Avoid preferences lock file contention for tests due to spawned child processes by bric3 · Pull Request #10083 · DataDog/dd-trace-java

bric3 · 2025-12-04T16:56:45Z

What Does This Do

Prevents

Couldn't flush user prefs: java.util.prefs.BackingStoreException: Couldn't get file lock.

that is observed after bumping the Gradle Daemon JDK to 21, see:

Re-apply "Bump spotbugs gradle plugin to 6.4.7 (#10025)" #10074

Motivation

CI stability

Additional Notes

CI builds intermittently (very often) fail with Java Preferences API file locking errors:

Couldn't flush user prefs: java.util.prefs.BackingStoreException: Couldn't get file lock.

In particular it was spotted smoke jobs that ran the following tests

MetricProbesIntegrationTest (:dd-smoke-tests:debugger-integration-tests)
SpringBootGrpcCompletableFutureTest (:dd-smoke-tests:springboot-grpc)
Gradle tests (:dd-smoke-tests:gradle)
And generally tests that spawn child JVMs

Java's FileSystemPreferences stores user preferences in a shared directory:

userRootDir = newFile(
System.getProperty("java.util.prefs.userRoot",
System.getProperty("user.home")),
".java/.userPrefs"
);

When java.util.prefs.userRoot is not set, all JVMs default to $HOME/.java/.userPrefs/. While there's no stack trace, looking at the code suggest the following :

This code is triggered, the preferences system depends on the OS, on Linux the implementation is FilePreferencesSystem. This message Couldn't flush user prefs: java.util.prefs.BackingStoreException: Couldn't get file lock. can only be created via this call stack
```
FilePreferencesSystem.sync()
FilePreferencesSystem.flush()
FilePreferencesSystem.syncWorld()
```
The sync method calls FilePreferencesSystem.lockFile, which tries to acquire a file lock which actually a named lock file: $HOME/.java/.userPrefs/.user.lock.non-root-user. This method will try 5 times at most each time using an exponential backoff strategy. Looking at thew code and the error suggest it is not a permission issue which is confirmed by looking at the folder permissions on the runner:
```
$ ls -lah $HOME/.java/.userPrefs
drwx------ 3 non-root-user non-root-group 4.0K Dec 8 13:28 .
drwxr-xr-x 3 non-root-user non-root-group 4.0K Dec 8 13:27 ..
drwxr-xr-x 3 non-root-user non-root-group 4.0K Dec 8 13:28 org
-rw------- 1 non-root-user non-root-group 0 Dec 8 13:28 .user.lock.non-root-user
-rw------- 1 non-root-user non-root-group 0 Dec 8 13:28 .userRootModFile.non-root-user
```
Also nothing fancy on the native part.
FilePreferencesSystem has a static initializer that register in addShutdownHook a timer task and a shutdown hook that call FilePreferencesSystem.syncWorld().

Our project don't have to rely on preferences, but third party lib or build tool might use it. Also this error only happens for the user preferences only, which can be accessed via java.util.prefs.Preferences.userRoot(), looking for that there's a couple of them, groovy, spring-beans, gradle (to workaround a Groovy Classloader leak) ...yet without hard evidence this code path is actually run, I can't incriminate them.

Note, another avenue might be to disable user preferences for tests, for example by passing a custom preference factory.

-Djava.util.prefs.PreferencesFactory=com.datadog.util.prefs.NoOpPreferencesFactory

Contributor Checklist

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Jira ticket: [PROJ-IDENT]

pr-commenter · 2025-12-04T17:45:35Z

Benchmarks

Startup

Parameters

	Baseline	Candidate
baseline_or_candidate	baseline	candidate
git_branch	master	bdu/change-preferences-dir-for-tests
git_commit_date	1764970693	1765230350
git_commit_sha	`823cec6`	`bc84896`
release_version	1.57.0-SNAPSHOT~823cec6aa6	1.57.0-SNAPSHOT~bc8489613b

See matching parameters

	Baseline	Candidate
application	insecure-bank	insecure-bank
ci_job_date	1765232287	1765232287
ci_job_id	1277618465	1277618465
ci_pipeline_id	85424438	85424438
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-0-5kof63ho 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-0-5kof63ho 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 60 metrics, 5 unstable metrics.

Startup time reports for insecure-bank

gantt
title insecure-bank - global startup overhead: candidate=1.57.0-SNAPSHOT~bc8489613b, baseline=1.57.0-SNAPSHOT~823cec6aa6
dateFormat X
axisFormat %s
section tracing
Agent [baseline] (1.09 s) : 0, 1089580
Total [baseline] (8.788 s) : 0, 8788452
Agent [candidate] (1.091 s) : 0, 1090799
Total [candidate] (8.781 s) : 0, 8780989
section iast
Agent [baseline] (1.226 s) : 0, 1225568
Total [baseline] (9.487 s) : 0, 9486879
Agent [candidate] (1.226 s) : 0, 1226107
Total [candidate] (9.489 s) : 0, 9489417

baseline results

Module	Variant	Duration	Δ tracing
Agent	tracing	1.09 s	-
Agent	iast	1.226 s	135.989 ms (12.5%)
Total	tracing	8.788 s	-
Total	iast	9.487 s	698.428 ms (7.9%)

candidate results

Module	Variant	Duration	Δ tracing
Agent	tracing	1.091 s	-
Agent	iast	1.226 s	135.308 ms (12.4%)
Total	tracing	8.781 s	-
Total	iast	9.489 s	708.428 ms (8.1%)

gantt
title insecure-bank - break down per module: candidate=1.57.0-SNAPSHOT~bc8489613b, baseline=1.57.0-SNAPSHOT~823cec6aa6
dateFormat X
axisFormat %s
section tracing
crashtracking [baseline] (1.208 ms) : 0, 1208
crashtracking [candidate] (1.206 ms) : 0, 1206
BytebuddyAgent [baseline] (653.55 ms) : 0, 653550
BytebuddyAgent [candidate] (656.897 ms) : 0, 656897
GlobalTracer [baseline] (284.543 ms) : 0, 284543
GlobalTracer [candidate] (283.986 ms) : 0, 283986
AppSec [baseline] (32.719 ms) : 0, 32719
AppSec [candidate] (32.592 ms) : 0, 32592
Debugger [baseline] (68.215 ms) : 0, 68215
Debugger [candidate] (67.054 ms) : 0, 67054
Remote Config [baseline] (640.755 µs) : 0, 641
Remote Config [candidate] (633.118 µs) : 0, 633
Telemetry [baseline] (9.108 ms) : 0, 9108
Telemetry [candidate] (8.852 ms) : 0, 8852
Flare Poller [baseline] (3.727 ms) : 0, 3727
Flare Poller [candidate] (3.662 ms) : 0, 3662
section iast
crashtracking [baseline] (1.197 ms) : 0, 1197
crashtracking [candidate] (1.202 ms) : 0, 1202
BytebuddyAgent [baseline] (791.614 ms) : 0, 791614
BytebuddyAgent [candidate] (792.927 ms) : 0, 792927
GlobalTracer [baseline] (256.149 ms) : 0, 256149
GlobalTracer [candidate] (256.247 ms) : 0, 256247
IAST [baseline] (27.221 ms) : 0, 27221
IAST [candidate] (27.023 ms) : 0, 27023
AppSec [baseline] (35.724 ms) : 0, 35724
AppSec [candidate] (35.701 ms) : 0, 35701
Debugger [baseline] (65.7 ms) : 0, 65700
Debugger [candidate] (64.99 ms) : 0, 64990
Remote Config [baseline] (547.248 µs) : 0, 547
Remote Config [candidate] (546.704 µs) : 0, 547
Telemetry [baseline] (8.441 ms) : 0, 8441
Telemetry [candidate] (8.442 ms) : 0, 8442
Flare Poller [baseline] (3.454 ms) : 0, 3454
Flare Poller [candidate] (3.486 ms) : 0, 3486

Startup time reports for petclinic

gantt
title petclinic - global startup overhead: candidate=1.57.0-SNAPSHOT~bc8489613b, baseline=1.57.0-SNAPSHOT~823cec6aa6
dateFormat X
axisFormat %s
section tracing
Agent [baseline] (1.083 s) : 0, 1082913
Total [baseline] (10.826 s) : 0, 10825672
Agent [candidate] (1.083 s) : 0, 1083124
Total [candidate] (10.843 s) : 0, 10842734
section appsec
Agent [baseline] (1.268 s) : 0, 1267885
Total [baseline] (11.179 s) : 0, 11179176
Agent [candidate] (1.278 s) : 0, 1277846
Total [candidate] (11.223 s) : 0, 11223418
section iast
Agent [baseline] (1.231 s) : 0, 1230995
Total [baseline] (11.301 s) : 0, 11301031
Agent [candidate] (1.225 s) : 0, 1225102
Total [candidate] (11.136 s) : 0, 11135914
section profiling
Agent [baseline] (1.218 s) : 0, 1218027
Total [baseline] (11.013 s) : 0, 11012760
Agent [candidate] (1.207 s) : 0, 1207062
Total [candidate] (11.144 s) : 0, 11144484

baseline results

Module	Variant	Duration	Δ tracing
Agent	tracing	1.083 s	-
Agent	appsec	1.268 s	184.972 ms (17.1%)
Agent	iast	1.231 s	148.082 ms (13.7%)
Agent	profiling	1.218 s	135.114 ms (12.5%)
Total	tracing	10.826 s	-
Total	appsec	11.179 s	353.504 ms (3.3%)
Total	iast	11.301 s	475.359 ms (4.4%)
Total	profiling	11.013 s	187.088 ms (1.7%)

candidate results

Module	Variant	Duration	Δ tracing
Agent	tracing	1.083 s	-
Agent	appsec	1.278 s	194.722 ms (18.0%)
Agent	iast	1.225 s	141.979 ms (13.1%)
Agent	profiling	1.207 s	123.939 ms (11.4%)
Total	tracing	10.843 s	-
Total	appsec	11.223 s	380.685 ms (3.5%)
Total	iast	11.136 s	293.18 ms (2.7%)
Total	profiling	11.144 s	301.751 ms (2.8%)

gantt
title petclinic - break down per module: candidate=1.57.0-SNAPSHOT~bc8489613b, baseline=1.57.0-SNAPSHOT~823cec6aa6
dateFormat X
axisFormat %s
section tracing
crashtracking [baseline] (1.186 ms) : 0, 1186
crashtracking [candidate] (1.209 ms) : 0, 1209
BytebuddyAgent [baseline] (649.401 ms) : 0, 649401
BytebuddyAgent [candidate] (649.395 ms) : 0, 649395
GlobalTracer [baseline] (282.439 ms) : 0, 282439
GlobalTracer [candidate] (282.908 ms) : 0, 282908
AppSec [baseline] (32.401 ms) : 0, 32401
AppSec [candidate] (32.382 ms) : 0, 32382
Debugger [baseline] (68.431 ms) : 0, 68431
Debugger [candidate] (68.289 ms) : 0, 68289
Remote Config [baseline] (642.51 µs) : 0, 643
Remote Config [candidate] (635.337 µs) : 0, 635
Telemetry [baseline] (8.995 ms) : 0, 8995
Telemetry [candidate] (9.002 ms) : 0, 9002
Flare Poller [baseline] (3.69 ms) : 0, 3690
Flare Poller [candidate] (3.697 ms) : 0, 3697
section appsec
crashtracking [baseline] (1.195 ms) : 0, 1195
crashtracking [candidate] (1.206 ms) : 0, 1206
BytebuddyAgent [baseline] (691.081 ms) : 0, 691081
BytebuddyAgent [candidate] (697.168 ms) : 0, 697168
GlobalTracer [baseline] (259.974 ms) : 0, 259974
GlobalTracer [candidate] (262.738 ms) : 0, 262738
IAST [baseline] (24.61 ms) : 0, 24610
IAST [candidate] (25.042 ms) : 0, 25042
AppSec [baseline] (175.594 ms) : 0, 175594
AppSec [candidate] (175.019 ms) : 0, 175019
Debugger [baseline] (66.226 ms) : 0, 66226
Debugger [candidate] (67.326 ms) : 0, 67326
Remote Config [baseline] (698.67 µs) : 0, 699
Remote Config [candidate] (694.824 µs) : 0, 695
Telemetry [baseline] (8.98 ms) : 0, 8980
Telemetry [candidate] (8.894 ms) : 0, 8894
Flare Poller [baseline] (3.873 ms) : 0, 3873
Flare Poller [candidate] (3.881 ms) : 0, 3881
section iast
crashtracking [baseline] (1.192 ms) : 0, 1192
crashtracking [candidate] (1.196 ms) : 0, 1196
BytebuddyAgent [baseline] (793.884 ms) : 0, 793884
BytebuddyAgent [candidate] (791.147 ms) : 0, 791147
GlobalTracer [baseline] (257.778 ms) : 0, 257778
GlobalTracer [candidate] (256.021 ms) : 0, 256021
IAST [baseline] (27.368 ms) : 0, 27368
IAST [candidate] (27.204 ms) : 0, 27204
AppSec [baseline] (35.663 ms) : 0, 35663
AppSec [candidate] (35.502 ms) : 0, 35502
Debugger [baseline] (66.815 ms) : 0, 66815
Debugger [candidate] (66.05 ms) : 0, 66050
Remote Config [baseline] (579.034 µs) : 0, 579
Remote Config [candidate] (545.999 µs) : 0, 546
Telemetry [baseline] (8.64 ms) : 0, 8640
Telemetry [candidate] (8.472 ms) : 0, 8472
Flare Poller [baseline] (3.505 ms) : 0, 3505
Flare Poller [candidate] (3.469 ms) : 0, 3469
section profiling
crashtracking [baseline] (1.209 ms) : 0, 1209
crashtracking [candidate] (1.183 ms) : 0, 1183
BytebuddyAgent [baseline] (708.935 ms) : 0, 708935
BytebuddyAgent [candidate] (702.053 ms) : 0, 702053
GlobalTracer [baseline] (223.669 ms) : 0, 223669
GlobalTracer [candidate] (221.707 ms) : 0, 221707
AppSec [baseline] (32.938 ms) : 0, 32938
AppSec [candidate] (32.318 ms) : 0, 32318
Debugger [baseline] (69.041 ms) : 0, 69041
Debugger [candidate] (68.674 ms) : 0, 68674
Remote Config [baseline] (638.333 µs) : 0, 638
Remote Config [candidate] (651.386 µs) : 0, 651
Telemetry [baseline] (8.96 ms) : 0, 8960
Telemetry [candidate] (9.038 ms) : 0, 9038
Flare Poller [baseline] (3.762 ms) : 0, 3762
Flare Poller [candidate] (3.81 ms) : 0, 3810
ProfilingAgent [baseline] (98.451 ms) : 0, 98451
ProfilingAgent [candidate] (97.959 ms) : 0, 97959
Profiling [baseline] (99.031 ms) : 0, 99031
Profiling [candidate] (98.54 ms) : 0, 98540

Load

Parameters

	Baseline	Candidate
baseline_or_candidate	baseline	candidate
git_branch	master	bdu/change-preferences-dir-for-tests
git_commit_date	1764970693	1765230350
git_commit_sha	`823cec6`	`bc84896`
release_version	1.57.0-SNAPSHOT~823cec6aa6	1.57.0-SNAPSHOT~bc8489613b

See matching parameters

	Baseline	Candidate
application	insecure-bank	insecure-bank
ci_job_date	1765232760	1765232760
ci_job_id	1277618467	1277618467
ci_pipeline_id	85424438	85424438
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-hkzqb9bi 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-hkzqb9bi 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 2 performance improvements and 4 performance regressions! Performance is the same for 13 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:iast:high_load	unsure [+3.707µs; +180.713µs] or [+0.150%; +7.294%]	worse [+176.456µs; +616.305µs] or [+2.457%; +8.583%]	unstable [-237.820op/s; +88.570op/s] or [-16.307%; +6.073%]	2.570ms	7.577ms	1383.750op/s	2.477ms	7.180ms	1458.375op/s
scenario:load:petclinic:tracing:high_load	worse [+0.819ms; +1.788ms] or [+4.805%; +10.488%]	unsure [+0.459ms; +1.975ms] or [+1.620%; +6.976%]	unstable [-42.065op/s; +12.502op/s] or [-15.816%; +4.701%]	18.351ms	29.535ms	251.188op/s	17.047ms	28.318ms	265.969op/s
scenario:load:petclinic:code_origins:high_load	worse [+0.910ms; +1.715ms] or [+5.305%; +9.992%]	worse [+0.655ms; +2.271ms] or [+2.302%; +7.986%]	unstable [-43.959op/s; +9.834op/s] or [-16.547%; +3.702%]	18.473ms	29.898ms	248.594op/s	17.161ms	28.436ms	265.656op/s
scenario:load:petclinic:profiling:high_load	better [-2.164ms; -1.052ms] or [-10.875%; -5.286%]	better [-3.208ms; -1.125ms] or [-10.039%; -3.519%]	unstable [-5.980op/s; +45.417op/s] or [-2.589%; +19.667%]	18.289ms	29.792ms	250.656op/s	19.897ms	31.958ms	230.938op/s

Request duration reports for insecure-bank

gantt
title insecure-bank - request duration [CI 0.99] : candidate=1.57.0-SNAPSHOT~bc8489613b, baseline=1.57.0-SNAPSHOT~823cec6aa6
dateFormat X
axisFormat %s
section baseline
no_agent (1.199 ms) : 1187, 1211
. : milestone, 1199,
iast (3.136 ms) : 3098, 3173
. : milestone, 3136,
iast_FULL (5.917 ms) : 5857, 5976
. : milestone, 5917,
iast_GLOBAL (3.636 ms) : 3581, 3691
. : milestone, 3636,
profiling (2.119 ms) : 2100, 2137
. : milestone, 2119,
tracing (1.824 ms) : 1809, 1839
. : milestone, 1824,
section candidate
no_agent (1.211 ms) : 1199, 1223
. : milestone, 1211,
iast (3.308 ms) : 3261, 3356
. : milestone, 3308,
iast_FULL (5.891 ms) : 5831, 5951
. : milestone, 5891,
iast_GLOBAL (3.631 ms) : 3574, 3688
. : milestone, 3631,
profiling (1.92 ms) : 1905, 1936
. : milestone, 1920,
tracing (1.766 ms) : 1752, 1780
. : milestone, 1766,

baseline results

Variant	Request duration [CI 0.99]	Δ no_agent
no_agent	1.199 ms [1.187 ms, 1.211 ms]	-
iast	3.136 ms [3.098 ms, 3.173 ms]	1.937 ms (161.5%)
iast_FULL	5.917 ms [5.857 ms, 5.976 ms]	4.717 ms (393.3%)
iast_GLOBAL	3.636 ms [3.581 ms, 3.691 ms]	2.437 ms (203.2%)
profiling	2.119 ms [2.1 ms, 2.137 ms]	919.356 µs (76.7%)
tracing	1.824 ms [1.809 ms, 1.839 ms]	624.863 µs (52.1%)

candidate results

Variant	Request duration [CI 0.99]	Δ no_agent
no_agent	1.211 ms [1.199 ms, 1.223 ms]	-
iast	3.308 ms [3.261 ms, 3.356 ms]	2.097 ms (173.1%)
iast_FULL	5.891 ms [5.831 ms, 5.951 ms]	4.68 ms (386.4%)
iast_GLOBAL	3.631 ms [3.574 ms, 3.688 ms]	2.42 ms (199.8%)
profiling	1.92 ms [1.905 ms, 1.936 ms]	708.951 µs (58.5%)
tracing	1.766 ms [1.752 ms, 1.78 ms]	554.473 µs (45.8%)

Request duration reports for petclinic

gantt
title petclinic - request duration [CI 0.99] : candidate=1.57.0-SNAPSHOT~bc8489613b, baseline=1.57.0-SNAPSHOT~823cec6aa6
dateFormat X
axisFormat %s
section baseline
no_agent (18.095 ms) : 17909, 18281
. : milestone, 18095,
appsec (18.658 ms) : 18472, 18845
. : milestone, 18658,
code_origins (17.563 ms) : 17387, 17738
. : milestone, 17563,
iast (17.706 ms) : 17526, 17886
. : milestone, 17706,
profiling (20.218 ms) : 20007, 20429
. : milestone, 20218,
tracing (17.545 ms) : 17371, 17719
. : milestone, 17545,
section candidate
no_agent (18.981 ms) : 18793, 19169
. : milestone, 18981,
appsec (18.481 ms) : 18294, 18668
. : milestone, 18481,
code_origins (18.777 ms) : 18586, 18969
. : milestone, 18777,
iast (17.675 ms) : 17502, 17848
. : milestone, 17675,
profiling (18.62 ms) : 18434, 18807
. : milestone, 18620,
tracing (18.579 ms) : 18390, 18767
. : milestone, 18579,

baseline results

Variant	Request duration [CI 0.99]	Δ no_agent
no_agent	18.095 ms [17.909 ms, 18.281 ms]	-
appsec	18.658 ms [18.472 ms, 18.845 ms]	563.203 µs (3.1%)
code_origins	17.563 ms [17.387 ms, 17.738 ms]	-532.518 µs (-2.9%)
iast	17.706 ms [17.526 ms, 17.886 ms]	-389.185 µs (-2.2%)
profiling	20.218 ms [20.007 ms, 20.429 ms]	2.123 ms (11.7%)
tracing	17.545 ms [17.371 ms, 17.719 ms]	-550.519 µs (-3.0%)

candidate results

Variant	Request duration [CI 0.99]	Δ no_agent
no_agent	18.981 ms [18.793 ms, 19.169 ms]	-
appsec	18.481 ms [18.294 ms, 18.668 ms]	-500.182 µs (-2.6%)
code_origins	18.777 ms [18.586 ms, 18.969 ms]	-203.715 µs (-1.1%)
iast	17.675 ms [17.502 ms, 17.848 ms]	-1.306 ms (-6.9%)
profiling	18.62 ms [18.434 ms, 18.807 ms]	-360.906 µs (-1.9%)
tracing	18.579 ms [18.39 ms, 18.767 ms]	-402.424 µs (-2.1%)

Dacapo

Parameters

	Baseline	Candidate
baseline_or_candidate	baseline	candidate
git_branch	master	bdu/change-preferences-dir-for-tests
git_commit_date	1764970693	1765230350
git_commit_sha	`823cec6`	`bc84896`
release_version	1.57.0-SNAPSHOT~823cec6aa6	1.57.0-SNAPSHOT~bc8489613b

See matching parameters

	Baseline	Candidate
application	biojava	biojava
ci_job_date	1765232466	1765232466
ci_job_id	1277618470	1277618470
ci_pipeline_id	85424438	85424438
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-lgeloyff 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-lgeloyff 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 11 metrics, 1 unstable metrics.

Execution time for tomcat

gantt
title tomcat - execution time [CI 0.99] : candidate=1.57.0-SNAPSHOT~bc8489613b, baseline=1.57.0-SNAPSHOT~823cec6aa6
dateFormat X
axisFormat %s
section baseline
no_agent (1.474 ms) : 1462, 1485
. : milestone, 1474,
appsec (3.694 ms) : 3477, 3911
. : milestone, 3694,
iast (2.204 ms) : 2140, 2268
. : milestone, 2204,
iast_GLOBAL (2.247 ms) : 2182, 2311
. : milestone, 2247,
profiling (2.064 ms) : 2012, 2116
. : milestone, 2064,
tracing (2.039 ms) : 1989, 2090
. : milestone, 2039,
section candidate
no_agent (1.473 ms) : 1461, 1484
. : milestone, 1473,
appsec (3.643 ms) : 3429, 3858
. : milestone, 3643,
iast (2.212 ms) : 2147, 2276
. : milestone, 2212,
iast_GLOBAL (2.25 ms) : 2185, 2315
. : milestone, 2250,
profiling (2.084 ms) : 2030, 2138
. : milestone, 2084,
tracing (2.052 ms) : 2001, 2103
. : milestone, 2052,

baseline results

Variant	Execution Time [CI 0.99]	Δ no_agent
no_agent	1.474 ms [1.462 ms, 1.485 ms]	-
appsec	3.694 ms [3.477 ms, 3.911 ms]	2.22 ms (150.6%)
iast	2.204 ms [2.14 ms, 2.268 ms]	729.876 µs (49.5%)
iast_GLOBAL	2.247 ms [2.182 ms, 2.311 ms]	772.966 µs (52.4%)
profiling	2.064 ms [2.012 ms, 2.116 ms]	590.122 µs (40.0%)
tracing	2.039 ms [1.989 ms, 2.09 ms]	565.428 µs (38.4%)

candidate results

Variant	Execution Time [CI 0.99]	Δ no_agent
no_agent	1.473 ms [1.461 ms, 1.484 ms]	-
appsec	3.643 ms [3.429 ms, 3.858 ms]	2.17 ms (147.4%)
iast	2.212 ms [2.147 ms, 2.276 ms]	738.831 µs (50.2%)
iast_GLOBAL	2.25 ms [2.185 ms, 2.315 ms]	776.84 µs (52.7%)
profiling	2.084 ms [2.03 ms, 2.138 ms]	611.058 µs (41.5%)
tracing	2.052 ms [2.001 ms, 2.103 ms]	579.028 µs (39.3%)

Execution time for biojava

gantt
title biojava - execution time [CI 0.99] : candidate=1.57.0-SNAPSHOT~bc8489613b, baseline=1.57.0-SNAPSHOT~823cec6aa6
dateFormat X
axisFormat %s
section baseline
no_agent (14.993 s) : 14993000, 14993000
. : milestone, 14993000,
appsec (14.554 s) : 14554000, 14554000
. : milestone, 14554000,
iast (18.126 s) : 18126000, 18126000
. : milestone, 18126000,
iast_GLOBAL (17.849 s) : 17849000, 17849000
. : milestone, 17849000,
profiling (14.425 s) : 14425000, 14425000
. : milestone, 14425000,
tracing (14.593 s) : 14593000, 14593000
. : milestone, 14593000,
section candidate
no_agent (15.014 s) : 15014000, 15014000
. : milestone, 15014000,
appsec (14.572 s) : 14572000, 14572000
. : milestone, 14572000,
iast (18.077 s) : 18077000, 18077000
. : milestone, 18077000,
iast_GLOBAL (18.06 s) : 18060000, 18060000
. : milestone, 18060000,
profiling (14.528 s) : 14528000, 14528000
. : milestone, 14528000,
tracing (14.975 s) : 14975000, 14975000
. : milestone, 14975000,

baseline results

Variant	Execution Time [CI 0.99]	Δ no_agent
no_agent	14.993 s [14.993 s, 14.993 s]	-
appsec	14.554 s [14.554 s, 14.554 s]	-439.0 ms (-2.9%)
iast	18.126 s [18.126 s, 18.126 s]	3.133 s (20.9%)
iast_GLOBAL	17.849 s [17.849 s, 17.849 s]	2.856 s (19.0%)
profiling	14.425 s [14.425 s, 14.425 s]	-568.0 ms (-3.8%)
tracing	14.593 s [14.593 s, 14.593 s]	-400.0 ms (-2.7%)

candidate results

Variant	Execution Time [CI 0.99]	Δ no_agent
no_agent	15.014 s [15.014 s, 15.014 s]	-
appsec	14.572 s [14.572 s, 14.572 s]	-442.0 ms (-2.9%)
iast	18.077 s [18.077 s, 18.077 s]	3.063 s (20.4%)
iast_GLOBAL	18.06 s [18.06 s, 18.06 s]	3.046 s (20.3%)
profiling	14.528 s [14.528 s, 14.528 s]	-486.0 ms (-3.2%)
tracing	14.975 s [14.975 s, 14.975 s]	-39.0 ms (-0.3%)

…id locks

bric3 requested a review from AlexeyKuznetsov-DD December 4, 2025 16:56

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fix: Try using a test task specific folder for user preference to avo…
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fix: Use a temporary preference folder for gradle smoke tests
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Merge branch 'master' into bdu/change-preferences-dir-for-tests
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Fixed temp folder for prefs.
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fix: remove unused import
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bric3 changed the title ~~Try using a test task specific folder for user preference to avoid file locks~~Avoid preferences lock file contention for tests due to spawned child processesDec 8, 2025

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bric3 mentioned this pull request Dec 10, 2025
Increase smoke tests slots #10151
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bric3 mentioned this pull request Dec 17, 2025
Mitigate user prefs lock #10231
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bric3 mentioned this pull request Aug 14, 2026
Add smoke test JUnit framework #12111
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Avoid preferences lock file contention for tests due to spawned child processes - #10083

Avoid preferences lock file contention for tests due to spawned child processes#10083
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