1f3186f`
release_version	1.60.0-SNAPSHOT~6fdb8c86a8	1.59.0-SNAPSHOT~1f3186fc66

See matching parameters

	Baseline	Candidate
application	biojava	biojava
ci_job_date	1770304450	1770304450
ci_job_id	1404103640	1404103640
ci_pipeline_id	94877089	94877089
cpu_model	Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz	Intel(R) Xeon(R) Platinum 8259CL CPU @ 2.50GHz
kernel_version	Linux runner-zfyrx7zua-project-304-concurrent-0-s24zmecj 6.8.0-1031-aws #33~22.04.1-Ubuntu SMP Thu Jun 26 14:22:30 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux	Linux runner-zfyrx7zua-project-304-concurrent-0-s24zmecj 6.8.0-1031-aws #33~22.04.1-Ubuntu SMP Thu Jun 26 14:22:30 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux

Summary

Found 0 performance improvements and 0 performance regressions! Performance is the same for 12 metrics, 0 unstable metrics.

Execution time for biojava

gantt
    title biojava - execution time [CI 0.99] : candidate=1.59.0-SNAPSHOT~1f3186fc66, baseline=1.60.0-SNAPSHOT~6fdb8c86a8
    dateFormat X
    axisFormat %s
section baseline
no_agent (15.084 s) : 15084000, 15084000
.   : milestone, 15084000,
appsec (15.129 s) : 15129000, 15129000
.   : milestone, 15129000,
iast (17.985 s) : 17985000, 17985000
.   : milestone, 17985000,
iast_GLOBAL (17.885 s) : 17885000, 17885000
.   : milestone, 17885000,
profiling (14.809 s) : 14809000, 14809000
.   : milestone, 14809000,
tracing (14.775 s) : 14775000, 14775000
.   : milestone, 14775000,
section candidate
no_agent (14.752 s) : 14752000, 14752000
.   : milestone, 14752000,
appsec (14.808 s) : 14808000, 14808000
.   : milestone, 14808000,
iast (18.217 s) : 18217000, 18217000
.   : milestone, 18217000,
iast_GLOBAL (17.896 s) : 17896000, 17896000
.   : milestone, 17896000,
profiling (15.073 s) : 15073000, 15073000
.   : milestone, 15073000,
tracing (14.729 s) : 14729000, 14729000
.   : milestone, 14729000,

baseline results

Variant	Execution Time [CI 0.99]	Δ no_agent
no_agent	15.084 s [15.084 s, 15.084 s]	-
appsec	15.129 s [15.129 s, 15.129 s]	45.0 ms (0.3%)
iast	17.985 s [17.985 s, 17.985 s]	2.901 s (19.2%)
iast_GLOBAL	17.885 s [17.885 s, 17.885 s]	2.801 s (18.6%)
profiling	14.809 s [14.809 s, 14.809 s]	-275.0 ms (-1.8%)
tracing	14.775 s [14.775 s, 14.775 s]	-309.0 ms (-2.0%)

candidate results

Variant	Execution Time [CI 0.99]	Δ no_agent
no_agent	14.752 s [14.752 s, 14.752 s]	-
appsec	14.808 s [14.808 s, 14.808 s]	56.0 ms (0.4%)
iast	18.217 s [18.217 s, 18.217 s]	3.465 s (23.5%)
iast_GLOBAL	17.896 s [17.896 s, 17.896 s]	3.144 s (21.3%)
profiling	15.073 s [15.073 s, 15.073 s]	321.0 ms (2.2%)
tracing	14.729 s [14.729 s, 14.729 s]	-23.0 ms (-0.2%)

Execution time for tomcat

gantt
    title tomcat - execution time [CI 0.99] : candidate=1.59.0-SNAPSHOT~1f3186fc66, baseline=1.60.0-SNAPSHOT~6fdb8c86a8
    dateFormat X
    axisFormat %s
section baseline
no_agent (1.484 ms) : 1472, 1496
.   : milestone, 1484,
appsec (2.529 ms) : 2473, 2584
.   : milestone, 2529,
iast (2.274 ms) : 2204, 2344
.   : milestone, 2274,
iast_GLOBAL (2.321 ms) : 2250, 2391
.   : milestone, 2321,
profiling (2.093 ms) : 2038, 2148
.   : milestone, 2093,
tracing (2.074 ms) : 2021, 2128
.   : milestone, 2074,
section candidate
no_agent (1.48 ms) : 1468, 1491
.   : milestone, 1480,
appsec (2.523 ms) : 2468, 2579
.   : milestone, 2523,
iast (2.277 ms) : 2206, 2347
.   : milestone, 2277,
iast_GLOBAL (2.315 ms) : 2245, 2386
.   : milestone, 2315,
profiling (2.119 ms) : 2062, 2176
.   : milestone, 2119,
tracing (2.096 ms) : 2041, 2150
.   : milestone, 2096,

baseline results

Variant	Execution Time [CI 0.99]	Δ no_agent
no_agent	1.484 ms [1.472 ms, 1.496 ms]	-
appsec	2.529 ms [2.473 ms, 2.584 ms]	1.045 ms (70.4%)
iast	2.274 ms [2.204 ms, 2.344 ms]	789.884 µs (53.2%)
iast_GLOBAL	2.321 ms [2.25 ms, 2.391 ms]	836.714 µs (56.4%)
profiling	2.093 ms [2.038 ms, 2.148 ms]	609.305 µs (41.1%)
tracing	2.074 ms [2.021 ms, 2.128 ms]	590.349 µs (39.8%)

candidate results

Variant	Execution Time [CI 0.99]	Δ no_agent
no_agent	1.48 ms [1.468 ms, 1.491 ms]	-
appsec	2.523 ms [2.468 ms, 2.579 ms]	1.044 ms (70.5%)
iast	2.277 ms [2.206 ms, 2.347 ms]	797.025 µs (53.9%)
iast_GLOBAL	2.315 ms [2.245 ms, 2.386 ms]	835.642 µs (56.5%)
profiling	2.119 ms [2.062 ms, 2.176 ms]	639.12 µs (43.2%)
tracing	2.096 ms [2.041 ms, 2.15 ms]	616.043 µs (41.6%)

Adapt J9JavacoreParser and tests to updated crash tracking DTOs: - SigInfo now requires 5 parameters (added code, action, address) - StackFrame now requires 7 parameters (added buildId, buildIdType, fileType, relativeAddress) - ProcInfo.pid changed from String to int - Test assertions updated for field rename (file -> path) 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Integrate BuildIdCollector into J9JavacoreParser to extract build IDs from native libraries in crash reports, matching HotspotCrashLogParser: - Added BuildIdCollector for async build ID extraction from ELF binaries - Modified parseNativeStackFrame() to collect library names from native frames - Enriched stack frames with build IDs, file types, and build ID types - Added 5-second timeout for build ID collection completion J9 javacores include native stack frames like [libcrash.so+0x1d7d] which now get enriched with GNU build IDs when available, improving crash symbolication and debugging capabilities. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Code review fixes: - Extract relative address from native stack frames ([lib+0xoffset]) - Add safe integer parsing for PID to handle malformed javacores Matches HotspotCrashLogParser patterns for consistency. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

- Remove obsolete comment about J9 handling from Agent.java - Separate J9 (javacore) and HotSpot (hs_err) config paths clearly - Update javadoc to reflect actual initialization order - Remove proactive script deployment when -Xdump not configured J9 VMs use javacore format exclusively, not hs_err, so config should only include javacore_path for J9 environments. 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Add J9/OpenJ9 crash tracking support

0ef0047

🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

jbachorik added type: enhancement Enhancements and improvements comp: profiling Profiling AI labels Feb 2, 2026

PerfectSlayer added tag: ai generated Largely based on code generated by an AI or LLM and removed AI labels Feb 3, 2026

jbachorik and others added 7 commits February 5, 2026 11:19

Merge branch 'master' into jb/j9_crash_report

294e5e0

Merge branch 'master' into jb/j9_crash_report

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Merge branch 'master' into jb/j9_crash_report

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Add J9/OpenJ9 crash tracking support#10496

Add J9/OpenJ9 crash tracking support#10496
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jbachorik commented Feb 2, 2026

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