Possibly use a fast path for accessing scope stacks #10071

amarziali · 2025-12-03T11:17:49Z

What Does This Do

Motivation

Additional Notes

Contributor Checklist

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Jira ticket: [PROJ-IDENT]

mcculls · 2025-12-03T11:24:50Z

dd-trace-core/src/main/java/datadog/trace/core/scopemanager/ContinuableScopeManager.java


  static final class ScopeStackThreadLocal extends ThreadLocal<ScopeStack> {

+    private final ScopeStack[] fastStacks = new ScopeStack[2048]; // This should be tuned


Something to consider from https://docs.oracle.com/javase/8/docs/api/java/lang/Thread.html#getId--:

When a thread is terminated, this thread ID may be reused

What if an instrumentation left one or more unclosed scopes on a scope stack and the owning thread died and its id was reused? Or what if a thread dies during traced work before the scope stack could be cleaned up?

pr-commenter · 2025-12-03T12:09:56Z

Benchmarks

Startup

Parameters

	Baseline	Candidate
baseline_or_candidate	baseline	candidate
git_branch	master	andrea.marziali/scopes
git_commit_date	1764709712	1764760649
git_commit_sha	`c714e59`	`36bc792`
release_version	1.57.0-SNAPSHOT~c714e59b1c	1.57.0-SNAPSHOT~36bc792951

See matching parameters

	Baseline	Candidate
application	insecure-bank	insecure-bank
ci_job_date	1764762655	1764762655
ci_job_id	1267744775	1267744775
ci_pipeline_id	84742973	84742973
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-0-736gqo59 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-0-736gqo59 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 53 metrics, 12 unstable metrics.

Startup time reports for petclinic

gantt
    title petclinic - global startup overhead: candidate=1.57.0-SNAPSHOT~36bc792951, baseline=1.57.0-SNAPSHOT~c714e59b1c

    dateFormat X
    axisFormat %s
section tracing
Agent [baseline] (1.053 s) : 0, 1052867
Total [baseline] (10.911 s) : 0, 10911320
Agent [candidate] (1.054 s) : 0, 1054267
Total [candidate] (10.938 s) : 0, 10937695
section appsec
Agent [baseline] (1.23 s) : 0, 1229811
Total [baseline] (10.888 s) : 0, 10887770
Agent [candidate] (1.225 s) : 0, 1225419
Total [candidate] (10.903 s) : 0, 10902873
section iast
Agent [baseline] (1.195 s) : 0, 1194860
Total [baseline] (11.191 s) : 0, 11191211
Agent [candidate] (1.196 s) : 0, 1196145
Total [candidate] (11.181 s) : 0, 11181143
section profiling
Agent [baseline] (1.206 s) : 0, 1205524
Total [baseline] (10.934 s) : 0, 10933779
Agent [candidate] (1.199 s) : 0, 1198813
Total [candidate] (10.869 s) : 0, 10868739

baseline results

Module	Variant	Duration	Δ tracing
Agent	tracing	1.053 s	-
Agent	appsec	1.23 s	176.944 ms (16.8%)
Agent	iast	1.195 s	141.993 ms (13.5%)
Agent	profiling	1.206 s	152.657 ms (14.5%)
Total	tracing	10.911 s	-
Total	appsec	10.888 s	-23.55 ms (-0.2%)
Total	iast	11.191 s	279.891 ms (2.6%)
Total	profiling	10.934 s	22.458 ms (0.2%)

candidate results

Module	Variant	Duration	Δ tracing
Agent	tracing	1.054 s	-
Agent	appsec	1.225 s	171.153 ms (16.2%)
Agent	iast	1.196 s	141.878 ms (13.5%)
Agent	profiling	1.199 s	144.546 ms (13.7%)
Total	tracing	10.938 s	-
Total	appsec	10.903 s	-34.822 ms (-0.3%)
Total	iast	11.181 s	243.448 ms (2.2%)
Total	profiling	10.869 s	-68.955 ms (-0.6%)

gantt
    title petclinic - break down per module: candidate=1.57.0-SNAPSHOT~36bc792951, baseline=1.57.0-SNAPSHOT~c714e59b1c

    dateFormat X
    axisFormat %s
section tracing
crashtracking [baseline] (1.489 ms) : 0, 1489
crashtracking [candidate] (1.484 ms) : 0, 1484
BytebuddyAgent [baseline] (707.211 ms) : 0, 707211
BytebuddyAgent [candidate] (708.373 ms) : 0, 708373
GlobalTracer [baseline] (249.802 ms) : 0, 249802
GlobalTracer [candidate] (249.959 ms) : 0, 249959
AppSec [baseline] (32.025 ms) : 0, 32025
AppSec [candidate] (32.139 ms) : 0, 32139
Debugger [baseline] (6.415 ms) : 0, 6415
Debugger [candidate] (6.41 ms) : 0, 6410
Remote Config [baseline] (675.236 µs) : 0, 675
Remote Config [candidate] (672.399 µs) : 0, 672
Telemetry [baseline] (15.499 ms) : 0, 15499
Telemetry [candidate] (16.245 ms) : 0, 16245
Flare Poller [baseline] (4.9 ms) : 0, 4900
Flare Poller [candidate] (4.091 ms) : 0, 4091
section appsec
crashtracking [baseline] (1.491 ms) : 0, 1491
crashtracking [candidate] (1.48 ms) : 0, 1480
BytebuddyAgent [baseline] (731.741 ms) : 0, 731741
BytebuddyAgent [candidate] (729.0 ms) : 0, 729000
GlobalTracer [baseline] (242.049 ms) : 0, 242049
GlobalTracer [candidate] (241.214 ms) : 0, 241214
IAST [baseline] (24.794 ms) : 0, 24794
IAST [candidate] (24.684 ms) : 0, 24684
AppSec [baseline] (175.459 ms) : 0, 175459
AppSec [candidate] (175.194 ms) : 0, 175194
Debugger [baseline] (6.317 ms) : 0, 6317
Debugger [candidate] (6.241 ms) : 0, 6241
Remote Config [baseline] (681.595 µs) : 0, 682
Remote Config [candidate] (675.115 µs) : 0, 675
Telemetry [baseline] (8.261 ms) : 0, 8261
Telemetry [candidate] (8.079 ms) : 0, 8079
Flare Poller [baseline] (3.939 ms) : 0, 3939
Flare Poller [candidate] (3.907 ms) : 0, 3907
section iast
crashtracking [baseline] (1.482 ms) : 0, 1482
crashtracking [candidate] (1.484 ms) : 0, 1484
BytebuddyAgent [baseline] (832.805 ms) : 0, 832805
BytebuddyAgent [candidate] (834.864 ms) : 0, 834864
GlobalTracer [baseline] (238.214 ms) : 0, 238214
GlobalTracer [candidate] (238.114 ms) : 0, 238114
IAST [baseline] (30.114 ms) : 0, 30114
IAST [candidate] (33.334 ms) : 0, 33334
AppSec [baseline] (31.556 ms) : 0, 31556
AppSec [candidate] (27.798 ms) : 0, 27798
Debugger [baseline] (6.114 ms) : 0, 6114
Debugger [candidate] (6.043 ms) : 0, 6043
Remote Config [baseline] (618.68 µs) : 0, 619
Remote Config [candidate] (619.721 µs) : 0, 620
Telemetry [baseline] (8.109 ms) : 0, 8109
Telemetry [candidate] (7.894 ms) : 0, 7894
Flare Poller [baseline] (10.847 ms) : 0, 10847
Flare Poller [candidate] (10.759 ms) : 0, 10759
section profiling
crashtracking [baseline] (1.434 ms) : 0, 1434
crashtracking [candidate] (1.436 ms) : 0, 1436
BytebuddyAgent [baseline] (738.758 ms) : 0, 738758
BytebuddyAgent [candidate] (734.0 ms) : 0, 734000
GlobalTracer [baseline] (224.149 ms) : 0, 224149
GlobalTracer [candidate] (222.722 ms) : 0, 222722
AppSec [baseline] (32.308 ms) : 0, 32308
AppSec [candidate] (32.147 ms) : 0, 32147
Debugger [baseline] (6.825 ms) : 0, 6825
Debugger [candidate] (7.565 ms) : 0, 7565
Remote Config [baseline] (690.447 µs) : 0, 690
Remote Config [candidate] (696.619 µs) : 0, 697
Telemetry [baseline] (16.248 ms) : 0, 16248
Telemetry [candidate] (15.557 ms) : 0, 15557
Flare Poller [baseline] (4.129 ms) : 0, 4129
Flare Poller [candidate] (4.159 ms) : 0, 4159
ProfilingAgent [baseline] (111.177 ms) : 0, 111177
ProfilingAgent [candidate] (111.224 ms) : 0, 111224
Profiling [baseline] (111.814 ms) : 0, 111814
Profiling [candidate] (111.845 ms) : 0, 111845

Startup time reports for insecure-bank

gantt
    title insecure-bank - global startup overhead: candidate=1.57.0-SNAPSHOT~36bc792951, baseline=1.57.0-SNAPSHOT~c714e59b1c

    dateFormat X
    axisFormat %s
section tracing
Agent [baseline] (1.05 s) : 0, 1049739
Total [baseline] (8.679 s) : 0, 8679158
Agent [candidate] (1.051 s) : 0, 1051008
Total [candidate] (8.694 s) : 0, 8694187
section iast
Agent [baseline] (1.196 s) : 0, 1195512
Total [baseline] (9.317 s) : 0, 9317077
Agent [candidate] (1.193 s) : 0, 1192921
Total [candidate] (9.308 s) : 0, 9307604

baseline results

Module	Variant	Duration	Δ tracing
Agent	tracing	1.05 s	-
Agent	iast	1.196 s	145.773 ms (13.9%)
Total	tracing	8.679 s	-
Total	iast	9.317 s	637.919 ms (7.4%)

candidate results

Module	Variant	Duration	Δ tracing
Agent	tracing	1.051 s	-
Agent	iast	1.193 s	141.913 ms (13.5%)
Total	tracing	8.694 s	-
Total	iast	9.308 s	613.417 ms (7.1%)

gantt
    title insecure-bank - break down per module: candidate=1.57.0-SNAPSHOT~36bc792951, baseline=1.57.0-SNAPSHOT~c714e59b1c

    dateFormat X
    axisFormat %s
section tracing
crashtracking [baseline] (1.481 ms) : 0, 1481
crashtracking [candidate] (1.474 ms) : 0, 1474
BytebuddyAgent [baseline] (705.895 ms) : 0, 705895
BytebuddyAgent [candidate] (706.416 ms) : 0, 706416
GlobalTracer [baseline] (248.272 ms) : 0, 248272
GlobalTracer [candidate] (248.991 ms) : 0, 248991
AppSec [baseline] (31.921 ms) : 0, 31921
AppSec [candidate] (32.018 ms) : 0, 32018
Debugger [baseline] (6.346 ms) : 0, 6346
Debugger [candidate] (6.351 ms) : 0, 6351
Remote Config [baseline] (669.284 µs) : 0, 669
Remote Config [candidate] (682.356 µs) : 0, 682
Telemetry [baseline] (16.107 ms) : 0, 16107
Telemetry [candidate] (15.281 ms) : 0, 15281
Flare Poller [baseline] (4.08 ms) : 0, 4080
Flare Poller [candidate] (4.824 ms) : 0, 4824
section iast
crashtracking [baseline] (1.52 ms) : 0, 1520
crashtracking [candidate] (1.487 ms) : 0, 1487
BytebuddyAgent [baseline] (833.029 ms) : 0, 833029
BytebuddyAgent [candidate] (830.755 ms) : 0, 830755
GlobalTracer [baseline] (238.503 ms) : 0, 238503
GlobalTracer [candidate] (238.152 ms) : 0, 238152
IAST [baseline] (29.27 ms) : 0, 29270
IAST [candidate] (28.453 ms) : 0, 28453
AppSec [baseline] (32.329 ms) : 0, 32329
AppSec [candidate] (33.502 ms) : 0, 33502
Debugger [baseline] (6.115 ms) : 0, 6115
Debugger [candidate] (6.018 ms) : 0, 6018
Remote Config [baseline] (613.328 µs) : 0, 613
Remote Config [candidate] (596.752 µs) : 0, 597
Telemetry [baseline] (8.061 ms) : 0, 8061
Telemetry [candidate] (8.021 ms) : 0, 8021
Flare Poller [baseline] (10.977 ms) : 0, 10977
Flare Poller [candidate] (10.733 ms) : 0, 10733

Load

Parameters

	Baseline	Candidate
baseline_or_candidate	baseline	candidate
git_branch	master	andrea.marziali/scopes
git_commit_date	1764709712	1764760649
git_commit_sha	`c714e59`	`36bc792`
release_version	1.57.0-SNAPSHOT~c714e59b1c	1.57.0-SNAPSHOT~36bc792951

See matching parameters

	Baseline	Candidate
application	insecure-bank	insecure-bank
ci_job_date	1764767072	1764767072
ci_job_id	1267863958	1267863958
ci_pipeline_id	84742973	84742973
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-ddjp6fjt 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-ddjp6fjt 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 19 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:insecure-bank:iast_GLOBAL:high_load	worse [+155.660µs; +259.195µs] or [+5.841%; +9.726%]	unsure [+53.108µs; +623.794µs] or [+0.679%; +7.974%]	unstable [-213.215op/s; +58.715op/s] or [-15.959%; +4.395%]	2.872ms	8.162ms	1258.781op/s	2.665ms	7.823ms	1336.031op/s
scenario:load:insecure-bank:iast_FULL:high_load	worse [+154.568µs; +430.728µs] or [+3.093%; +8.619%]	unsure [+224.286µs; +952.198µs] or [+1.883%; +7.994%]	unstable [-126.428op/s; +37.366op/s] or [-15.388%; +4.548%]	5.290ms	12.500ms	777.094op/s	4.997ms	11.912ms	821.625op/s

Request duration reports for insecure-bank

gantt
    title insecure-bank - request duration [CI 0.99] : candidate=1.57.0-SNAPSHOT~36bc792951, baseline=1.57.0-SNAPSHOT~c714e59b1c
    dateFormat X
    axisFormat %s
section baseline
no_agent (1.213 ms) : 1201, 1225
.   : milestone, 1213,
iast (3.271 ms) : 3225, 3316
.   : milestone, 3271,
iast_FULL (5.623 ms) : 5567, 5680
.   : milestone, 5623,
iast_GLOBAL (3.429 ms) : 3377, 3481
.   : milestone, 3429,
profiling (1.962 ms) : 1946, 1978
.   : milestone, 1962,
tracing (1.849 ms) : 1833, 1864
.   : milestone, 1849,
section candidate
no_agent (1.202 ms) : 1190, 1214
.   : milestone, 1202,
iast (3.271 ms) : 3226, 3317
.   : milestone, 3271,
iast_FULL (5.953 ms) : 5892, 6013
.   : milestone, 5953,
iast_GLOBAL (3.643 ms) : 3588, 3698
.   : milestone, 3643,
profiling (1.91 ms) : 1893, 1926
.   : milestone, 1910,
tracing (1.831 ms) : 1817, 1846
.   : milestone, 1831,

baseline results

Variant	Request duration [CI 0.99]	Δ no_agent
no_agent	1.213 ms [1.201 ms, 1.225 ms]	-
iast	3.271 ms [3.225 ms, 3.316 ms]	2.058 ms (169.7%)
iast_FULL	5.623 ms [5.567 ms, 5.68 ms]	4.411 ms (363.7%)
iast_GLOBAL	3.429 ms [3.377 ms, 3.481 ms]	2.216 ms (182.7%)
profiling	1.962 ms [1.946 ms, 1.978 ms]	748.854 µs (61.7%)
tracing	1.849 ms [1.833 ms, 1.864 ms]	635.84 µs (52.4%)

candidate results

Variant	Request duration [CI 0.99]	Δ no_agent
no_agent	1.202 ms [1.19 ms, 1.214 ms]	-
iast	3.271 ms [3.226 ms, 3.317 ms]	2.069 ms (172.1%)
iast_FULL	5.953 ms [5.892 ms, 6.013 ms]	4.751 ms (395.2%)
iast_GLOBAL	3.643 ms [3.588 ms, 3.698 ms]	2.441 ms (203.1%)
profiling	1.91 ms [1.893 ms, 1.926 ms]	707.519 µs (58.9%)
tracing	1.831 ms [1.817 ms, 1.846 ms]	629.352 µs (52.4%)

Request duration reports for petclinic

gantt
    title petclinic - request duration [CI 0.99] : candidate=1.57.0-SNAPSHOT~36bc792951, baseline=1.57.0-SNAPSHOT~c714e59b1c
    dateFormat X
    axisFormat %s
section baseline
no_agent (18.934 ms) : 18746, 19122
.   : milestone, 18934,
appsec (18.925 ms) : 18733, 19118
.   : milestone, 18925,
code_origins (18.034 ms) : 17852, 18216
.   : milestone, 18034,
iast (17.86 ms) : 17683, 18037
.   : milestone, 17860,
profiling (18.697 ms) : 18507, 18887
.   : milestone, 18697,
tracing (17.661 ms) : 17487, 17835
.   : milestone, 17661,
section candidate
no_agent (17.958 ms) : 17772, 18144
.   : milestone, 17958,
appsec (19.247 ms) : 19052, 19442
.   : milestone, 19247,
code_origins (18.028 ms) : 17849, 18207
.   : milestone, 18028,
iast (18.005 ms) : 17821, 18190
.   : milestone, 18005,
profiling (19.001 ms) : 18807, 19194
.   : milestone, 19001,
tracing (17.842 ms) : 17665, 18019
.   : milestone, 17842,

baseline results

Variant	Request duration [CI 0.99]	Δ no_agent
no_agent	18.934 ms [18.746 ms, 19.122 ms]	-
appsec	18.925 ms [18.733 ms, 19.118 ms]	-8.375 µs (-0.0%)
code_origins	18.034 ms [17.852 ms, 18.216 ms]	-899.793 µs (-4.8%)
iast	17.86 ms [17.683 ms, 18.037 ms]	-1.074 ms (-5.7%)
profiling	18.697 ms [18.507 ms, 18.887 ms]	-236.418 µs (-1.2%)
tracing	17.661 ms [17.487 ms, 17.835 ms]	-1.273 ms (-6.7%)

candidate results

Variant	Request duration [CI 0.99]	Δ no_agent
no_agent	17.958 ms [17.772 ms, 18.144 ms]	-
appsec	19.247 ms [19.052 ms, 19.442 ms]	1.289 ms (7.2%)
code_origins	18.028 ms [17.849 ms, 18.207 ms]	70.005 µs (0.4%)
iast	18.005 ms [17.821 ms, 18.19 ms]	47.42 µs (0.3%)
profiling	19.001 ms [18.807 ms, 19.194 ms]	1.043 ms (5.8%)
tracing	17.842 ms [17.665 ms, 18.019 ms]	-115.967 µs (-0.6%)

Dacapo

Parameters

	Baseline	Candidate
baseline_or_candidate	baseline	candidate
git_branch	master	andrea.marziali/scopes
git_commit_date	1764709712	1764760649
git_commit_sha	`c714e59`	`36bc792`
release_version	1.57.0-SNAPSHOT~c714e59b1c	1.57.0-SNAPSHOT~36bc792951

See matching parameters

	Baseline	Candidate
application	biojava	biojava
ci_job_date	1764763314	1764763314
ci_job_id	1267744779	1267744779
ci_pipeline_id	84742973	84742973
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-emskp1vh 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-emskp1vh 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 10 metrics, 2 unstable metrics.

Execution time for biojava

gantt
    title biojava - execution time [CI 0.99] : candidate=1.57.0-SNAPSHOT~36bc792951, baseline=1.57.0-SNAPSHOT~c714e59b1c
    dateFormat X
    axisFormat %s
section baseline
no_agent (15.028 s) : 15028000, 15028000
.   : milestone, 15028000,
appsec (14.54 s) : 14540000, 14540000
.   : milestone, 14540000,
iast (18.433 s) : 18433000, 18433000
.   : milestone, 18433000,
iast_GLOBAL (18.28 s) : 18280000, 18280000
.   : milestone, 18280000,
profiling (14.781 s) : 14781000, 14781000
.   : milestone, 14781000,
tracing (14.751 s) : 14751000, 14751000
.   : milestone, 14751000,
section candidate
no_agent (15.003 s) : 15003000, 15003000
.   : milestone, 15003000,
appsec (14.793 s) : 14793000, 14793000
.   : milestone, 14793000,
iast (18.028 s) : 18028000, 18028000
.   : milestone, 18028000,
iast_GLOBAL (18.26 s) : 18260000, 18260000
.   : milestone, 18260000,
profiling (14.764 s) : 14764000, 14764000
.   : milestone, 14764000,
tracing (14.595 s) : 14595000, 14595000
.   : milestone, 14595000,

baseline results

Variant	Execution Time [CI 0.99]	Δ no_agent
no_agent	15.028 s [15.028 s, 15.028 s]	-
appsec	14.54 s [14.54 s, 14.54 s]	-488.0 ms (-3.2%)
iast	18.433 s [18.433 s, 18.433 s]	3.405 s (22.7%)
iast_GLOBAL	18.28 s [18.28 s, 18.28 s]	3.252 s (21.6%)
profiling	14.781 s [14.781 s, 14.781 s]	-247.0 ms (-1.6%)
tracing	14.751 s [14.751 s, 14.751 s]	-277.0 ms (-1.8%)

candidate results

Variant	Execution Time [CI 0.99]	Δ no_agent
no_agent	15.003 s [15.003 s, 15.003 s]	-
appsec	14.793 s [14.793 s, 14.793 s]	-210.0 ms (-1.4%)
iast	18.028 s [18.028 s, 18.028 s]	3.025 s (20.2%)
iast_GLOBAL	18.26 s [18.26 s, 18.26 s]	3.257 s (21.7%)
profiling	14.764 s [14.764 s, 14.764 s]	-239.0 ms (-1.6%)
tracing	14.595 s [14.595 s, 14.595 s]	-408.0 ms (-2.7%)

Execution time for tomcat

gantt
    title tomcat - execution time [CI 0.99] : candidate=1.57.0-SNAPSHOT~36bc792951, baseline=1.57.0-SNAPSHOT~c714e59b1c
    dateFormat X
    axisFormat %s
section baseline
no_agent (1.486 ms) : 1474, 1497
.   : milestone, 1486,
appsec (2.467 ms) : 2415, 2519
.   : milestone, 2467,
iast (2.215 ms) : 2151, 2280
.   : milestone, 2215,
iast_GLOBAL (2.263 ms) : 2198, 2327
.   : milestone, 2263,
profiling (2.48 ms) : 2322, 2637
.   : milestone, 2480,
tracing (2.041 ms) : 1990, 2091
.   : milestone, 2041,
section candidate
no_agent (1.474 ms) : 1462, 1485
.   : milestone, 1474,
appsec (3.701 ms) : 3484, 3917
.   : milestone, 3701,
iast (2.214 ms) : 2151, 2278
.   : milestone, 2214,
iast_GLOBAL (2.259 ms) : 2194, 2324
.   : milestone, 2259,
profiling (2.059 ms) : 2007, 2111
.   : milestone, 2059,
tracing (2.042 ms) : 1991, 2092
.   : milestone, 2042,

baseline results

Variant	Execution Time [CI 0.99]	Δ no_agent
no_agent	1.486 ms [1.474 ms, 1.497 ms]	-
appsec	2.467 ms [2.415 ms, 2.519 ms]	981.289 µs (66.0%)
iast	2.215 ms [2.151 ms, 2.28 ms]	729.732 µs (49.1%)
iast_GLOBAL	2.263 ms [2.198 ms, 2.327 ms]	776.894 µs (52.3%)
profiling	2.48 ms [2.322 ms, 2.637 ms]	994.028 µs (66.9%)
tracing	2.041 ms [1.99 ms, 2.091 ms]	555.01 µs (37.4%)

candidate results

Variant	Execution Time [CI 0.99]	Δ no_agent
no_agent	1.474 ms [1.462 ms, 1.485 ms]	-
appsec	3.701 ms [3.484 ms, 3.917 ms]	2.227 ms (151.1%)
iast	2.214 ms [2.151 ms, 2.278 ms]	740.624 µs (50.3%)
iast_GLOBAL	2.259 ms [2.194 ms, 2.324 ms]	785.185 µs (53.3%)
profiling	2.059 ms [2.007 ms, 2.111 ms]	585.409 µs (39.7%)
tracing	2.042 ms [1.991 ms, 2.092 ms]	567.85 µs (38.5%)

Possibly use a fast path for accessing scope stacks

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mcculls reviewed Dec 3, 2025

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Possibly use a fast path for accessing scope stacks #10071

Possibly use a fast path for accessing scope stacks #10071

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amarziali commented Dec 3, 2025

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pr-commenter bot commented Dec 3, 2025 •

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		static final class ScopeStackThreadLocal extends ThreadLocal<ScopeStack> {

		private final ScopeStack[] fastStacks = new ScopeStack[2048]; // This should be tuned

Possibly use a fast path for accessing scope stacks #10071

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amarziali commented Dec 3, 2025

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mcculls Dec 3, 2025

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pr-commenter bot commented Dec 3, 2025 •

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