Reproducer for Virtual Thread issues by AlexeyKuznetsov-DD · Pull Request #10698 · DataDog/dd-trace-java

AlexeyKuznetsov-DD · 2026-02-26T21:33:10Z

What Does This Do

Reproducer for Virtual Thread issues

Motivation

Debug why test failed on CI

Additional Notes

Do not merge

pr-commenter · 2026-02-26T22:23:11Z

Benchmarks

Startup

Parameters

	Baseline	Candidate
baseline_or_candidate	baseline	candidate
git_branch	master	alexeyk/vt-hang-reproducer
git_commit_date	1772132657	1772141517
git_commit_sha	`1185d74`	`fe5b6e5`
release_version	1.60.0-SNAPSHOT~1185d745d0	1.60.0-SNAPSHOT~fe5b6e5a4c

See matching parameters

	Baseline	Candidate
application	insecure-bank	insecure-bank
ci_job_date	1772143461	1772143461
ci_job_id	1460926249	1460926249
ci_pipeline_id	99300796	99300796
cpu_model	Intel(R) Xeon(R) Platinum 8175M CPU @ 2.50GHz	Intel(R) Xeon(R) Platinum 8175M CPU @ 2.50GHz
kernel_version	Linux runner-zfyrx7zua-project-304-concurrent-0-rv35etvu 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-rv35etvu 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 1 performance improvements and 0 performance regressions! Performance is the same for 58 metrics, 12 unstable metrics.

scenario	Δ mean execution_time	candidate mean execution_time	baseline mean execution_time
scenario:startup:petclinic:profiling:Flare Poller	better [-439.150µs; -103.477µs] or [-10.934%; -2.576%]	3.745ms	4.016ms

Startup time reports for petclinic

gantt
    title petclinic - global startup overhead: candidate=1.60.0-SNAPSHOT~fe5b6e5a4c, baseline=1.60.0-SNAPSHOT~1185d745d0

    dateFormat X
    axisFormat %s
section tracing
Agent [baseline] (1.091 s) : 0, 1090983
Total [baseline] (11.184 s) : 0, 11183566
Agent [candidate] (1.09 s) : 0, 1089907
Total [candidate] (11.337 s) : 0, 11337224
section appsec
Agent [baseline] (1.274 s) : 0, 1274229
Total [baseline] (11.291 s) : 0, 11291337
Agent [candidate] (1.272 s) : 0, 1271779
Total [candidate] (11.302 s) : 0, 11302246
section iast
Agent [baseline] (1.268 s) : 0, 1268086
Total [baseline] (11.317 s) : 0, 11316775
Agent [candidate] (1.262 s) : 0, 1261590
Total [candidate] (11.426 s) : 0, 11426355
section profiling
Agent [baseline] (1.227 s) : 0, 1227157
Total [baseline] (11.395 s) : 0, 11394773
Agent [candidate] (1.215 s) : 0, 1214647
Total [candidate] (11.114 s) : 0, 11114059

baseline results

Module	Variant	Duration	Δ tracing
Agent	tracing	1.091 s	-
Agent	appsec	1.274 s	183.246 ms (16.8%)
Agent	iast	1.268 s	177.104 ms (16.2%)
Agent	profiling	1.227 s	136.175 ms (12.5%)
Total	tracing	11.184 s	-
Total	appsec	11.291 s	107.771 ms (1.0%)
Total	iast	11.317 s	133.208 ms (1.2%)
Total	profiling	11.395 s	211.207 ms (1.9%)

candidate results

Module	Variant	Duration	Δ tracing
Agent	tracing	1.09 s	-
Agent	appsec	1.272 s	181.872 ms (16.7%)
Agent	iast	1.262 s	171.682 ms (15.8%)
Agent	profiling	1.215 s	124.74 ms (11.4%)
Total	tracing	11.337 s	-
Total	appsec	11.302 s	-34.979 ms (-0.3%)
Total	iast	11.426 s	89.131 ms (0.8%)
Total	profiling	11.114 s	-223.166 ms (-2.0%)

gantt
    title petclinic - break down per module: candidate=1.60.0-SNAPSHOT~fe5b6e5a4c, baseline=1.60.0-SNAPSHOT~1185d745d0

    dateFormat X
    axisFormat %s
section tracing
crashtracking [baseline] (1.246 ms) : 0, 1246
crashtracking [candidate] (1.234 ms) : 0, 1234
BytebuddyAgent [baseline] (642.528 ms) : 0, 642528
BytebuddyAgent [candidate] (641.144 ms) : 0, 641144
AgentMeter [baseline] (29.681 ms) : 0, 29681
AgentMeter [candidate] (29.68 ms) : 0, 29680
GlobalTracer [baseline] (264.67 ms) : 0, 264670
GlobalTracer [candidate] (264.516 ms) : 0, 264516
AppSec [baseline] (33.667 ms) : 0, 33667
AppSec [candidate] (33.635 ms) : 0, 33635
Debugger [baseline] (65.05 ms) : 0, 65050
Debugger [candidate] (64.866 ms) : 0, 64866
Remote Config [baseline] (661.794 µs) : 0, 662
Remote Config [candidate] (645.252 µs) : 0, 645
Telemetry [baseline] (9.483 ms) : 0, 9483
Telemetry [candidate] (10.378 ms) : 0, 10378
Flare Poller [baseline] (7.326 ms) : 0, 7326
Flare Poller [candidate] (7.279 ms) : 0, 7279
section appsec
crashtracking [baseline] (1.239 ms) : 0, 1239
crashtracking [candidate] (1.258 ms) : 0, 1258
BytebuddyAgent [baseline] (673.829 ms) : 0, 673829
BytebuddyAgent [candidate] (674.565 ms) : 0, 674565
AgentMeter [baseline] (12.331 ms) : 0, 12331
AgentMeter [candidate] (12.317 ms) : 0, 12317
GlobalTracer [baseline] (266.861 ms) : 0, 266861
GlobalTracer [candidate] (265.354 ms) : 0, 265354
IAST [baseline] (26.579 ms) : 0, 26579
IAST [candidate] (26.305 ms) : 0, 26305
AppSec [baseline] (173.277 ms) : 0, 173277
AppSec [candidate] (172.228 ms) : 0, 172228
Debugger [baseline] (69.503 ms) : 0, 69503
Debugger [candidate] (68.932 ms) : 0, 68932
Remote Config [baseline] (671.144 µs) : 0, 671
Remote Config [candidate] (700.146 µs) : 0, 700
Telemetry [baseline] (9.867 ms) : 0, 9867
Telemetry [candidate] (9.867 ms) : 0, 9867
Flare Poller [baseline] (3.76 ms) : 0, 3760
Flare Poller [candidate] (3.774 ms) : 0, 3774
section iast
crashtracking [baseline] (1.239 ms) : 0, 1239
crashtracking [candidate] (1.227 ms) : 0, 1227
BytebuddyAgent [baseline] (817.045 ms) : 0, 817045
BytebuddyAgent [candidate] (811.519 ms) : 0, 811519
AgentMeter [baseline] (11.669 ms) : 0, 11669
AgentMeter [candidate] (11.596 ms) : 0, 11596
GlobalTracer [baseline] (256.476 ms) : 0, 256476
GlobalTracer [candidate] (255.929 ms) : 0, 255929
IAST [baseline] (28.254 ms) : 0, 28254
IAST [candidate] (28.207 ms) : 0, 28207
AppSec [baseline] (36.259 ms) : 0, 36259
AppSec [candidate] (35.439 ms) : 0, 35439
Debugger [baseline] (67.682 ms) : 0, 67682
Debugger [candidate] (68.127 ms) : 0, 68127
Remote Config [baseline] (574.956 µs) : 0, 575
Remote Config [candidate] (559.717 µs) : 0, 560
Telemetry [baseline] (8.889 ms) : 0, 8889
Telemetry [candidate] (9.001 ms) : 0, 9001
Flare Poller [baseline] (3.561 ms) : 0, 3561
Flare Poller [candidate] (3.608 ms) : 0, 3608
section profiling
crashtracking [baseline] (1.223 ms) : 0, 1223
crashtracking [candidate] (1.248 ms) : 0, 1248
BytebuddyAgent [baseline] (699.702 ms) : 0, 699702
BytebuddyAgent [candidate] (695.15 ms) : 0, 695150
AgentMeter [baseline] (8.905 ms) : 0, 8905
AgentMeter [candidate] (8.809 ms) : 0, 8809
GlobalTracer [baseline] (225.713 ms) : 0, 225713
GlobalTracer [candidate] (222.657 ms) : 0, 222657
AppSec [baseline] (34.341 ms) : 0, 34341
AppSec [candidate] (33.63 ms) : 0, 33630
Debugger [baseline] (70.137 ms) : 0, 70137
Debugger [candidate] (69.768 ms) : 0, 69768
Remote Config [baseline] (671.7 µs) : 0, 672
Remote Config [candidate] (663.273 µs) : 0, 663
Telemetry [baseline] (9.364 ms) : 0, 9364
Telemetry [candidate] (9.181 ms) : 0, 9181
Flare Poller [baseline] (4.016 ms) : 0, 4016
Flare Poller [candidate] (3.745 ms) : 0, 3745
ProfilingAgent [baseline] (101.549 ms) : 0, 101549
ProfilingAgent [candidate] (98.496 ms) : 0, 98496
Profiling [baseline] (102.17 ms) : 0, 102170
Profiling [candidate] (99.081 ms) : 0, 99081

Startup time reports for insecure-bank

gantt
    title insecure-bank - global startup overhead: candidate=1.60.0-SNAPSHOT~fe5b6e5a4c, baseline=1.60.0-SNAPSHOT~1185d745d0

    dateFormat X
    axisFormat %s
section tracing
Agent [baseline] (1.101 s) : 0, 1101172
Total [baseline] (9.345 s) : 0, 9344791
Agent [candidate] (1.086 s) : 0, 1086433
Total [candidate] (9.286 s) : 0, 9286267
section iast
Agent [baseline] (1.263 s) : 0, 1263474
Total [baseline] (9.954 s) : 0, 9954381
Agent [candidate] (1.259 s) : 0, 1259015
Total [candidate] (9.939 s) : 0, 9938534

baseline results

Module	Variant	Duration	Δ tracing
Agent	tracing	1.101 s	-
Agent	iast	1.263 s	162.302 ms (14.7%)
Total	tracing	9.345 s	-
Total	iast	9.954 s	609.59 ms (6.5%)

candidate results

Module	Variant	Duration	Δ tracing
Agent	tracing	1.086 s	-
Agent	iast	1.259 s	172.582 ms (15.9%)
Total	tracing	9.286 s	-
Total	iast	9.939 s	652.267 ms (7.0%)

gantt
    title insecure-bank - break down per module: candidate=1.60.0-SNAPSHOT~fe5b6e5a4c, baseline=1.60.0-SNAPSHOT~1185d745d0

    dateFormat X
    axisFormat %s
section tracing
crashtracking [baseline] (1.26 ms) : 0, 1260
crashtracking [candidate] (1.244 ms) : 0, 1244
BytebuddyAgent [baseline] (647.337 ms) : 0, 647337
BytebuddyAgent [candidate] (638.845 ms) : 0, 638845
AgentMeter [baseline] (29.991 ms) : 0, 29991
AgentMeter [candidate] (29.582 ms) : 0, 29582
GlobalTracer [baseline] (267.132 ms) : 0, 267132
GlobalTracer [candidate] (264.298 ms) : 0, 264298
AppSec [baseline] (34.239 ms) : 0, 34239
AppSec [candidate] (33.574 ms) : 0, 33574
Debugger [baseline] (64.043 ms) : 0, 64043
Debugger [candidate] (66.22 ms) : 0, 66220
Remote Config [baseline] (665.14 µs) : 0, 665
Remote Config [candidate] (648.162 µs) : 0, 648
Telemetry [baseline] (14.041 ms) : 0, 14041
Telemetry [candidate] (10.144 ms) : 0, 10144
Flare Poller [baseline] (5.618 ms) : 0, 5618
Flare Poller [candidate] (5.438 ms) : 0, 5438
section iast
crashtracking [baseline] (1.236 ms) : 0, 1236
crashtracking [candidate] (1.244 ms) : 0, 1244
BytebuddyAgent [baseline] (814.783 ms) : 0, 814783
BytebuddyAgent [candidate] (810.382 ms) : 0, 810382
AgentMeter [baseline] (11.595 ms) : 0, 11595
AgentMeter [candidate] (11.558 ms) : 0, 11558
GlobalTracer [baseline] (255.237 ms) : 0, 255237
GlobalTracer [candidate] (254.838 ms) : 0, 254838
IAST [baseline] (27.932 ms) : 0, 27932
IAST [candidate] (28.211 ms) : 0, 28211
AppSec [baseline] (33.677 ms) : 0, 33677
AppSec [candidate] (35.722 ms) : 0, 35722
Debugger [baseline] (69.261 ms) : 0, 69261
Debugger [candidate] (67.726 ms) : 0, 67726
Remote Config [baseline] (574.866 µs) : 0, 575
Remote Config [candidate] (570.744 µs) : 0, 571
Telemetry [baseline] (8.931 ms) : 0, 8931
Telemetry [candidate] (8.888 ms) : 0, 8888
Flare Poller [baseline] (3.575 ms) : 0, 3575
Flare Poller [candidate] (3.544 ms) : 0, 3544

Load

Parameters

	Baseline	Candidate
baseline_or_candidate	baseline	candidate
git_branch	master	alexeyk/vt-hang-reproducer
git_commit_date	1772132657	1772141517
git_commit_sha	`1185d74`	`fe5b6e5`
release_version	1.60.0-SNAPSHOT~1185d745d0	1.60.0-SNAPSHOT~fe5b6e5a4c

See matching parameters

	Baseline	Candidate
application	insecure-bank	insecure-bank
ci_job_date	1772144032	1772144032
ci_job_id	1460926250	1460926250
ci_pipeline_id	99300796	99300796
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-g9pwpl62 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-g9pwpl62 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 3 performance regressions! Performance is the same for 18 metrics, 15 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:petclinic:code_origins:high_load	worse [+0.705ms; +1.653ms] or [+4.081%; +9.566%]	worse [+0.933ms; +2.504ms] or [+3.294%; +8.840%]	unstable [-40.955op/s; +14.142op/s] or [-15.535%; +5.364%]	18.459ms	30.045ms	250.219op/s	17.279ms	28.326ms	263.625op/s
scenario:load:petclinic:no_agent:high_load	worse [+0.459ms; +2.192ms] or [+2.643%; +12.612%]	unsure [+0.547ms; +3.417ms] or [+1.895%; +11.841%]	unstable [-46.071op/s; +10.446op/s] or [-17.474%; +3.962%]	18.707ms	30.837ms	245.844op/s	17.381ms	28.855ms	263.656op/s

Request duration reports for petclinic

gantt
    title petclinic - request duration [CI 0.99] : candidate=1.60.0-SNAPSHOT~fe5b6e5a4c, baseline=1.60.0-SNAPSHOT~1185d745d0
    dateFormat X
    axisFormat %s
section baseline
no_agent (17.697 ms) : 17521, 17874
.   : milestone, 17697,
appsec (18.609 ms) : 18418, 18799
.   : milestone, 18609,
code_origins (17.697 ms) : 17522, 17872
.   : milestone, 17697,
iast (17.439 ms) : 17266, 17612
.   : milestone, 17439,
profiling (18.456 ms) : 18273, 18639
.   : milestone, 18456,
tracing (17.89 ms) : 17716, 18065
.   : milestone, 17890,
section candidate
no_agent (18.987 ms) : 18793, 19182
.   : milestone, 18987,
appsec (18.069 ms) : 17887, 18252
.   : milestone, 18069,
code_origins (18.655 ms) : 18466, 18844
.   : milestone, 18655,
iast (17.574 ms) : 17396, 17752
.   : milestone, 17574,
profiling (18.838 ms) : 18648, 19027
.   : milestone, 18838,
tracing (17.764 ms) : 17586, 17941
.   : milestone, 17764,

baseline results

Variant	Request duration [CI 0.99]	Δ no_agent
no_agent	17.697 ms [17.521 ms, 17.874 ms]	-
appsec	18.609 ms [18.418 ms, 18.799 ms]	911.378 µs (5.1%)
code_origins	17.697 ms [17.522 ms, 17.872 ms]	-0.346 µs (-0.0%)
iast	17.439 ms [17.266 ms, 17.612 ms]	-258.447 µs (-1.5%)
profiling	18.456 ms [18.273 ms, 18.639 ms]	758.876 µs (4.3%)
tracing	17.89 ms [17.716 ms, 18.065 ms]	192.936 µs (1.1%)

candidate results

Variant	Request duration [CI 0.99]	Δ no_agent
no_agent	18.987 ms [18.793 ms, 19.182 ms]	-
appsec	18.069 ms [17.887 ms, 18.252 ms]	-918.129 µs (-4.8%)
code_origins	18.655 ms [18.466 ms, 18.844 ms]	-332.22 µs (-1.7%)
iast	17.574 ms [17.396 ms, 17.752 ms]	-1.413 ms (-7.4%)
profiling	18.838 ms [18.648 ms, 19.027 ms]	-149.795 µs (-0.8%)
tracing	17.764 ms [17.586 ms, 17.941 ms]	-1.224 ms (-6.4%)

Request duration reports for insecure-bank

gantt
    title insecure-bank - request duration [CI 0.99] : candidate=1.60.0-SNAPSHOT~fe5b6e5a4c, baseline=1.60.0-SNAPSHOT~1185d745d0
    dateFormat X
    axisFormat %s
section baseline
no_agent (1.201 ms) : 1189, 1213
.   : milestone, 1201,
iast (3.147 ms) : 3104, 3189
.   : milestone, 3147,
iast_FULL (5.559 ms) : 5504, 5614
.   : milestone, 5559,
iast_GLOBAL (3.784 ms) : 3720, 3848
.   : milestone, 3784,
profiling (2.086 ms) : 2067, 2105
.   : milestone, 2086,
tracing (1.77 ms) : 1755, 1785
.   : milestone, 1770,
section candidate
no_agent (1.2 ms) : 1187, 1212
.   : milestone, 1200,
iast (3.172 ms) : 3127, 3218
.   : milestone, 3172,
iast_FULL (5.695 ms) : 5638, 5752
.   : milestone, 5695,
iast_GLOBAL (3.665 ms) : 3603, 3728
.   : milestone, 3665,
profiling (2.115 ms) : 2096, 2134
.   : milestone, 2115,
tracing (1.782 ms) : 1767, 1796
.   : milestone, 1782,

baseline results

Variant	Request duration [CI 0.99]	Δ no_agent
no_agent	1.201 ms [1.189 ms, 1.213 ms]	-
iast	3.147 ms [3.104 ms, 3.189 ms]	1.946 ms (162.0%)
iast_FULL	5.559 ms [5.504 ms, 5.614 ms]	4.358 ms (362.9%)
iast_GLOBAL	3.784 ms [3.72 ms, 3.848 ms]	2.583 ms (215.1%)
profiling	2.086 ms [2.067 ms, 2.105 ms]	885.274 µs (73.7%)
tracing	1.77 ms [1.755 ms, 1.785 ms]	569.472 µs (47.4%)

candidate results

Variant	Request duration [CI 0.99]	Δ no_agent
no_agent	1.2 ms [1.187 ms, 1.212 ms]	-
iast	3.172 ms [3.127 ms, 3.218 ms]	1.973 ms (164.4%)
iast_FULL	5.695 ms [5.638 ms, 5.752 ms]	4.496 ms (374.7%)
iast_GLOBAL	3.665 ms [3.603 ms, 3.728 ms]	2.466 ms (205.5%)
profiling	2.115 ms [2.096 ms, 2.134 ms]	915.239 µs (76.3%)
tracing	1.782 ms [1.767 ms, 1.796 ms]	581.821 µs (48.5%)

Dacapo

Parameters

	Baseline	Candidate
baseline_or_candidate	baseline	candidate
git_branch	master	alexeyk/vt-hang-reproducer
git_commit_date	1772132657	1772141517
git_commit_sha	`1185d74`	`fe5b6e5`
release_version	1.60.0-SNAPSHOT~1185d745d0	1.60.0-SNAPSHOT~fe5b6e5a4c

See matching parameters

	Baseline	Candidate
application	biojava	biojava
ci_job_date	1772143759	1772143759
ci_job_id	1460926251	1460926251
ci_pipeline_id	99300796	99300796
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-wqyx9rf5 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-wqyx9rf5 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 1 performance improvements and 0 performance regressions! Performance is the same for 10 metrics, 1 unstable metrics.

scenario	Δ mean execution_time	candidate mean execution_time	baseline mean execution_time
scenario:dacapo:tomcat:appsec	better [-1.462ms; -1.116ms] or [-38.544%; -29.424%]	2.504ms	3.793ms

Execution time for tomcat

gantt
    title tomcat - execution time [CI 0.99] : candidate=1.60.0-SNAPSHOT~fe5b6e5a4c, baseline=1.60.0-SNAPSHOT~1185d745d0
    dateFormat X
    axisFormat %s
section baseline
no_agent (1.471 ms) : 1459, 1483
.   : milestone, 1471,
appsec (3.793 ms) : 3572, 4014
.   : milestone, 3793,
iast (2.248 ms) : 2179, 2317
.   : milestone, 2248,
iast_GLOBAL (2.282 ms) : 2213, 2351
.   : milestone, 2282,
profiling (2.067 ms) : 2013, 2121
.   : milestone, 2067,
tracing (2.053 ms) : 2000, 2107
.   : milestone, 2053,
section candidate
no_agent (1.468 ms) : 1456, 1479
.   : milestone, 1468,
appsec (2.504 ms) : 2450, 2558
.   : milestone, 2504,
iast (2.246 ms) : 2177, 2314
.   : milestone, 2246,
iast_GLOBAL (2.287 ms) : 2218, 2357
.   : milestone, 2287,
profiling (2.501 ms) : 2335, 2666
.   : milestone, 2501,
tracing (2.061 ms) : 2007, 2114
.   : milestone, 2061,

baseline results

Variant	Execution Time [CI 0.99]	Δ no_agent
no_agent	1.471 ms [1.459 ms, 1.483 ms]	-
appsec	3.793 ms [3.572 ms, 4.014 ms]	2.322 ms (157.8%)
iast	2.248 ms [2.179 ms, 2.317 ms]	777.28 µs (52.8%)
iast_GLOBAL	2.282 ms [2.213 ms, 2.351 ms]	811.378 µs (55.2%)
profiling	2.067 ms [2.013 ms, 2.121 ms]	596.263 µs (40.5%)
tracing	2.053 ms [2.0 ms, 2.107 ms]	582.541 µs (39.6%)

candidate results

Variant	Execution Time [CI 0.99]	Δ no_agent
no_agent	1.468 ms [1.456 ms, 1.479 ms]	-
appsec	2.504 ms [2.45 ms, 2.558 ms]	1.036 ms (70.6%)
iast	2.246 ms [2.177 ms, 2.314 ms]	777.777 µs (53.0%)
iast_GLOBAL	2.287 ms [2.218 ms, 2.357 ms]	819.519 µs (55.8%)
profiling	2.501 ms [2.335 ms, 2.666 ms]	1.033 ms (70.3%)
tracing	2.061 ms [2.007 ms, 2.114 ms]	592.666 µs (40.4%)

Execution time for biojava

gantt
    title biojava - execution time [CI 0.99] : candidate=1.60.0-SNAPSHOT~fe5b6e5a4c, baseline=1.60.0-SNAPSHOT~1185d745d0
    dateFormat X
    axisFormat %s
section baseline
no_agent (15.685 s) : 15685000, 15685000
.   : milestone, 15685000,
appsec (14.951 s) : 14951000, 14951000
.   : milestone, 14951000,
iast (18.094 s) : 18094000, 18094000
.   : milestone, 18094000,
iast_GLOBAL (17.733 s) : 17733000, 17733000
.   : milestone, 17733000,
profiling (15.087 s) : 15087000, 15087000
.   : milestone, 15087000,
tracing (14.495 s) : 14495000, 14495000
.   : milestone, 14495000,
section candidate
no_agent (15.374 s) : 15374000, 15374000
.   : milestone, 15374000,
appsec (14.931 s) : 14931000, 14931000
.   : milestone, 14931000,
iast (18.123 s) : 18123000, 18123000
.   : milestone, 18123000,
iast_GLOBAL (17.968 s) : 17968000, 17968000
.   : milestone, 17968000,
profiling (14.906 s) : 14906000, 14906000
.   : milestone, 14906000,
tracing (14.529 s) : 14529000, 14529000
.   : milestone, 14529000,

baseline results

Variant	Execution Time [CI 0.99]	Δ no_agent
no_agent	15.685 s [15.685 s, 15.685 s]	-
appsec	14.951 s [14.951 s, 14.951 s]	-734.0 ms (-4.7%)
iast	18.094 s [18.094 s, 18.094 s]	2.409 s (15.4%)
iast_GLOBAL	17.733 s [17.733 s, 17.733 s]	2.048 s (13.1%)
profiling	15.087 s [15.087 s, 15.087 s]	-598.0 ms (-3.8%)
tracing	14.495 s [14.495 s, 14.495 s]	-1.19 s (-7.6%)

candidate results

Variant	Execution Time [CI 0.99]	Δ no_agent
no_agent	15.374 s [15.374 s, 15.374 s]	-
appsec	14.931 s [14.931 s, 14.931 s]	-443.0 ms (-2.9%)
iast	18.123 s [18.123 s, 18.123 s]	2.749 s (17.9%)
iast_GLOBAL	17.968 s [17.968 s, 17.968 s]	2.594 s (16.9%)
profiling	14.906 s [14.906 s, 14.906 s]	-468.0 ms (-3.0%)
tracing	14.529 s [14.529 s, 14.529 s]	-845.0 ms (-5.5%)

Reproducer for Virtual Thread issues

fe5b6e5

AlexeyKuznetsov-DD self-assigned this Feb 26, 2026

AlexeyKuznetsov-DD added type: bug Bug report and fix tag: do not merge Do not merge changes inst: java Core Java language instrumentation labels Feb 26, 2026

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Reproducer for Virtual Thread issues#10698

Reproducer for Virtual Thread issues#10698
AlexeyKuznetsov-DD wants to merge 1 commit intomasterfrom
alexeyk/vt-hang-reproducer

AlexeyKuznetsov-DD commented Feb 26, 2026

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AlexeyKuznetsov-DD commented Feb 26, 2026

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