iframe-proxy

AlexeyKuznetsov-DD · 2026-03-10T23:38:05Z

What Does This Do

Implements support for the Datadog Agent Efficient Trace Payload Protocol v1.0 (v1.0/traces endpoint) in the Java tracer.
Introduces TraceMapperV1, a new serializer that encodes traces in the v1 msgpack format with a flat attribute model, string table deduplication, and typed attribute values.
Adds a ProtocolVersion enum to cleanly represent v0.4, v0.5, and v1.0 protocols including their fallback endpoint chains.
Updates DDAgentFeaturesDiscovery to probe endpoints based on the configured protocol version.

Motivation

Protocol v1 is a more efficient wire format: it deduplicates repeated strings via a string table, uses typed attribute values (string/bool/float/int/bytes/array). This reduces payload size and provides a cleaner foundation for future span model evolution. The implementation falls back gracefully to v0.4 when the agent does not advertise v1 support.

Additional Notes

Protocol v1 spec
System test passed both on GitHub and GitLab.

pr-commenter · 2026-03-11T00:24:38Z

Benchmarks

Startup

Parameters

	Baseline	Candidate
baseline_or_candidate	baseline	candidate
git_branch	master	alexeyk/protocol-v1-1
git_commit_date	1776899365	1776953664
git_commit_sha	`8569434`	`c1d9b0a`
release_version	1.62.0-SNAPSHOT~8569434beb	1.61.0-SNAPSHOT~c1d9b0a4df

See matching parameters

	Baseline	Candidate
application	insecure-bank	insecure-bank
ci_job_date	1776955418	1776955418
ci_job_id	1624266359	1624266359
ci_pipeline_id	109311800	109311800
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-0-6n1e6vg6 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-0-6n1e6vg6 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 59 metrics, 12 unstable metrics.

Startup time reports for petclinic

gantt
    title petclinic - global startup overhead: candidate=1.61.0-SNAPSHOT~c1d9b0a4df, baseline=1.62.0-SNAPSHOT~8569434beb

    dateFormat X
    axisFormat %s
section tracing
Agent [baseline] (1.065 s) : 0, 1065131
Total [baseline] (11.085 s) : 0, 11085139
Agent [candidate] (1.06 s) : 0, 1060003
Total [candidate] (11.036 s) : 0, 11035566
section appsec
Agent [baseline] (1.27 s) : 0, 1269552
Total [baseline] (11.009 s) : 0, 11008648
Agent [candidate] (1.26 s) : 0, 1259920
Total [candidate] (11.029 s) : 0, 11028532
section iast
Agent [baseline] (1.231 s) : 0, 1230698
Total [baseline] (11.372 s) : 0, 11371663
Agent [candidate] (1.239 s) : 0, 1239369
Total [candidate] (11.337 s) : 0, 11337107
section profiling
Agent [baseline] (1.191 s) : 0, 1190752
Total [baseline] (11.087 s) : 0, 11087424
Agent [candidate] (1.183 s) : 0, 1183136
Total [candidate] (11.086 s) : 0, 11086317

baseline results

Module	Variant	Duration	Δ tracing
Agent	tracing	1.065 s	-
Agent	appsec	1.27 s	204.421 ms (19.2%)
Agent	iast	1.231 s	165.567 ms (15.5%)
Agent	profiling	1.191 s	125.621 ms (11.8%)
Total	tracing	11.085 s	-
Total	appsec	11.009 s	-76.491 ms (-0.7%)
Total	iast	11.372 s	286.524 ms (2.6%)
Total	profiling	11.087 s	2.285 ms (0.0%)

candidate results

Module	Variant	Duration	Δ tracing
Agent	tracing	1.06 s	-
Agent	appsec	1.26 s	199.917 ms (18.9%)
Agent	iast	1.239 s	179.367 ms (16.9%)
Agent	profiling	1.183 s	123.133 ms (11.6%)
Total	tracing	11.036 s	-
Total	appsec	11.029 s	-7.034 ms (-0.1%)
Total	iast	11.337 s	301.542 ms (2.7%)
Total	profiling	11.086 s	50.752 ms (0.5%)

gantt
    title petclinic - break down per module: candidate=1.61.0-SNAPSHOT~c1d9b0a4df, baseline=1.62.0-SNAPSHOT~8569434beb

    dateFormat X
    axisFormat %s
section tracing
crashtracking [baseline] (1.238 ms) : 0, 1238
crashtracking [candidate] (1.216 ms) : 0, 1216
BytebuddyAgent [baseline] (637.209 ms) : 0, 637209
BytebuddyAgent [candidate] (634.387 ms) : 0, 634387
AgentMeter [baseline] (29.8 ms) : 0, 29800
AgentMeter [candidate] (29.488 ms) : 0, 29488
GlobalTracer [baseline] (251.431 ms) : 0, 251431
GlobalTracer [candidate] (248.841 ms) : 0, 248841
AppSec [baseline] (32.586 ms) : 0, 32586
AppSec [candidate] (32.302 ms) : 0, 32302
Debugger [baseline] (60.436 ms) : 0, 60436
Debugger [candidate] (60.605 ms) : 0, 60605
Remote Config [baseline] (611.95 µs) : 0, 612
Remote Config [candidate] (595.256 µs) : 0, 595
Telemetry [baseline] (8.091 ms) : 0, 8091
Telemetry [candidate] (8.847 ms) : 0, 8847
Flare Poller [baseline] (7.406 ms) : 0, 7406
Flare Poller [candidate] (7.515 ms) : 0, 7515
section appsec
crashtracking [baseline] (1.232 ms) : 0, 1232
crashtracking [candidate] (1.231 ms) : 0, 1231
BytebuddyAgent [baseline] (679.443 ms) : 0, 679443
BytebuddyAgent [candidate] (673.361 ms) : 0, 673361
AgentMeter [baseline] (12.207 ms) : 0, 12207
AgentMeter [candidate] (12.163 ms) : 0, 12163
GlobalTracer [baseline] (250.595 ms) : 0, 250595
GlobalTracer [candidate] (248.988 ms) : 0, 248988
IAST [baseline] (24.468 ms) : 0, 24468
IAST [candidate] (24.158 ms) : 0, 24158
AppSec [baseline] (186.051 ms) : 0, 186051
AppSec [candidate] (186.972 ms) : 0, 186972
Debugger [baseline] (66.927 ms) : 0, 66927
Debugger [candidate] (64.841 ms) : 0, 64841
Remote Config [baseline] (578.11 µs) : 0, 578
Remote Config [candidate] (568.578 µs) : 0, 569
Telemetry [baseline] (7.973 ms) : 0, 7973
Telemetry [candidate] (7.79 ms) : 0, 7790
Flare Poller [baseline] (3.467 ms) : 0, 3467
Flare Poller [candidate] (3.445 ms) : 0, 3445
section iast
crashtracking [baseline] (1.221 ms) : 0, 1221
crashtracking [candidate] (1.23 ms) : 0, 1230
BytebuddyAgent [baseline] (808.93 ms) : 0, 808930
BytebuddyAgent [candidate] (814.796 ms) : 0, 814796
AgentMeter [baseline] (11.462 ms) : 0, 11462
AgentMeter [candidate] (11.516 ms) : 0, 11516
GlobalTracer [baseline] (239.081 ms) : 0, 239081
GlobalTracer [candidate] (240.298 ms) : 0, 240298
IAST [baseline] (30.626 ms) : 0, 30626
IAST [candidate] (29.944 ms) : 0, 29944
AppSec [baseline] (28.265 ms) : 0, 28265
AppSec [candidate] (28.649 ms) : 0, 28649
Debugger [baseline] (63.43 ms) : 0, 63430
Debugger [candidate] (65.007 ms) : 0, 65007
Remote Config [baseline] (539.07 µs) : 0, 539
Remote Config [candidate] (541.654 µs) : 0, 542
Telemetry [baseline] (7.689 ms) : 0, 7689
Telemetry [candidate] (7.789 ms) : 0, 7789
Flare Poller [baseline] (3.363 ms) : 0, 3363
Flare Poller [candidate] (3.46 ms) : 0, 3460
section profiling
crashtracking [baseline] (1.197 ms) : 0, 1197
crashtracking [candidate] (1.18 ms) : 0, 1180
BytebuddyAgent [baseline] (695.205 ms) : 0, 695205
BytebuddyAgent [candidate] (691.17 ms) : 0, 691170
AgentMeter [baseline] (9.022 ms) : 0, 9022
AgentMeter [candidate] (8.984 ms) : 0, 8984
GlobalTracer [baseline] (208.975 ms) : 0, 208975
GlobalTracer [candidate] (207.248 ms) : 0, 207248
AppSec [baseline] (32.801 ms) : 0, 32801
AppSec [candidate] (32.572 ms) : 0, 32572
Debugger [baseline] (66.011 ms) : 0, 66011
Debugger [candidate] (65.276 ms) : 0, 65276
Remote Config [baseline] (592.756 µs) : 0, 593
Remote Config [candidate] (567.485 µs) : 0, 567
Telemetry [baseline] (7.848 ms) : 0, 7848
Telemetry [candidate] (7.801 ms) : 0, 7801
Flare Poller [baseline] (3.491 ms) : 0, 3491
Flare Poller [candidate] (3.461 ms) : 0, 3461
ProfilingAgent [baseline] (93.829 ms) : 0, 93829
ProfilingAgent [candidate] (93.399 ms) : 0, 93399
Profiling [baseline] (94.398 ms) : 0, 94398
Profiling [candidate] (93.961 ms) : 0, 93961

Startup time reports for insecure-bank

gantt
    title insecure-bank - global startup overhead: candidate=1.61.0-SNAPSHOT~c1d9b0a4df, baseline=1.62.0-SNAPSHOT~8569434beb

    dateFormat X
    axisFormat %s
section tracing
Agent [baseline] (1.059 s) : 0, 1059412
Total [baseline] (8.883 s) : 0, 8882515
Agent [candidate] (1.056 s) : 0, 1056185
Total [candidate] (8.837 s) : 0, 8836871
section iast
Agent [baseline] (1.233 s) : 0, 1232916
Total [baseline] (9.534 s) : 0, 9533677
Agent [candidate] (1.237 s) : 0, 1237393
Total [candidate] (9.608 s) : 0, 9608234

baseline results

Module	Variant	Duration	Δ tracing
Agent	tracing	1.059 s	-
Agent	iast	1.233 s	173.504 ms (16.4%)
Total	tracing	8.883 s	-
Total	iast	9.534 s	651.162 ms (7.3%)

candidate results

Module	Variant	Duration	Δ tracing
Agent	tracing	1.056 s	-
Agent	iast	1.237 s	181.207 ms (17.2%)
Total	tracing	8.837 s	-
Total	iast	9.608 s	771.363 ms (8.7%)

gantt
    title insecure-bank - break down per module: candidate=1.61.0-SNAPSHOT~c1d9b0a4df, baseline=1.62.0-SNAPSHOT~8569434beb

    dateFormat X
    axisFormat %s
section tracing
crashtracking [baseline] (1.228 ms) : 0, 1228
crashtracking [candidate] (1.23 ms) : 0, 1230
BytebuddyAgent [baseline] (633.829 ms) : 0, 633829
BytebuddyAgent [candidate] (632.845 ms) : 0, 632845
AgentMeter [baseline] (29.515 ms) : 0, 29515
AgentMeter [candidate] (29.224 ms) : 0, 29224
GlobalTracer [baseline] (250.365 ms) : 0, 250365
GlobalTracer [candidate] (248.328 ms) : 0, 248328
AppSec [baseline] (32.625 ms) : 0, 32625
AppSec [candidate] (32.307 ms) : 0, 32307
Debugger [baseline] (59.432 ms) : 0, 59432
Debugger [candidate] (59.405 ms) : 0, 59405
Remote Config [baseline] (600.127 µs) : 0, 600
Remote Config [candidate] (597.113 µs) : 0, 597
Telemetry [baseline] (8.125 ms) : 0, 8125
Telemetry [candidate] (7.984 ms) : 0, 7984
Flare Poller [baseline] (7.477 ms) : 0, 7477
Flare Poller [candidate] (8.085 ms) : 0, 8085
section iast
crashtracking [baseline] (1.236 ms) : 0, 1236
crashtracking [candidate] (1.237 ms) : 0, 1237
BytebuddyAgent [baseline] (810.213 ms) : 0, 810213
BytebuddyAgent [candidate] (814.266 ms) : 0, 814266
AgentMeter [baseline] (11.432 ms) : 0, 11432
AgentMeter [candidate] (11.479 ms) : 0, 11479
GlobalTracer [baseline] (239.199 ms) : 0, 239199
GlobalTracer [candidate] (239.731 ms) : 0, 239731
IAST [baseline] (30.207 ms) : 0, 30207
IAST [candidate] (30.065 ms) : 0, 30065
AppSec [baseline] (30.331 ms) : 0, 30331
AppSec [candidate] (26.662 ms) : 0, 26662
Debugger [baseline] (62.367 ms) : 0, 62367
Debugger [candidate] (65.17 ms) : 0, 65170
Remote Config [baseline] (532.495 µs) : 0, 532
Remote Config [candidate] (542.236 µs) : 0, 542
Telemetry [baseline] (7.758 ms) : 0, 7758
Telemetry [candidate] (7.847 ms) : 0, 7847
Flare Poller [baseline] (3.449 ms) : 0, 3449
Flare Poller [candidate] (3.417 ms) : 0, 3417

Load

Parameters

	Baseline	Candidate
baseline_or_candidate	baseline	candidate
git_branch	master	alexeyk/protocol-v1-1
git_commit_date	1776899365	1776953664
git_commit_sha	`8569434`	`c1d9b0a`
release_version	1.62.0-SNAPSHOT~8569434beb	1.61.0-SNAPSHOT~c1d9b0a4df

See matching parameters

	Baseline	Candidate
application	insecure-bank	insecure-bank
ci_job_date	1776955899	1776955899
ci_job_id	1624266363	1624266363
ci_pipeline_id	109311800	109311800
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-xjqe10qx 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-xjqe10qx 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 20 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	better [-1.576ms; -0.719ms] or [-8.552%; -3.900%]	unsure [-1411.894µs; -96.681µs] or [-4.782%; -0.327%]	unstable [-10.845op/s; +40.282op/s] or [-4.353%; +16.170%]	17.278ms	28.772ms	263.844op/s	18.425ms	29.526ms	249.125op/s

Request duration reports for insecure-bank

gantt
    title insecure-bank - request duration [CI 0.99] : candidate=1.61.0-SNAPSHOT~c1d9b0a4df, baseline=1.62.0-SNAPSHOT~8569434beb
    dateFormat X
    axisFormat %s
section baseline
no_agent (1.261 ms) : 1249, 1274
.   : milestone, 1261,
iast (3.296 ms) : 3246, 3346
.   : milestone, 3296,
iast_FULL (6.056 ms) : 5993, 6118
.   : milestone, 6056,
iast_GLOBAL (3.819 ms) : 3757, 3881
.   : milestone, 3819,
profiling (2.348 ms) : 2325, 2372
.   : milestone, 2348,
tracing (1.893 ms) : 1877, 1909
.   : milestone, 1893,
section candidate
no_agent (1.248 ms) : 1236, 1261
.   : milestone, 1248,
iast (3.362 ms) : 3313, 3411
.   : milestone, 3362,
iast_FULL (6.092 ms) : 6030, 6154
.   : milestone, 6092,
iast_GLOBAL (3.639 ms) : 3587, 3692
.   : milestone, 3639,
profiling (2.179 ms) : 2157, 2201
.   : milestone, 2179,
tracing (1.943 ms) : 1926, 1961
.   : milestone, 1943,

baseline results

Variant	Request duration [CI 0.99]	Δ no_agent
no_agent	1.261 ms [1.249 ms, 1.274 ms]	-
iast	3.296 ms [3.246 ms, 3.346 ms]	2.035 ms (161.4%)
iast_FULL	6.056 ms [5.993 ms, 6.118 ms]	4.794 ms (380.2%)
iast_GLOBAL	3.819 ms [3.757 ms, 3.881 ms]	2.558 ms (202.8%)
profiling	2.348 ms [2.325 ms, 2.372 ms]	1.087 ms (86.2%)
tracing	1.893 ms [1.877 ms, 1.909 ms]	632.19 µs (50.1%)

candidate results

Variant	Request duration [CI 0.99]	Δ no_agent
no_agent	1.248 ms [1.236 ms, 1.261 ms]	-
iast	3.362 ms [3.313 ms, 3.411 ms]	2.113 ms (169.3%)
iast_FULL	6.092 ms [6.03 ms, 6.154 ms]	4.844 ms (388.0%)
iast_GLOBAL	3.639 ms [3.587 ms, 3.692 ms]	2.391 ms (191.5%)
profiling	2.179 ms [2.157 ms, 2.201 ms]	930.72 µs (74.6%)
tracing	1.943 ms [1.926 ms, 1.961 ms]	695.093 µs (55.7%)

Request duration reports for petclinic

gantt
    title petclinic - request duration [CI 0.99] : candidate=1.61.0-SNAPSHOT~c1d9b0a4df, baseline=1.62.0-SNAPSHOT~8569434beb
    dateFormat X
    axisFormat %s
section baseline
no_agent (18.435 ms) : 18249, 18620
.   : milestone, 18435,
appsec (18.884 ms) : 18693, 19074
.   : milestone, 18884,
code_origins (18.731 ms) : 18547, 18916
.   : milestone, 18731,
iast (17.815 ms) : 17639, 17991
.   : milestone, 17815,
profiling (18.308 ms) : 18124, 18493
.   : milestone, 18308,
tracing (18.648 ms) : 18461, 18835
.   : milestone, 18648,
section candidate
no_agent (19.178 ms) : 18984, 19373
.   : milestone, 19178,
appsec (18.39 ms) : 18205, 18576
.   : milestone, 18390,
code_origins (17.682 ms) : 17505, 17858
.   : milestone, 17682,
iast (18.066 ms) : 17889, 18243
.   : milestone, 18066,
profiling (18.376 ms) : 18189, 18563
.   : milestone, 18376,
tracing (18.034 ms) : 17855, 18213
.   : milestone, 18034,

baseline results

Variant	Request duration [CI 0.99]	Δ no_agent
no_agent	18.435 ms [18.249 ms, 18.62 ms]	-
appsec	18.884 ms [18.693 ms, 19.074 ms]	448.963 µs (2.4%)
code_origins	18.731 ms [18.547 ms, 18.916 ms]	296.744 µs (1.6%)
iast	17.815 ms [17.639 ms, 17.991 ms]	-619.569 µs (-3.4%)
profiling	18.308 ms [18.124 ms, 18.493 ms]	-126.287 µs (-0.7%)
tracing	18.648 ms [18.461 ms, 18.835 ms]	213.292 µs (1.2%)

candidate results

Variant	Request duration [CI 0.99]	Δ no_agent
no_agent	19.178 ms [18.984 ms, 19.373 ms]	-
appsec	18.39 ms [18.205 ms, 18.576 ms]	-788.1 µs (-4.1%)
code_origins	17.682 ms [17.505 ms, 17.858 ms]	-1.497 ms (-7.8%)
iast	18.066 ms [17.889 ms, 18.243 ms]	-1.112 ms (-5.8%)
profiling	18.376 ms [18.189 ms, 18.563 ms]	-802.172 µs (-4.2%)
tracing	18.034 ms [17.855 ms, 18.213 ms]	-1.145 ms (-6.0%)

Dacapo

Parameters

	Baseline	Candidate
baseline_or_candidate	baseline	candidate
git_branch	master	alexeyk/protocol-v1-1
git_commit_date	1776899365	1776953664
git_commit_sha	`8569434`	`c1d9b0a`
release_version	1.62.0-SNAPSHOT~8569434beb	1.61.0-SNAPSHOT~c1d9b0a4df

See matching parameters

	Baseline	Candidate
application	biojava	biojava
ci_job_date	1776955705	1776955705
ci_job_id	1624266367	1624266367
ci_pipeline_id	109311800	109311800
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-owjxxv80 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-owjxxv80 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=1.61.0-SNAPSHOT~c1d9b0a4df, baseline=1.62.0-SNAPSHOT~8569434beb
    dateFormat X
    axisFormat %s
section baseline
no_agent (14.778 s) : 14778000, 14778000
.   : milestone, 14778000,
appsec (14.769 s) : 14769000, 14769000
.   : milestone, 14769000,
iast (18.376 s) : 18376000, 18376000
.   : milestone, 18376000,
iast_GLOBAL (18.006 s) : 18006000, 18006000
.   : milestone, 18006000,
profiling (14.79 s) : 14790000, 14790000
.   : milestone, 14790000,
tracing (14.673 s) : 14673000, 14673000
.   : milestone, 14673000,
section candidate
no_agent (15.239 s) : 15239000, 15239000
.   : milestone, 15239000,
appsec (14.823 s) : 14823000, 14823000
.   : milestone, 14823000,
iast (18.979 s) : 18979000, 18979000
.   : milestone, 18979000,
iast_GLOBAL (18.155 s) : 18155000, 18155000
.   : milestone, 18155000,
profiling (15.276 s) : 15276000, 15276000
.   : milestone, 15276000,
tracing (15.022 s) : 15022000, 15022000
.   : milestone, 15022000,

baseline results

Variant	Execution Time [CI 0.99]	Δ no_agent
no_agent	14.778 s [14.778 s, 14.778 s]	-
appsec	14.769 s [14.769 s, 14.769 s]	-9.0 ms (-0.1%)
iast	18.376 s [18.376 s, 18.376 s]	3.598 s (24.3%)
iast_GLOBAL	18.006 s [18.006 s, 18.006 s]	3.228 s (21.8%)
profiling	14.79 s [14.79 s, 14.79 s]	12.0 ms (0.1%)
tracing	14.673 s [14.673 s, 14.673 s]	-105.0 ms (-0.7%)

candidate results

Variant	Execution Time [CI 0.99]	Δ no_agent
no_agent	15.239 s [15.239 s, 15.239 s]	-
appsec	14.823 s [14.823 s, 14.823 s]	-416.0 ms (-2.7%)
iast	18.979 s [18.979 s, 18.979 s]	3.74 s (24.5%)
iast_GLOBAL	18.155 s [18.155 s, 18.155 s]	2.916 s (19.1%)
profiling	15.276 s [15.276 s, 15.276 s]	37.0 ms (0.2%)
tracing	15.022 s [15.022 s, 15.022 s]	-217.0 ms (-1.4%)

Execution time for tomcat

gantt
    title tomcat - execution time [CI 0.99] : candidate=1.61.0-SNAPSHOT~c1d9b0a4df, baseline=1.62.0-SNAPSHOT~8569434beb
    dateFormat X
    axisFormat %s
section baseline
no_agent (1.485 ms) : 1473, 1496
.   : milestone, 1485,
appsec (3.759 ms) : 3542, 3977
.   : milestone, 3759,
iast (2.27 ms) : 2199, 2340
.   : milestone, 2270,
iast_GLOBAL (2.318 ms) : 2248, 2389
.   : milestone, 2318,
profiling (2.098 ms) : 2043, 2153
.   : milestone, 2098,
tracing (2.081 ms) : 2027, 2135
.   : milestone, 2081,
section candidate
no_agent (1.484 ms) : 1473, 1496
.   : milestone, 1484,
appsec (3.836 ms) : 3612, 4060
.   : milestone, 3836,
iast (2.275 ms) : 2204, 2345
.   : milestone, 2275,
iast_GLOBAL (2.322 ms) : 2251, 2393
.   : milestone, 2322,
profiling (2.098 ms) : 2042, 2153
.   : milestone, 2098,
tracing (2.079 ms) : 2025, 2133
.   : milestone, 2079,

baseline results

Variant	Execution Time [CI 0.99]	Δ no_agent
no_agent	1.485 ms [1.473 ms, 1.496 ms]	-
appsec	3.759 ms [3.542 ms, 3.977 ms]	2.274 ms (153.2%)
iast	2.27 ms [2.199 ms, 2.34 ms]	784.765 µs (52.9%)
iast_GLOBAL	2.318 ms [2.248 ms, 2.389 ms]	833.492 µs (56.1%)
profiling	2.098 ms [2.043 ms, 2.153 ms]	613.429 µs (41.3%)
tracing	2.081 ms [2.027 ms, 2.135 ms]	596.324 µs (40.2%)

candidate results

Variant	Execution Time [CI 0.99]	Δ no_agent
no_agent	1.484 ms [1.473 ms, 1.496 ms]	-
appsec	3.836 ms [3.612 ms, 4.06 ms]	2.352 ms (158.4%)
iast	2.275 ms [2.204 ms, 2.345 ms]	790.208 µs (53.2%)
iast_GLOBAL	2.322 ms [2.251 ms, 2.393 ms]	837.482 µs (56.4%)
profiling	2.098 ms [2.042 ms, 2.153 ms]	613.296 µs (41.3%)
tracing	2.079 ms [2.025 ms, 2.133 ms]	594.427 µs (40.0%)

# Conflicts: # dd-trace-core/src/main/java/datadog/trace/core/DDSpanContext.java

mcculls

LGTM, thanks for improving the protocol selection - and the test coverage

AlexeyKuznetsov-DD · 2026-04-23T15:13:31Z

/merge

gh-worker-devflow-routing-ef8351 · 2026-04-23T15:13:36Z

AlexeyKuznetsov-DD added 2 commits March 10, 2026 19:27

Protocol v1: draft implementation

fb856c0

Added chunk attributes.

37be0e8

AlexeyKuznetsov-DD self-assigned this Mar 10, 2026

AlexeyKuznetsov-DD added tag: do not merge Do not merge changes comp: core Tracer core labels Mar 10, 2026

AlexeyKuznetsov-DD added 24 commits March 10, 2026 21:56

Added process tags.

7d72919

Fixed first span metadata processing.

cd59310

Disable test temporary.

deab351

Forced to use v1 for testing.

549bef5

Merge branch 'master' into alexeyk/protocol-v1-1

5e329c5

Merge branch 'master' into alexeyk/protocol-v1-1

7d86270

Merge branch 'master' into alexeyk/protocol-v1-1

e593140

Fixed mock server to support v1 and some renaming.

c55bed4

Merge branch 'master' into alexeyk/protocol-v1-1

ca09892

Fixed v1 protocol emulation.

2e9fd4a

Merge branch 'master' into alexeyk/protocol-v1-1

c12267b

Merge branch 'master' into alexeyk/protocol-v1-1

c320eee

Added missing baggage. Fixed smoke tests.

c781a95

Merge branch 'master' into alexeyk/protocol-v1-1

a2a31b6

Flatten attrs. Fixed tests.

0450392

Merge branch 'master' into alexeyk/protocol-v1-1

c86443e

Top level.

882350a

Merge branch 'master' into alexeyk/protocol-v1-1

68e07c2

Added /info point for mock server.

a1afc49

Merge branch 'master' into alexeyk/protocol-v1-1

c41c697

Refactored code duplication.

6f232d3

Refactored protocol version to be enum instead of string.

808761a

Fixed failed tests.

1a4021d

Fixed failed tests.

690427a

AlexeyKuznetsov-DD added 5 commits April 17, 2026 14:29

Merge branch 'master' into alexeyk/protocol-v1-1

6fa2b54

Merge branch 'master' into alexeyk/protocol-v1-1

c9a31a6

Optimization of traceId serialization: do not allocate temporary buffer.

bae76f8

Java docs.

f53cfc7

Merge branch 'master' into alexeyk/protocol-v1-1

a57ea33

AlexeyKuznetsov-DD requested a review from mcculls April 20, 2026 18:50

AlexeyKuznetsov-DD added 6 commits April 21, 2026 13:24

Merge branch 'master' into alexeyk/protocol-v1-1

5266254

# Conflicts: # dd-trace-core/src/main/java/datadog/trace/core/DDSpanContext.java

Merged with master.

76d8898

Refactored processTagsAndBaggage for v1 protocol.

935678f

Fixed recursion.

8e198ba

Fixed groovy compilation.

2275e71

Merge branch 'master' into alexeyk/protocol-v1-1

758467a

AlexeyKuznetsov-DD changed the title ~~Protocol v1~~ Efficient Trace Payload Protocol (v1 protocol) Apr 22, 2026