Add stable session ID headers to telemetry requests by khanayan123 · Pull Request #10914 · DataDog/dd-trace-java

khanayan123 · 2026-03-20T16:29:00Z

Summary

Implements the Stable Service Instance Identifier RFC for Java telemetry.

Adds DD-Session-ID header (= runtime_id) to all telemetry HTTP requests
Adds DD-Root-Session-ID header when process was spawned by an instrumented parent (value inherited via _DD_ROOT_JAVA_SESSION_ID env var)
Auto-propagates _DD_ROOT_JAVA_SESSION_ID to child processes via the existing ProcessImpl.start() hook — no user code changes required
_DD_ROOT_JAVA_SESSION_ID is an internal env var (underscore-prefixed to bypass config-inversion validation, not added to supported configurations)

This enables the backend to correlate telemetry across parent/child process relationships without the broken uncorrelated runtime_id regeneration on process spawn.

Files changed

File	Change
`Config.java`	Add `rootSessionId` to `RuntimeIdHolder`, read via `ConfigHelper.env()` from `_DD_ROOT_JAVA_SESSION_ID` (falls back to `runtimeId`)
`TelemetryRequest.java`	Add `DD-Session-ID` and conditional `DD-Root-Session-ID` headers in `httpRequest()`
`ProcessImplStartAdvice.java`	Inject `_DD_ROOT_JAVA_SESSION_ID` into child process environment map via existing `ProcessImpl.start()` hook
`TestTelemetryRouter.groovy`	Assert `DD-Session-ID` equals runtime ID and `DD-Root-Session-ID` is absent in non-child context
`ProcessImplInstrumentationSpecification.groovy`	Add test verifying child process inherits root session ID

Cross-SDK references

Implements the Stable Service Instance Identifier RFC for Java. - Add DD-Session-ID header (= runtime_id) to all telemetry requests - Add DD-Root-Session-ID header when process is a child (inherited from parent) - Read _DD_ROOT_JAVA_SESSION_ID from environment at init time - Auto-propagate _DD_ROOT_JAVA_SESSION_ID to child processes via ProcessBuilder instrumentation Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Remove separate ProcessBuilderSessionId instrumentation files and fold env var injection into the existing ProcessImplStartAdvice. Adds _DD_ROOT_JAVA_SESSION_ID to the child process environment map directly in the ProcessImpl.start() hook. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Verify DD-Session-ID equals runtime ID and DD-Root-Session-ID is absent when rootSessionId == runtimeId (non-child process), or present with the correct value when they differ. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

- Use ConfigHelper.env() instead of EnvironmentVariables.get() for _DD_ROOT_JAVA_SESSION_ID to satisfy config-inversion-linter. The underscore prefix bypasses supported-config validation (internal var). - Remove readOnly=false from @Advice.Argument(1) — we mutate the map via put(), not reassign the reference. readOnly=false generates unnecessary bytecode that breaks bootstrap class instrumentation. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

github-actions · 2026-03-20T17:23:26Z

Hi! 👋 Thanks for your pull request! 🎉

To help us review it, please make sure to:

Add at least one type, and one component or instrumentation label to the pull request

If you need help, please check our contributing guidelines.

mhlidd

2 small questions

mhlidd · 2026-03-20T17:45:41Z

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

   */
  static class RuntimeIdHolder {
    static final String runtimeId = RandomUtils.randomUUID().toString();
+    static final String rootSessionId = initRootSessionId();


❓ Is this a value that we should include in tracer logs? We already include runtimeId in the logs 🤔

Any reason not to? backend will start correlating telemetry by root session id but maybe we can optionally include it in logs if they are runtime id does note equal root it

For simplicity's sake, I'm in favor of just including the raw value in logs unless you have objections

(ref)

mhlidd · 2026-03-20T17:53:44Z

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

  }

+  public String getRootSessionId() {
+    return RuntimeIdHolder.rootSessionId;


What if runtimeIdEnabled is false? Currently, RuntimeID returns "" if runtimeIdEnabled is false - should rootSessionId follow the same trend? Otherwise we risk a situation where there is no runtimeId but there is a rootSessionId. (ref)

we should disable it i believe

pr-commenter · 2026-03-20T18:06:48Z

Benchmarks

⚠️ Warning: Baseline build not found for merge-base commit. Comparing against the latest commit on master instead.

Startup

Parameters

	Baseline	Candidate
baseline_or_candidate	baseline	candidate
git_branch	master	ayan.khan/stable-session-id-headers
git_commit_date	1774018274	1774030759
git_commit_sha	`828c9cc`	`1f53945`
release_version	1.61.0-SNAPSHOT~828c9cc58f	1.61.0-SNAPSHOT~1f53945a22

See matching parameters

	Baseline	Candidate
application	insecure-bank	insecure-bank
ci_job_date	1774033105	1774033105
ci_job_id	1526991596	1526991596
ci_pipeline_id	103794011	103794011
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-lmqf3uf0 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-lmqf3uf0 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 1 performance regressions! Performance is the same for 64 metrics, 6 unstable metrics.

scenario	Δ mean execution_time	candidate mean execution_time	baseline mean execution_time
scenario:startup:insecure-bank:iast:Debugger	worse [+1.756ms; +6.577ms] or [+2.653%; +9.934%]	70.370ms	66.203ms

Startup time reports for insecure-bank

gantt
    title insecure-bank - global startup overhead: candidate=1.61.0-SNAPSHOT~1f53945a22, baseline=1.61.0-SNAPSHOT~828c9cc58f

    dateFormat X
    axisFormat %s
section tracing
Agent [baseline] (1.061 s) : 0, 1060549
Total [baseline] (8.841 s) : 0, 8841236
Agent [candidate] (1.054 s) : 0, 1053809
Total [candidate] (8.813 s) : 0, 8813413
section iast
Agent [baseline] (1.224 s) : 0, 1223950
Total [baseline] (9.524 s) : 0, 9524076
Agent [candidate] (1.242 s) : 0, 1242383
Total [candidate] (9.578 s) : 0, 9577594

baseline results

Module	Variant	Duration	Δ tracing
Agent	tracing	1.061 s	-
Agent	iast	1.224 s	163.4 ms (15.4%)
Total	tracing	8.841 s	-
Total	iast	9.524 s	682.84 ms (7.7%)

candidate results

Module	Variant	Duration	Δ tracing
Agent	tracing	1.054 s	-
Agent	iast	1.242 s	188.574 ms (17.9%)
Total	tracing	8.813 s	-
Total	iast	9.578 s	764.181 ms (8.7%)

gantt
    title insecure-bank - break down per module: candidate=1.61.0-SNAPSHOT~1f53945a22, baseline=1.61.0-SNAPSHOT~828c9cc58f

    dateFormat X
    axisFormat %s
section tracing
crashtracking [baseline] (1.207 ms) : 0, 1207
crashtracking [candidate] (1.207 ms) : 0, 1207
BytebuddyAgent [baseline] (632.761 ms) : 0, 632761
BytebuddyAgent [candidate] (627.552 ms) : 0, 627552
AgentMeter [baseline] (29.573 ms) : 0, 29573
AgentMeter [candidate] (29.327 ms) : 0, 29327
GlobalTracer [baseline] (257.262 ms) : 0, 257262
GlobalTracer [candidate] (256.542 ms) : 0, 256542
AppSec [baseline] (31.823 ms) : 0, 31823
AppSec [candidate] (31.599 ms) : 0, 31599
Debugger [baseline] (59.743 ms) : 0, 59743
Debugger [candidate] (59.495 ms) : 0, 59495
Remote Config [baseline] (588.308 µs) : 0, 588
Remote Config [candidate] (583.755 µs) : 0, 584
Telemetry [baseline] (8.021 ms) : 0, 8021
Telemetry [candidate] (8.078 ms) : 0, 8078
Flare Poller [baseline] (3.503 ms) : 0, 3503
Flare Poller [candidate] (3.521 ms) : 0, 3521
section iast
crashtracking [baseline] (1.205 ms) : 0, 1205
crashtracking [candidate] (1.215 ms) : 0, 1215
BytebuddyAgent [baseline] (794.399 ms) : 0, 794399
BytebuddyAgent [candidate] (807.79 ms) : 0, 807790
AgentMeter [baseline] (11.346 ms) : 0, 11346
AgentMeter [candidate] (11.727 ms) : 0, 11727
GlobalTracer [baseline] (246.615 ms) : 0, 246615
GlobalTracer [candidate] (249.387 ms) : 0, 249387
AppSec [baseline] (27.186 ms) : 0, 27186
AppSec [candidate] (26.9 ms) : 0, 26900
Debugger [baseline] (66.203 ms) : 0, 66203
Debugger [candidate] (70.37 ms) : 0, 70370
Remote Config [baseline] (525.171 µs) : 0, 525
Remote Config [candidate] (528.366 µs) : 0, 528
Telemetry [baseline] (11.265 ms) : 0, 11265
Telemetry [candidate] (9.137 ms) : 0, 9137
Flare Poller [baseline] (3.934 ms) : 0, 3934
Flare Poller [candidate] (3.332 ms) : 0, 3332
IAST [baseline] (25.309 ms) : 0, 25309
IAST [candidate] (25.691 ms) : 0, 25691

Startup time reports for petclinic

gantt
    title petclinic - global startup overhead: candidate=1.61.0-SNAPSHOT~1f53945a22, baseline=1.61.0-SNAPSHOT~828c9cc58f

    dateFormat X
    axisFormat %s
section tracing
Agent [baseline] (1.057 s) : 0, 1056547
Total [baseline] (11.002 s) : 0, 11002059
Agent [candidate] (1.059 s) : 0, 1059259
Total [candidate] (11.005 s) : 0, 11004831
section appsec
Agent [baseline] (1.247 s) : 0, 1247374
Total [baseline] (11.16 s) : 0, 11159855
Agent [candidate] (1.252 s) : 0, 1251808
Total [candidate] (11.205 s) : 0, 11205039
section iast
Agent [baseline] (1.234 s) : 0, 1233856
Total [baseline] (11.374 s) : 0, 11373720
Agent [candidate] (1.225 s) : 0, 1225450
Total [candidate] (11.377 s) : 0, 11376858
section profiling
Agent [baseline] (1.19 s) : 0, 1189926
Total [baseline] (11.022 s) : 0, 11022000
Agent [candidate] (1.19 s) : 0, 1190389
Total [candidate] (11.186 s) : 0, 11185893

baseline results

Module	Variant	Duration	Δ tracing
Agent	tracing	1.057 s	-
Agent	appsec	1.247 s	190.827 ms (18.1%)
Agent	iast	1.234 s	177.308 ms (16.8%)
Agent	profiling	1.19 s	133.379 ms (12.6%)
Total	tracing	11.002 s	-
Total	appsec	11.16 s	157.795 ms (1.4%)
Total	iast	11.374 s	371.661 ms (3.4%)
Total	profiling	11.022 s	19.941 ms (0.2%)

candidate results

Module	Variant	Duration	Δ tracing
Agent	tracing	1.059 s	-
Agent	appsec	1.252 s	192.549 ms (18.2%)
Agent	iast	1.225 s	166.191 ms (15.7%)
Agent	profiling	1.19 s	131.13 ms (12.4%)
Total	tracing	11.005 s	-
Total	appsec	11.205 s	200.208 ms (1.8%)
Total	iast	11.377 s	372.027 ms (3.4%)
Total	profiling	11.186 s	181.062 ms (1.6%)

gantt
    title petclinic - break down per module: candidate=1.61.0-SNAPSHOT~1f53945a22, baseline=1.61.0-SNAPSHOT~828c9cc58f

    dateFormat X
    axisFormat %s
section tracing
crashtracking [baseline] (1.204 ms) : 0, 1204
crashtracking [candidate] (1.187 ms) : 0, 1187
BytebuddyAgent [baseline] (628.684 ms) : 0, 628684
BytebuddyAgent [candidate] (629.236 ms) : 0, 629236
AgentMeter [baseline] (29.348 ms) : 0, 29348
AgentMeter [candidate] (29.278 ms) : 0, 29278
GlobalTracer [baseline] (256.449 ms) : 0, 256449
GlobalTracer [candidate] (256.947 ms) : 0, 256947
AppSec [baseline] (31.66 ms) : 0, 31660
AppSec [candidate] (31.739 ms) : 0, 31739
Debugger [baseline] (60.363 ms) : 0, 60363
Debugger [candidate] (60.407 ms) : 0, 60407
Remote Config [baseline] (588.77 µs) : 0, 589
Remote Config [candidate] (581.839 µs) : 0, 582
Telemetry [baseline] (8.004 ms) : 0, 8004
Telemetry [candidate] (9.517 ms) : 0, 9517
Flare Poller [baseline] (4.264 ms) : 0, 4264
Flare Poller [candidate] (4.372 ms) : 0, 4372
section appsec
crashtracking [baseline] (1.214 ms) : 0, 1214
crashtracking [candidate] (1.187 ms) : 0, 1187
BytebuddyAgent [baseline] (658.976 ms) : 0, 658976
BytebuddyAgent [candidate] (661.473 ms) : 0, 661473
AgentMeter [baseline] (12.103 ms) : 0, 12103
AgentMeter [candidate] (12.142 ms) : 0, 12142
GlobalTracer [baseline] (258.171 ms) : 0, 258171
GlobalTracer [candidate] (259.193 ms) : 0, 259193
AppSec [baseline] (177.658 ms) : 0, 177658
AppSec [candidate] (177.989 ms) : 0, 177989
Debugger [baseline] (66.245 ms) : 0, 66245
Debugger [candidate] (66.5 ms) : 0, 66500
Remote Config [baseline] (629.589 µs) : 0, 630
Remote Config [candidate] (638.058 µs) : 0, 638
Telemetry [baseline] (8.333 ms) : 0, 8333
Telemetry [candidate] (8.428 ms) : 0, 8428
Flare Poller [baseline] (3.602 ms) : 0, 3602
Flare Poller [candidate] (3.664 ms) : 0, 3664
IAST [baseline] (24.249 ms) : 0, 24249
IAST [candidate] (24.333 ms) : 0, 24333
section iast
crashtracking [baseline] (1.197 ms) : 0, 1197
crashtracking [candidate] (1.191 ms) : 0, 1191
BytebuddyAgent [baseline] (801.169 ms) : 0, 801169
BytebuddyAgent [candidate] (794.844 ms) : 0, 794844
AgentMeter [baseline] (11.443 ms) : 0, 11443
AgentMeter [candidate] (11.407 ms) : 0, 11407
GlobalTracer [baseline] (247.965 ms) : 0, 247965
GlobalTracer [candidate] (246.747 ms) : 0, 246747
AppSec [baseline] (26.632 ms) : 0, 26632
AppSec [candidate] (26.361 ms) : 0, 26361
Debugger [baseline] (70.717 ms) : 0, 70717
Debugger [candidate] (70.637 ms) : 0, 70637
Remote Config [baseline] (538.01 µs) : 0, 538
Remote Config [candidate] (532.082 µs) : 0, 532
Telemetry [baseline] (9.237 ms) : 0, 9237
Telemetry [candidate] (9.176 ms) : 0, 9176
Flare Poller [baseline] (3.343 ms) : 0, 3343
Flare Poller [candidate] (3.327 ms) : 0, 3327
IAST [baseline] (25.399 ms) : 0, 25399
IAST [candidate] (25.233 ms) : 0, 25233
section profiling
crashtracking [baseline] (1.174 ms) : 0, 1174
crashtracking [candidate] (1.199 ms) : 0, 1199
BytebuddyAgent [baseline] (686.74 ms) : 0, 686740
BytebuddyAgent [candidate] (686.695 ms) : 0, 686695
AgentMeter [baseline] (9.019 ms) : 0, 9019
AgentMeter [candidate] (9.051 ms) : 0, 9051
GlobalTracer [baseline] (216.678 ms) : 0, 216678
GlobalTracer [candidate] (216.555 ms) : 0, 216555
AppSec [baseline] (32.398 ms) : 0, 32398
AppSec [candidate] (32.329 ms) : 0, 32329
Debugger [baseline] (66.338 ms) : 0, 66338
Debugger [candidate] (65.502 ms) : 0, 65502
Remote Config [baseline] (570.748 µs) : 0, 571
Remote Config [candidate] (575.657 µs) : 0, 576
Telemetry [baseline] (7.806 ms) : 0, 7806
Telemetry [candidate] (7.887 ms) : 0, 7887
Flare Poller [baseline] (3.521 ms) : 0, 3521
Flare Poller [candidate] (4.34 ms) : 0, 4340
ProfilingAgent [baseline] (94.449 ms) : 0, 94449
ProfilingAgent [candidate] (95.016 ms) : 0, 95016
Profiling [baseline] (95.022 ms) : 0, 95022
Profiling [candidate] (95.6 ms) : 0, 95600

Load

Parameters

	Baseline	Candidate
baseline_or_candidate	baseline	candidate
git_branch	master	ayan.khan/stable-session-id-headers
git_commit_date	1774018274	1774030759
git_commit_sha	`828c9cc`	`1f53945`
release_version	1.61.0-SNAPSHOT~828c9cc58f	1.61.0-SNAPSHOT~1f53945a22

See matching parameters

	Baseline	Candidate
application	insecure-bank	insecure-bank
ci_job_date	1774033665	1774033665
ci_job_id	1526991597	1526991597
ci_pipeline_id	103794011	103794011
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-1-2vm3f926 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-1-2vm3f926 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 1 performance regressions! Performance is the same for 19 metrics, 16 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	worse [+121.488µs; +192.240µs] or [+4.946%; +7.827%]	unsure [+123.351µs; +482.003µs] or [+1.702%; +6.649%]	unstable [-197.492op/s; +64.742op/s] or [-13.716%; +4.496%]	2.613ms	7.552ms	1373.531op/s	2.456ms	7.249ms	1439.906op/s

Request duration reports for petclinic

gantt
    title petclinic - request duration [CI 0.99] : candidate=1.61.0-SNAPSHOT~1f53945a22, baseline=1.61.0-SNAPSHOT~828c9cc58f
    dateFormat X
    axisFormat %s
section baseline
no_agent (19.331 ms) : 19133, 19529
.   : milestone, 19331,
appsec (18.5 ms) : 18317, 18683
.   : milestone, 18500,
code_origins (18.115 ms) : 17932, 18299
.   : milestone, 18115,
iast (17.934 ms) : 17758, 18111
.   : milestone, 17934,
profiling (18.723 ms) : 18537, 18910
.   : milestone, 18723,
tracing (17.672 ms) : 17499, 17846
.   : milestone, 17672,
section candidate
no_agent (19.407 ms) : 19210, 19605
.   : milestone, 19407,
appsec (18.732 ms) : 18541, 18923
.   : milestone, 18732,
code_origins (17.891 ms) : 17712, 18070
.   : milestone, 17891,
iast (17.884 ms) : 17711, 18058
.   : milestone, 17884,
profiling (18.887 ms) : 18699, 19076
.   : milestone, 18887,
tracing (17.573 ms) : 17399, 17748
.   : milestone, 17573,

baseline results

Variant	Request duration [CI 0.99]	Δ no_agent
no_agent	19.331 ms [19.133 ms, 19.529 ms]	-
appsec	18.5 ms [18.317 ms, 18.683 ms]	-831.0 µs (-4.3%)
code_origins	18.115 ms [17.932 ms, 18.299 ms]	-1.216 ms (-6.3%)
iast	17.934 ms [17.758 ms, 18.111 ms]	-1.397 ms (-7.2%)
profiling	18.723 ms [18.537 ms, 18.91 ms]	-607.838 µs (-3.1%)
tracing	17.672 ms [17.499 ms, 17.846 ms]	-1.659 ms (-8.6%)

candidate results

Variant	Request duration [CI 0.99]	Δ no_agent
no_agent	19.407 ms [19.21 ms, 19.605 ms]	-
appsec	18.732 ms [18.541 ms, 18.923 ms]	-675.09 µs (-3.5%)
code_origins	17.891 ms [17.712 ms, 18.07 ms]	-1.516 ms (-7.8%)
iast	17.884 ms [17.711 ms, 18.058 ms]	-1.523 ms (-7.8%)
profiling	18.887 ms [18.699 ms, 19.076 ms]	-519.591 µs (-2.7%)
tracing	17.573 ms [17.399 ms, 17.748 ms]	-1.834 ms (-9.4%)

Request duration reports for insecure-bank

gantt
    title insecure-bank - request duration [CI 0.99] : candidate=1.61.0-SNAPSHOT~1f53945a22, baseline=1.61.0-SNAPSHOT~828c9cc58f
    dateFormat X
    axisFormat %s
section baseline
no_agent (1.184 ms) : 1173, 1196
.   : milestone, 1184,
iast (3.176 ms) : 3132, 3219
.   : milestone, 3176,
iast_FULL (5.977 ms) : 5915, 6038
.   : milestone, 5977,
iast_GLOBAL (3.482 ms) : 3424, 3540
.   : milestone, 3482,
profiling (2.172 ms) : 2148, 2196
.   : milestone, 2172,
tracing (1.862 ms) : 1844, 1880
.   : milestone, 1862,
section candidate
no_agent (1.176 ms) : 1164, 1187
.   : milestone, 1176,
iast (3.334 ms) : 3288, 3379
.   : milestone, 3334,
iast_FULL (5.997 ms) : 5937, 6058
.   : milestone, 5997,
iast_GLOBAL (3.569 ms) : 3507, 3632
.   : milestone, 3569,
profiling (2.107 ms) : 2089, 2125
.   : milestone, 2107,
tracing (1.847 ms) : 1830, 1865
.   : milestone, 1847,

baseline results

Variant	Request duration [CI 0.99]	Δ no_agent
no_agent	1.184 ms [1.173 ms, 1.196 ms]	-
iast	3.176 ms [3.132 ms, 3.219 ms]	1.992 ms (168.2%)
iast_FULL	5.977 ms [5.915 ms, 6.038 ms]	4.792 ms (404.7%)
iast_GLOBAL	3.482 ms [3.424 ms, 3.54 ms]	2.298 ms (194.1%)
profiling	2.172 ms [2.148 ms, 2.196 ms]	987.834 µs (83.4%)
tracing	1.862 ms [1.844 ms, 1.88 ms]	678.207 µs (57.3%)

candidate results

Variant	Request duration [CI 0.99]	Δ no_agent
no_agent	1.176 ms [1.164 ms, 1.187 ms]	-
iast	3.334 ms [3.288 ms, 3.379 ms]	2.158 ms (183.5%)
iast_FULL	5.997 ms [5.937 ms, 6.058 ms]	4.821 ms (410.0%)
iast_GLOBAL	3.569 ms [3.507 ms, 3.632 ms]	2.393 ms (203.5%)
profiling	2.107 ms [2.089 ms, 2.125 ms]	931.311 µs (79.2%)
tracing	1.847 ms [1.83 ms, 1.865 ms]	671.425 µs (57.1%)

Dacapo

Parameters

	Baseline	Candidate
baseline_or_candidate	baseline	candidate
git_branch	master	ayan.khan/stable-session-id-headers
git_commit_date	1774018274	1774030759
git_commit_sha	`828c9cc`	`1f53945`
release_version	1.61.0-SNAPSHOT~828c9cc58f	1.61.0-SNAPSHOT~1f53945a22

See matching parameters

	Baseline	Candidate
application	biojava	biojava
ci_job_date	1774033410	1774033410
ci_job_id	1526991598	1526991598
ci_pipeline_id	103794011	103794011
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-1-337wkosw 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-1-337wkosw 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~1f53945a22, baseline=1.61.0-SNAPSHOT~828c9cc58f
    dateFormat X
    axisFormat %s
section baseline
no_agent (15.558 s) : 15558000, 15558000
.   : milestone, 15558000,
appsec (14.602 s) : 14602000, 14602000
.   : milestone, 14602000,
iast (18.385 s) : 18385000, 18385000
.   : milestone, 18385000,
iast_GLOBAL (18.161 s) : 18161000, 18161000
.   : milestone, 18161000,
profiling (15.52 s) : 15520000, 15520000
.   : milestone, 15520000,
tracing (14.915 s) : 14915000, 14915000
.   : milestone, 14915000,
section candidate
no_agent (15.524 s) : 15524000, 15524000
.   : milestone, 15524000,
appsec (14.729 s) : 14729000, 14729000
.   : milestone, 14729000,
iast (18.12 s) : 18120000, 18120000
.   : milestone, 18120000,
iast_GLOBAL (17.875 s) : 17875000, 17875000
.   : milestone, 17875000,
profiling (14.874 s) : 14874000, 14874000
.   : milestone, 14874000,
tracing (14.94 s) : 14940000, 14940000
.   : milestone, 14940000,

baseline results

Variant	Execution Time [CI 0.99]	Δ no_agent
no_agent	15.558 s [15.558 s, 15.558 s]	-
appsec	14.602 s [14.602 s, 14.602 s]	-956.0 ms (-6.1%)
iast	18.385 s [18.385 s, 18.385 s]	2.827 s (18.2%)
iast_GLOBAL	18.161 s [18.161 s, 18.161 s]	2.603 s (16.7%)
profiling	15.52 s [15.52 s, 15.52 s]	-38.0 ms (-0.2%)
tracing	14.915 s [14.915 s, 14.915 s]	-643.0 ms (-4.1%)

candidate results

Variant	Execution Time [CI 0.99]	Δ no_agent
no_agent	15.524 s [15.524 s, 15.524 s]	-
appsec	14.729 s [14.729 s, 14.729 s]	-795.0 ms (-5.1%)
iast	18.12 s [18.12 s, 18.12 s]	2.596 s (16.7%)
iast_GLOBAL	17.875 s [17.875 s, 17.875 s]	2.351 s (15.1%)
profiling	14.874 s [14.874 s, 14.874 s]	-650.0 ms (-4.2%)
tracing	14.94 s [14.94 s, 14.94 s]	-584.0 ms (-3.8%)

Execution time for tomcat

gantt
    title tomcat - execution time [CI 0.99] : candidate=1.61.0-SNAPSHOT~1f53945a22, baseline=1.61.0-SNAPSHOT~828c9cc58f
    dateFormat X
    axisFormat %s
section baseline
no_agent (1.474 ms) : 1462, 1485
.   : milestone, 1474,
appsec (3.723 ms) : 3504, 3941
.   : milestone, 3723,
iast (2.255 ms) : 2186, 2324
.   : milestone, 2255,
iast_GLOBAL (2.3 ms) : 2231, 2370
.   : milestone, 2300,
profiling (2.096 ms) : 2041, 2151
.   : milestone, 2096,
tracing (2.08 ms) : 2027, 2134
.   : milestone, 2080,
section candidate
no_agent (1.475 ms) : 1464, 1487
.   : milestone, 1475,
appsec (3.8 ms) : 3578, 4022
.   : milestone, 3800,
iast (2.266 ms) : 2197, 2335
.   : milestone, 2266,
iast_GLOBAL (2.303 ms) : 2234, 2373
.   : milestone, 2303,
profiling (2.08 ms) : 2025, 2134
.   : milestone, 2080,
tracing (2.067 ms) : 2014, 2120
.   : milestone, 2067,

baseline results

Variant	Execution Time [CI 0.99]	Δ no_agent
no_agent	1.474 ms [1.462 ms, 1.485 ms]	-
appsec	3.723 ms [3.504 ms, 3.941 ms]	2.249 ms (152.6%)
iast	2.255 ms [2.186 ms, 2.324 ms]	781.566 µs (53.0%)
iast_GLOBAL	2.3 ms [2.231 ms, 2.37 ms]	826.452 µs (56.1%)
profiling	2.096 ms [2.041 ms, 2.151 ms]	622.195 µs (42.2%)
tracing	2.08 ms [2.027 ms, 2.134 ms]	606.576 µs (41.2%)

candidate results

Variant	Execution Time [CI 0.99]	Δ no_agent
no_agent	1.475 ms [1.464 ms, 1.487 ms]	-
appsec	3.8 ms [3.578 ms, 4.022 ms]	2.325 ms (157.6%)
iast	2.266 ms [2.197 ms, 2.335 ms]	790.974 µs (53.6%)
iast_GLOBAL	2.303 ms [2.234 ms, 2.373 ms]	827.994 µs (56.1%)
profiling	2.08 ms [2.025 ms, 2.134 ms]	604.462 µs (41.0%)
tracing	2.067 ms [2.014 ms, 2.12 ms]	591.781 µs (40.1%)

…Enabled, fix test - Add rootSessionId to Config.toString() for tracer log visibility - Gate getRootSessionId() behind runtimeIdEnabled like getRuntimeId() - Force environment map initialization in test to fix test_inst failures Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

dd-octo-sts · 2026-03-20T19:24:15Z

/merge

gh-worker-devflow-routing-ef8351 · 2026-03-20T19:24:19Z

View all feedbacks in Devflow UI.

2026-03-20 19:24:19 UTC ℹ️ Start processing command /merge

2026-03-20 19:24:23 UTC ℹ️ MergeQueue: pull request added to the queue

The expected merge time in master is approximately 3h (p90).

2026-03-20 20:26:04 UTC ℹ️ MergeQueue: This merge request was merged

khanayan123 and others added 4 commits March 20, 2026 12:27

khanayan123 mentioned this pull request Mar 20, 2026

feat: Stable Session ID headers for telemetry DataDog/dd-trace-dotnet#8352

Draft

4 tasks

khanayan123 marked this pull request as ready for review March 20, 2026 17:23

khanayan123 requested review from a team as code owners March 20, 2026 17:23

khanayan123 requested review from dougqh and removed request for a team March 20, 2026 17:23

khanayan123 requested a review from mabdinur March 20, 2026 17:23

github-actions bot added the tag: ai generated Largely based on code generated by an AI or LLM label Mar 20, 2026

khanayan123 added comp: telemetry Telemetry type: enhancement Enhancements and improvements labels Mar 20, 2026

mhlidd reviewed Mar 20, 2026

View reviewed changes

khanayan123 requested a review from mhlidd March 20, 2026 18:18

Remove unnecessary comment

1f53945

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

mhlidd approved these changes Mar 20, 2026

View reviewed changes

khanayan123 enabled auto-merge March 20, 2026 18:36

khanayan123 added this pull request to the merge queue Mar 20, 2026

github-merge-queue bot removed this pull request from the merge queue due to failed status checks Mar 20, 2026

gh-worker-dd-mergequeue-cf854d bot merged commit 468d566 into master Mar 20, 2026
566 checks passed

gh-worker-dd-mergequeue-cf854d bot deleted the ayan.khan/stable-session-id-headers branch March 20, 2026 20:26

github-actions bot added this to the 1.61.0 milestone Mar 20, 2026

khanayan123 mentioned this pull request Mar 23, 2026

instrumentation telemetry: validate session id headers DataDog/system-tests#6510

Draft

Provide feedback

Saved searches

Use saved searches to filter your results more quickly

Add stable session ID headers to telemetry requests#10914

Add stable session ID headers to telemetry requests#10914
gh-worker-dd-mergequeue-cf854d[bot] merged 6 commits intomasterfrom
ayan.khan/stable-session-id-headers

khanayan123 commented Mar 20, 2026 •

edited

Loading

Uh oh!

github-actions bot commented Mar 20, 2026 •

edited

Loading

Uh oh!

mhlidd left a comment

Uh oh!

mhlidd Mar 20, 2026

Uh oh!

khanayan123 Mar 20, 2026

Uh oh!

mhlidd Mar 20, 2026 •

edited

Loading

Uh oh!

khanayan123 Mar 20, 2026

Uh oh!

mhlidd Mar 20, 2026

Uh oh!

khanayan123 Mar 20, 2026

Uh oh!

pr-commenter bot commented Mar 20, 2026 •

edited

Loading

Uh oh!

dd-octo-sts bot commented Mar 20, 2026

Uh oh!

gh-worker-devflow-routing-ef8351 bot commented Mar 20, 2026 •

edited

Loading

Uh oh!

Uh oh!

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

2 participants

Conversation

khanayan123 commented Mar 20, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Summary

Files changed

Cross-SDK references

Uh oh!

github-actions bot commented Mar 20, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

mhlidd left a comment

Choose a reason for hiding this comment

Uh oh!

mhlidd Mar 20, 2026

Choose a reason for hiding this comment

Uh oh!

khanayan123 Mar 20, 2026

Choose a reason for hiding this comment

Uh oh!

mhlidd Mar 20, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Choose a reason for hiding this comment

Uh oh!

khanayan123 Mar 20, 2026

Choose a reason for hiding this comment

Uh oh!

mhlidd Mar 20, 2026

Choose a reason for hiding this comment

Uh oh!

khanayan123 Mar 20, 2026

Choose a reason for hiding this comment

Uh oh!

pr-commenter bot commented Mar 20, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Benchmarks

Startup

Parameters

Summary

Load

Parameters

Summary

Dacapo

Parameters

Summary

Uh oh!

dd-octo-sts bot commented Mar 20, 2026

Uh oh!

gh-worker-devflow-routing-ef8351 bot commented Mar 20, 2026 • edited Loading Uh oh! There was an error while loading. Please reload this page.

Uh oh!

Uh oh!

Uh oh!

Uh oh!

Reviewers

Assignees

Labels

Projects

Milestone

Development

Uh oh!

2 participants

khanayan123 commented Mar 20, 2026 •

edited

Loading

github-actions bot commented Mar 20, 2026 •

edited

Loading

mhlidd Mar 20, 2026 •

edited

Loading

pr-commenter bot commented Mar 20, 2026 •

edited

Loading

gh-worker-devflow-routing-ef8351 bot commented Mar 20, 2026 •

edited

Loading