Enabling optimized map by default#10016

dougqh · 2025-11-21T19:38:25Z

What Does This Do

Enables the "optimized" TagMap by default

Motivation

OptimizedTagMap is special HashMap that is designed to be good at common tracer usage patterns.
OptimizedTagMap uses immutable TagMap.Entry-s

By using immutable TagMap.Entry-s...

Entry-s can be shared between TagMap.Ledger (a builder) and the constructed TagMap
Entry-s can be shared between TagMap instances when performing putAll

TagMap.Entry-s are also capable of storing primitives without boxing

All of these capabilities are intended to minimize the allocation done by the tracer when constructing Span-s

Additional Notes

Follow-up to

Reduce span construction overhead by switching to optimized TagMap #8589

Contributor Checklist

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Jira ticket: [PROJ-IDENT]

github-actions · 2025-11-21T19:38:36Z

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pr-commenter · 2025-11-25T18:44:23Z

Benchmarks

Startup

Parameters

	Baseline	Candidate
baseline_or_candidate	baseline	candidate
git_branch	master	dougqh/optimized-map-on-by-default
git_commit_date	1767984400	1767985033
git_commit_sha	`6d2b809`	`757a4c0`
release_version	1.59.0-SNAPSHOT~6d2b809818	1.57.0-SNAPSHOT~757a4c06cb

See matching parameters

	Baseline	Candidate
application	insecure-bank	insecure-bank
ci_job_date	1767986977	1767986977
ci_job_id	1340274147	1340274147
ci_pipeline_id	89992631	89992631
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-2-vgqx47p0 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-2-vgqx47p0 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 58 metrics, 7 unstable metrics.

Startup time reports for petclinic

gantt title petclinic - global startup overhead: candidate=1.57.0-SNAPSHOT~757a4c06cb, baseline=1.59.0-SNAPSHOT~6d2b809818 dateFormat X axisFormat %s section tracing Agent [baseline] (1.081 s) : 0, 1081249 Total [baseline] (10.728 s) : 0, 10728365 Agent [candidate] (1.088 s) : 0, 1088284 Total [candidate] (10.761 s) : 0, 10760571 section appsec Agent [baseline] (1.268 s) : 0, 1267773 Total [baseline] (10.896 s) : 0, 10895532 Agent [candidate] (1.271 s) : 0, 1271444 Total [candidate] (11.098 s) : 0, 11097784 section iast Agent [baseline] (1.225 s) : 0, 1225414 Total [baseline] (11.173 s) : 0, 11173445 Agent [candidate] (1.223 s) : 0, 1222777 Total [candidate] (11.196 s) : 0, 11196500 section profiling Agent [baseline] (1.208 s) : 0, 1207840 Total [baseline] (11.005 s) : 0, 11004810 Agent [candidate] (1.204 s) : 0, 1204067 Total [candidate] (10.85 s) : 0, 10849615

baseline results

Module	Variant	Duration	Δ tracing
Agent	tracing	1.081 s	-
Agent	appsec	1.268 s	186.524 ms (17.3%)
Agent	iast	1.225 s	144.165 ms (13.3%)
Agent	profiling	1.208 s	126.591 ms (11.7%)
Total	tracing	10.728 s	-
Total	appsec	10.896 s	167.167 ms (1.6%)
Total	iast	11.173 s	445.08 ms (4.1%)
Total	profiling	11.005 s	276.445 ms (2.6%)

candidate results

Module	Variant	Duration	Δ tracing
Agent	tracing	1.088 s	-
Agent	appsec	1.271 s	183.16 ms (16.8%)
Agent	iast	1.223 s	134.493 ms (12.4%)
Agent	profiling	1.204 s	115.783 ms (10.6%)
Total	tracing	10.761 s	-
Total	appsec	11.098 s	337.213 ms (3.1%)
Total	iast	11.196 s	435.929 ms (4.1%)
Total	profiling	10.85 s	89.044 ms (0.8%)

gantt title petclinic - break down per module: candidate=1.57.0-SNAPSHOT~757a4c06cb, baseline=1.59.0-SNAPSHOT~6d2b809818 dateFormat X axisFormat %s section tracing crashtracking [baseline] (1.179 ms) : 0, 1179 crashtracking [candidate] (1.201 ms) : 0, 1201 BytebuddyAgent [baseline] (649.249 ms) : 0, 649249 BytebuddyAgent [candidate] (653.476 ms) : 0, 653476 GlobalTracer [baseline] (281.609 ms) : 0, 281609 GlobalTracer [candidate] (283.193 ms) : 0, 283193 AppSec [baseline] (32.425 ms) : 0, 32425 AppSec [candidate] (32.877 ms) : 0, 32877 Debugger [baseline] (68.165 ms) : 0, 68165 Debugger [candidate] (68.644 ms) : 0, 68644 Remote Config [baseline] (603.298 µs) : 0, 603 Remote Config [candidate] (635.772 µs) : 0, 636 Telemetry [baseline] (8.84 ms) : 0, 8840 Telemetry [candidate] (8.979 ms) : 0, 8979 Flare Poller [baseline] (3.696 ms) : 0, 3696 Flare Poller [candidate] (3.751 ms) : 0, 3751 section appsec crashtracking [baseline] (1.197 ms) : 0, 1197 crashtracking [candidate] (1.194 ms) : 0, 1194 BytebuddyAgent [baseline] (692.765 ms) : 0, 692765 BytebuddyAgent [candidate] (694.185 ms) : 0, 694185 GlobalTracer [baseline] (258.858 ms) : 0, 258858 GlobalTracer [candidate] (259.098 ms) : 0, 259098 AppSec [baseline] (173.41 ms) : 0, 173410 AppSec [candidate] (173.556 ms) : 0, 173556 Debugger [baseline] (67.577 ms) : 0, 67577 Debugger [candidate] (69.298 ms) : 0, 69298 Remote Config [baseline] (774.163 µs) : 0, 774 Remote Config [candidate] (751.274 µs) : 0, 751 Telemetry [baseline] (9.293 ms) : 0, 9293 Telemetry [candidate] (9.484 ms) : 0, 9484 Flare Poller [baseline] (3.763 ms) : 0, 3763 Flare Poller [candidate] (3.846 ms) : 0, 3846 IAST [baseline] (24.673 ms) : 0, 24673 IAST [candidate] (24.575 ms) : 0, 24575 section iast crashtracking [baseline] (1.179 ms) : 0, 1179 crashtracking [candidate] (1.169 ms) : 0, 1169 BytebuddyAgent [baseline] (792.377 ms) : 0, 792377 BytebuddyAgent [candidate] (790.897 ms) : 0, 790897 GlobalTracer [baseline] (256.222 ms) : 0, 256222 GlobalTracer [candidate] (255.816 ms) : 0, 255816 AppSec [baseline] (34.38 ms) : 0, 34380 AppSec [candidate] (35.043 ms) : 0, 35043 Debugger [baseline] (66.078 ms) : 0, 66078 Debugger [candidate] (64.843 ms) : 0, 64843 Remote Config [baseline] (590.965 µs) : 0, 591 Remote Config [candidate] (571.954 µs) : 0, 572 Telemetry [baseline] (8.476 ms) : 0, 8476 Telemetry [candidate] (8.479 ms) : 0, 8479 Flare Poller [baseline] (3.489 ms) : 0, 3489 Flare Poller [candidate] (3.509 ms) : 0, 3509 IAST [baseline] (27.262 ms) : 0, 27262 IAST [candidate] (27.079 ms) : 0, 27079 section profiling crashtracking [baseline] (1.214 ms) : 0, 1214 crashtracking [candidate] (1.223 ms) : 0, 1223 BytebuddyAgent [baseline] (704.125 ms) : 0, 704125 BytebuddyAgent [candidate] (701.854 ms) : 0, 701854 GlobalTracer [baseline] (221.174 ms) : 0, 221174 GlobalTracer [candidate] (220.975 ms) : 0, 220975 AppSec [baseline] (32.568 ms) : 0, 32568 AppSec [candidate] (32.24 ms) : 0, 32240 Debugger [baseline] (68.297 ms) : 0, 68297 Debugger [candidate] (67.737 ms) : 0, 67737 Remote Config [baseline] (659.569 µs) : 0, 660 Remote Config [candidate] (654.599 µs) : 0, 655 Telemetry [baseline] (8.851 ms) : 0, 8851 Telemetry [candidate] (8.814 ms) : 0, 8814 Flare Poller [baseline] (3.687 ms) : 0, 3687 Flare Poller [candidate] (4.306 ms) : 0, 4306 ProfilingAgent [baseline] (97.362 ms) : 0, 97362 ProfilingAgent [candidate] (96.463 ms) : 0, 96463 Profiling [baseline] (97.953 ms) : 0, 97953 Profiling [candidate] (97.052 ms) : 0, 97052

Startup time reports for insecure-bank

gantt title insecure-bank - global startup overhead: candidate=1.57.0-SNAPSHOT~757a4c06cb, baseline=1.59.0-SNAPSHOT~6d2b809818 dateFormat X axisFormat %s section tracing Agent [baseline] (1.09 s) : 0, 1089736 Total [baseline] (8.739 s) : 0, 8738654 Agent [candidate] (1.082 s) : 0, 1081957 Total [candidate] (8.752 s) : 0, 8751650 section iast Agent [baseline] (1.224 s) : 0, 1224009 Total [baseline] (9.266 s) : 0, 9265528 Agent [candidate] (1.222 s) : 0, 1221745 Total [candidate] (9.298 s) : 0, 9297592

baseline results

Module	Variant	Duration	Δ tracing
Agent	tracing	1.09 s	-
Agent	iast	1.224 s	134.273 ms (12.3%)
Total	tracing	8.739 s	-
Total	iast	9.266 s	526.874 ms (6.0%)

candidate results

Module	Variant	Duration	Δ tracing
Agent	tracing	1.082 s	-
Agent	iast	1.222 s	139.788 ms (12.9%)
Total	tracing	8.752 s	-
Total	iast	9.298 s	545.942 ms (6.2%)

gantt title insecure-bank - break down per module: candidate=1.57.0-SNAPSHOT~757a4c06cb, baseline=1.59.0-SNAPSHOT~6d2b809818 dateFormat X axisFormat %s section tracing crashtracking [baseline] (1.194 ms) : 0, 1194 crashtracking [candidate] (1.176 ms) : 0, 1176 BytebuddyAgent [baseline] (655.787 ms) : 0, 655787 BytebuddyAgent [candidate] (650.171 ms) : 0, 650171 GlobalTracer [baseline] (283.554 ms) : 0, 283554 GlobalTracer [candidate] (281.917 ms) : 0, 281917 AppSec [baseline] (32.792 ms) : 0, 32792 AppSec [candidate] (32.534 ms) : 0, 32534 Debugger [baseline] (67.374 ms) : 0, 67374 Debugger [candidate] (67.352 ms) : 0, 67352 Remote Config [baseline] (609.473 µs) : 0, 609 Remote Config [candidate] (630.458 µs) : 0, 630 Telemetry [baseline] (8.966 ms) : 0, 8966 Telemetry [candidate] (8.96 ms) : 0, 8960 Flare Poller [baseline] (3.754 ms) : 0, 3754 Flare Poller [candidate] (3.793 ms) : 0, 3793 section iast crashtracking [baseline] (1.182 ms) : 0, 1182 crashtracking [candidate] (1.172 ms) : 0, 1172 BytebuddyAgent [baseline] (792.155 ms) : 0, 792155 BytebuddyAgent [candidate] (790.792 ms) : 0, 790792 GlobalTracer [baseline] (256.008 ms) : 0, 256008 GlobalTracer [candidate] (256.073 ms) : 0, 256073 AppSec [baseline] (35.099 ms) : 0, 35099 AppSec [candidate] (34.282 ms) : 0, 34282 Debugger [baseline] (64.109 ms) : 0, 64109 Debugger [candidate] (64.588 ms) : 0, 64588 Remote Config [baseline] (608.255 µs) : 0, 608 Remote Config [candidate] (566.339 µs) : 0, 566 Telemetry [baseline] (8.547 ms) : 0, 8547 Telemetry [candidate] (8.434 ms) : 0, 8434 Flare Poller [baseline] (3.662 ms) : 0, 3662 Flare Poller [candidate] (3.517 ms) : 0, 3517 IAST [baseline] (27.144 ms) : 0, 27144 IAST [candidate] (27.03 ms) : 0, 27030

Load

Parameters

	Baseline	Candidate
baseline_or_candidate	baseline	candidate
git_branch	master	dougqh/optimized-map-on-by-default
git_commit_date	1767984400	1767985033
git_commit_sha	`6d2b809`	`757a4c0`
release_version	1.59.0-SNAPSHOT~6d2b809818	1.57.0-SNAPSHOT~757a4c06cb

See matching parameters

	Baseline	Candidate
application	insecure-bank	insecure-bank
ci_job_date	1767987473	1767987473
ci_job_id	1340274151	1340274151
ci_pipeline_id	89992631	89992631
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-1-80wwiypu 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-1-80wwiypu 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 2 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:insecure-bank:iast_GLOBAL:high_load	better [-243.897µs; -118.387µs] or [-8.080%; -3.922%]	unsure [-723.782µs; -146.365µs] or [-8.601%; -1.739%]	unstable [-72.555op/s; +204.368op/s] or [-6.000%; +16.900%]	2.838ms	7.980ms	1275.188op/s	3.019ms	8.415ms	1209.281op/s
scenario:load:petclinic:no_agent:high_load	worse [+1.231ms; +2.292ms] or [+7.387%; +13.755%]	worse [+1.731ms; +4.326ms] or [+6.166%; +15.412%]	unstable [-50.126op/s; -0.999op/s] or [-18.458%; -0.368%]	18.426ms	31.096ms	246.000op/s	16.665ms	28.068ms	271.562op/s

Request duration reports for petclinic

gantt title petclinic - request duration [CI 0.99] : candidate=1.57.0-SNAPSHOT~757a4c06cb, baseline=1.59.0-SNAPSHOT~6d2b809818 dateFormat X axisFormat %s section baseline no_agent (17.181 ms) : 17012, 17351 . : milestone, 17181, appsec (18.593 ms) : 18405, 18781 . : milestone, 18593, code_origins (17.608 ms) : 17434, 17781 . : milestone, 17608, iast (17.501 ms) : 17328, 17673 . : milestone, 17501, profiling (18.781 ms) : 18589, 18973 . : milestone, 18781, tracing (17.699 ms) : 17525, 17872 . : milestone, 17699, section candidate no_agent (18.977 ms) : 18783, 19170 . : milestone, 18977, appsec (18.985 ms) : 18795, 19175 . : milestone, 18985, code_origins (17.801 ms) : 17623, 17979 . : milestone, 17801, iast (17.656 ms) : 17482, 17831 . : milestone, 17656, profiling (18.729 ms) : 18541, 18916 . : milestone, 18729, tracing (17.449 ms) : 17276, 17623 . : milestone, 17449,

baseline results

Variant	Request duration [CI 0.99]	Δ no_agent
no_agent	17.181 ms [17.012 ms, 17.351 ms]	-
appsec	18.593 ms [18.405 ms, 18.781 ms]	1.411 ms (8.2%)
code_origins	17.608 ms [17.434 ms, 17.781 ms]	426.13 µs (2.5%)
iast	17.501 ms [17.328 ms, 17.673 ms]	319.324 µs (1.9%)
profiling	18.781 ms [18.589 ms, 18.973 ms]	1.6 ms (9.3%)
tracing	17.699 ms [17.525 ms, 17.872 ms]	517.207 µs (3.0%)

candidate results

Variant	Request duration [CI 0.99]	Δ no_agent
no_agent	18.977 ms [18.783 ms, 19.17 ms]	-
appsec	18.985 ms [18.795 ms, 19.175 ms]	7.884 µs (0.0%)
code_origins	17.801 ms [17.623 ms, 17.979 ms]	-1.176 ms (-6.2%)
iast	17.656 ms [17.482 ms, 17.831 ms]	-1.321 ms (-7.0%)
profiling	18.729 ms [18.541 ms, 18.916 ms]	-248.263 µs (-1.3%)
tracing	17.449 ms [17.276 ms, 17.623 ms]	-1.528 ms (-8.0%)

Request duration reports for insecure-bank

gantt title insecure-bank - request duration [CI 0.99] : candidate=1.57.0-SNAPSHOT~757a4c06cb, baseline=1.59.0-SNAPSHOT~6d2b809818 dateFormat X axisFormat %s section baseline no_agent (1.187 ms) : 1175, 1199 . : milestone, 1187, iast (3.267 ms) : 3224, 3309 . : milestone, 3267, iast_FULL (5.783 ms) : 5725, 5840 . : milestone, 5783, iast_GLOBAL (3.796 ms) : 3739, 3854 . : milestone, 3796, profiling (2.063 ms) : 2045, 2082 . : milestone, 2063, tracing (1.795 ms) : 1779, 1810 . : milestone, 1795, section candidate no_agent (1.201 ms) : 1189, 1213 . : milestone, 1201, iast (3.198 ms) : 3150, 3246 . : milestone, 3198, iast_FULL (5.63 ms) : 5574, 5686 . : milestone, 5630, iast_GLOBAL (3.596 ms) : 3541, 3651 . : milestone, 3596, profiling (1.975 ms) : 1957, 1993 . : milestone, 1975, tracing (1.757 ms) : 1743, 1770 . : milestone, 1757,

baseline results

Variant	Request duration [CI 0.99]	Δ no_agent
no_agent	1.187 ms [1.175 ms, 1.199 ms]	-
iast	3.267 ms [3.224 ms, 3.309 ms]	2.08 ms (175.2%)
iast_FULL	5.783 ms [5.725 ms, 5.84 ms]	4.596 ms (387.2%)
iast_GLOBAL	3.796 ms [3.739 ms, 3.854 ms]	2.609 ms (219.9%)
profiling	2.063 ms [2.045 ms, 2.082 ms]	876.493 µs (73.8%)
tracing	1.795 ms [1.779 ms, 1.81 ms]	608.004 µs (51.2%)

candidate results

Variant	Request duration [CI 0.99]	Δ no_agent
no_agent	1.201 ms [1.189 ms, 1.213 ms]	-
iast	3.198 ms [3.15 ms, 3.246 ms]	1.997 ms (166.3%)
iast_FULL	5.63 ms [5.574 ms, 5.686 ms]	4.429 ms (368.9%)
iast_GLOBAL	3.596 ms [3.541 ms, 3.651 ms]	2.395 ms (199.5%)
profiling	1.975 ms [1.957 ms, 1.993 ms]	774.49 µs (64.5%)
tracing	1.757 ms [1.743 ms, 1.77 ms]	555.7 µs (46.3%)

Dacapo

Parameters

	Baseline	Candidate
baseline_or_candidate	baseline	candidate
git_branch	master	dougqh/optimized-map-on-by-default
git_commit_date	1767984400	1767985033
git_commit_sha	`6d2b809`	`757a4c0`
release_version	1.59.0-SNAPSHOT~6d2b809818	1.57.0-SNAPSHOT~757a4c06cb

See matching parameters

	Baseline	Candidate
application	biojava	biojava
ci_job_date	1767987197	1767987197
ci_job_id	1340274154	1340274154
ci_pipeline_id	89992631	89992631
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-2-hdmhmnkk 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-2-hdmhmnkk 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 biojava

gantt title biojava - execution time [CI 0.99] : candidate=1.57.0-SNAPSHOT~757a4c06cb, baseline=1.59.0-SNAPSHOT~6d2b809818 dateFormat X axisFormat %s section baseline no_agent (15.542 s) : 15542000, 15542000 . : milestone, 15542000, appsec (14.682 s) : 14682000, 14682000 . : milestone, 14682000, iast (18.21 s) : 18210000, 18210000 . : milestone, 18210000, iast_GLOBAL (17.827 s) : 17827000, 17827000 . : milestone, 17827000, profiling (14.851 s) : 14851000, 14851000 . : milestone, 14851000, tracing (14.962 s) : 14962000, 14962000 . : milestone, 14962000, section candidate no_agent (15.432 s) : 15432000, 15432000 . : milestone, 15432000, appsec (14.684 s) : 14684000, 14684000 . : milestone, 14684000, iast (17.99 s) : 17990000, 17990000 . : milestone, 17990000, iast_GLOBAL (17.881 s) : 17881000, 17881000 . : milestone, 17881000, profiling (15.248 s) : 15248000, 15248000 . : milestone, 15248000, tracing (14.718 s) : 14718000, 14718000 . : milestone, 14718000,

baseline results

Variant	Execution Time [CI 0.99]	Δ no_agent
no_agent	15.542 s [15.542 s, 15.542 s]	-
appsec	14.682 s [14.682 s, 14.682 s]	-860.0 ms (-5.5%)
iast	18.21 s [18.21 s, 18.21 s]	2.668 s (17.2%)
iast_GLOBAL	17.827 s [17.827 s, 17.827 s]	2.285 s (14.7%)
profiling	14.851 s [14.851 s, 14.851 s]	-691.0 ms (-4.4%)
tracing	14.962 s [14.962 s, 14.962 s]	-580.0 ms (-3.7%)

candidate results

Variant	Execution Time [CI 0.99]	Δ no_agent
no_agent	15.432 s [15.432 s, 15.432 s]	-
appsec	14.684 s [14.684 s, 14.684 s]	-748.0 ms (-4.8%)
iast	17.99 s [17.99 s, 17.99 s]	2.558 s (16.6%)
iast_GLOBAL	17.881 s [17.881 s, 17.881 s]	2.449 s (15.9%)
profiling	15.248 s [15.248 s, 15.248 s]	-184.0 ms (-1.2%)
tracing	14.718 s [14.718 s, 14.718 s]	-714.0 ms (-4.6%)

Execution time for tomcat

gantt title tomcat - execution time [CI 0.99] : candidate=1.57.0-SNAPSHOT~757a4c06cb, baseline=1.59.0-SNAPSHOT~6d2b809818 dateFormat X axisFormat %s section baseline no_agent (1.474 ms) : 1463, 1486 . : milestone, 1474, appsec (3.739 ms) : 3519, 3960 . : milestone, 3739, iast (2.215 ms) : 2151, 2280 . : milestone, 2215, iast_GLOBAL (2.257 ms) : 2192, 2323 . : milestone, 2257, profiling (2.087 ms) : 2032, 2142 . : milestone, 2087, tracing (2.06 ms) : 2008, 2111 . : milestone, 2060, section candidate no_agent (1.475 ms) : 1464, 1487 . : milestone, 1475, appsec (3.709 ms) : 3492, 3927 . : milestone, 3709, iast (2.207 ms) : 2142, 2272 . : milestone, 2207, iast_GLOBAL (2.254 ms) : 2188, 2320 . : milestone, 2254, profiling (2.07 ms) : 2017, 2123 . : milestone, 2070, tracing (2.048 ms) : 1997, 2100 . : milestone, 2048,

baseline results

Variant	Execution Time [CI 0.99]	Δ no_agent
no_agent	1.474 ms [1.463 ms, 1.486 ms]	-
appsec	3.739 ms [3.519 ms, 3.96 ms]	2.265 ms (153.6%)
iast	2.215 ms [2.151 ms, 2.28 ms]	741.023 µs (50.3%)
iast_GLOBAL	2.257 ms [2.192 ms, 2.323 ms]	783.167 µs (53.1%)
profiling	2.087 ms [2.032 ms, 2.142 ms]	612.812 µs (41.6%)
tracing	2.06 ms [2.008 ms, 2.111 ms]	585.42 µs (39.7%)

candidate results

Variant	Execution Time [CI 0.99]	Δ no_agent
no_agent	1.475 ms [1.464 ms, 1.487 ms]	-
appsec	3.709 ms [3.492 ms, 3.927 ms]	2.234 ms (151.4%)
iast	2.207 ms [2.142 ms, 2.272 ms]	731.586 µs (49.6%)
iast_GLOBAL	2.254 ms [2.188 ms, 2.32 ms]	778.808 µs (52.8%)
profiling	2.07 ms [2.017 ms, 2.123 ms]	594.931 µs (40.3%)
tracing	2.048 ms [1.997 ms, 2.1 ms]	572.919 µs (38.8%)

AlexeyKuznetsov-DD · 2025-12-15T22:12:34Z

internal-api/src/main/java/datadog/trace/api/Config.java


-this.optimizedMapEnabled =
-configProvider.getBoolean(GeneralConfig.OPTIMIZED_MAP_ENABLED, false);
+this.optimizedMapEnabled = configProvider.getBoolean(GeneralConfig.OPTIMIZED_MAP_ENABLED, true);


Just curious, if it is a config change, do we need to update some other place too?
@mhlidd Could you check this PR too?

I think that only applies if we introduce a config variable. This config has been in place for some time now.

Enabling optimized map by default
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dougqh requested a review from a team as a code owner November 21, 2025 19:38

dougqh requested a review from PerfectSlayer November 21, 2025 19:38

dougqh added comp: core Tracer core tag: performance Performance related changes type: enhancement Enhancements and improvements labels Nov 21, 2025

bric3 approved these changes Nov 24, 2025
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Merge branch 'master' into dougqh/optimized-map-on-by-default
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Merge branch 'master' into dougqh/optimized-map-on-by-default
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dougqh temporarily deployed to ci-build December 9, 2025 15:29 — with GitHub Actions Inactive

Merge branch 'master' into dougqh/optimized-map-on-by-default
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dougqh temporarily deployed to ci-build December 9, 2025 18:55 — with GitHub Actions Inactive

Merge branch 'master' into dougqh/optimized-map-on-by-default
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dougqh temporarily deployed to ci-build December 9, 2025 20:57 — with GitHub Actions Inactive

AlexeyKuznetsov-DD reviewed Dec 15, 2025
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Merge branch 'master' into dougqh/optimized-map-on-by-default
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dougqh temporarily deployed to ci-build January 9, 2026 14:57 — with GitHub Actions Inactive

AlexeyKuznetsov-DD approved these changes Jan 9, 2026
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Merge branch 'master' into dougqh/optimized-map-on-by-default
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dougqh temporarily deployed to ci-build January 9, 2026 18:57 — with GitHub Actions Inactive

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Enabling optimized map by default#10016

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