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Cache Tracer Host Entry to reduce allocation in RemoteHostnameAdder#10968

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Cache Tracer Host Entry to reduce allocation in RemoteHostnameAdder#10968
dougqh wants to merge 3 commits intomasterfrom
dougqh/cache-tracer-host

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@dougqh dougqh commented Mar 25, 2026

What Does This Do

Cache Tracer Host Entry to reduce allocation in RemoteHostnameAdder

Motivation

Reduce allocation and garbage collection

Additional Notes

Contributor Checklist

Jira ticket: [PROJ-IDENT]

Note: Once your PR is ready to merge, add it to the merge queue by commenting /merge. /merge -c cancels the queue request. /merge -f --reason "reason" skips all merge queue checks; please use this judiciously, as some checks do not run at the PR-level. For more information, see this doc.

@dougqh dougqh requested a review from a team as a code owner March 25, 2026 18:42
@dougqh dougqh requested a review from mhlidd March 25, 2026 18:42
@dougqh dougqh added type: enhancement Enhancements and improvements comp: core Tracer core tag: performance Performance related changes labels Mar 25, 2026
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Benchmarks

Startup

Parameters

Baseline Candidate
baseline_or_candidate baseline candidate
git_branch master dougqh/cache-tracer-host
git_commit_date 1774632959 1774639488
git_commit_sha a1239d3 d8d553e
release_version 1.61.0-SNAPSHOT~a1239d32d8 1.61.0-SNAPSHOT~d8d553e8c0
See matching parameters
Baseline Candidate
application insecure-bank insecure-bank
ci_job_date 1774641386 1774641386
ci_job_id 1547118307 1547118307
ci_pipeline_id 104844161 104844161
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-0-68zkbtic 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-0-68zkbtic 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 61 metrics, 10 unstable metrics.

Startup time reports for insecure-bank 
gantt
    title insecure-bank - global startup overhead: candidate=1.61.0-SNAPSHOT~d8d553e8c0, baseline=1.61.0-SNAPSHOT~a1239d32d8

    dateFormat X
    axisFormat %s
section tracing
Agent [baseline] (1.065 s) : 0, 1064838
Total [baseline] (8.873 s) : 0, 8872542
Agent [candidate] (1.064 s) : 0, 1063670
Total [candidate] (8.866 s) : 0, 8865593
section iast
Agent [baseline] (1.237 s) : 0, 1236760
Total [baseline] (9.548 s) : 0, 9547890
Agent [candidate] (1.232 s) : 0, 1231987
Total [candidate] (9.591 s) : 0, 9590934
Loading
  • baseline results
Module Variant Duration Δ tracing
Agent tracing 1.065 s -
Agent iast 1.237 s 171.922 ms (16.1%)
Total tracing 8.873 s -
Total iast 9.548 s 675.348 ms (7.6%)
  • candidate results
Module Variant Duration Δ tracing
Agent tracing 1.064 s -
Agent iast 1.232 s 168.317 ms (15.8%)
Total tracing 8.866 s -
Total iast 9.591 s 725.341 ms (8.2%) 
gantt
    title insecure-bank - break down per module: candidate=1.61.0-SNAPSHOT~d8d553e8c0, baseline=1.61.0-SNAPSHOT~a1239d32d8

    dateFormat X
    axisFormat %s
section tracing
crashtracking [baseline] (1.221 ms) : 0, 1221
crashtracking [candidate] (1.225 ms) : 0, 1225
BytebuddyAgent [baseline] (634.633 ms) : 0, 634633
BytebuddyAgent [candidate] (630.999 ms) : 0, 630999
AgentMeter [baseline] (29.523 ms) : 0, 29523
AgentMeter [candidate] (29.613 ms) : 0, 29613
GlobalTracer [baseline] (257.898 ms) : 0, 257898
GlobalTracer [candidate] (258.952 ms) : 0, 258952
AppSec [baseline] (31.924 ms) : 0, 31924
AppSec [candidate] (32.073 ms) : 0, 32073
Debugger [baseline] (59.641 ms) : 0, 59641
Debugger [candidate] (59.993 ms) : 0, 59993
Remote Config [baseline] (599.968 µs) : 0, 600
Remote Config [candidate] (582.213 µs) : 0, 582
Telemetry [baseline] (8.083 ms) : 0, 8083
Telemetry [candidate] (8.141 ms) : 0, 8141
Flare Poller [baseline] (5.099 ms) : 0, 5099
Flare Poller [candidate] (5.931 ms) : 0, 5931
section iast
crashtracking [baseline] (1.22 ms) : 0, 1220
crashtracking [candidate] (1.194 ms) : 0, 1194
BytebuddyAgent [baseline] (803.629 ms) : 0, 803629
BytebuddyAgent [candidate] (800.481 ms) : 0, 800481
AgentMeter [baseline] (11.605 ms) : 0, 11605
AgentMeter [candidate] (11.605 ms) : 0, 11605
GlobalTracer [baseline] (248.621 ms) : 0, 248621
GlobalTracer [candidate] (247.225 ms) : 0, 247225
AppSec [baseline] (26.728 ms) : 0, 26728
AppSec [candidate] (26.593 ms) : 0, 26593
Debugger [baseline] (66.149 ms) : 0, 66149
Debugger [candidate] (69.576 ms) : 0, 69576
Remote Config [baseline] (536.355 µs) : 0, 536
Remote Config [candidate] (530.265 µs) : 0, 530
Telemetry [baseline] (12.442 ms) : 0, 12442
Telemetry [candidate] (9.626 ms) : 0, 9626
Flare Poller [baseline] (4.121 ms) : 0, 4121
Flare Poller [candidate] (3.557 ms) : 0, 3557
IAST [baseline] (25.531 ms) : 0, 25531
IAST [candidate] (25.494 ms) : 0, 25494
Loading
Startup time reports for petclinic 
gantt
    title petclinic - global startup overhead: candidate=1.61.0-SNAPSHOT~d8d553e8c0, baseline=1.61.0-SNAPSHOT~a1239d32d8

    dateFormat X
    axisFormat %s
section tracing
Agent [baseline] (1.064 s) : 0, 1063591
Total [baseline] (11.014 s) : 0, 11014473
Agent [candidate] (1.07 s) : 0, 1070171
Total [candidate] (11.11 s) : 0, 11110272
section appsec
Agent [baseline] (1.246 s) : 0, 1245509
Total [baseline] (11.098 s) : 0, 11097986
Agent [candidate] (1.254 s) : 0, 1253981
Total [candidate] (11.159 s) : 0, 11159409
section iast
Agent [baseline] (1.226 s) : 0, 1225568
Total [baseline] (11.331 s) : 0, 11330896
Agent [candidate] (1.228 s) : 0, 1228050
Total [candidate] (11.221 s) : 0, 11221041
section profiling
Agent [baseline] (1.183 s) : 0, 1182966
Total [baseline] (11.08 s) : 0, 11079801
Agent [candidate] (1.184 s) : 0, 1184188
Total [candidate] (11.042 s) : 0, 11041594
Loading
  • baseline results
Module Variant Duration Δ tracing
Agent tracing 1.064 s -
Agent appsec 1.246 s 181.918 ms (17.1%)
Agent iast 1.226 s 161.977 ms (15.2%)
Agent profiling 1.183 s 119.375 ms (11.2%)
Total tracing 11.014 s -
Total appsec 11.098 s 83.513 ms (0.8%)
Total iast 11.331 s 316.423 ms (2.9%)
Total profiling 11.08 s 65.328 ms (0.6%)
  • candidate results
Module Variant Duration Δ tracing
Agent tracing 1.07 s -
Agent appsec 1.254 s 183.81 ms (17.2%)
Agent iast 1.228 s 157.879 ms (14.8%)
Agent profiling 1.184 s 114.017 ms (10.7%)
Total tracing 11.11 s -
Total appsec 11.159 s 49.137 ms (0.4%)
Total iast 11.221 s 110.769 ms (1.0%)
Total profiling 11.042 s -68.678 ms (-0.6%) 
gantt
    title petclinic - break down per module: candidate=1.61.0-SNAPSHOT~d8d553e8c0, baseline=1.61.0-SNAPSHOT~a1239d32d8

    dateFormat X
    axisFormat %s
section tracing
crashtracking [baseline] (1.198 ms) : 0, 1198
crashtracking [candidate] (1.221 ms) : 0, 1221
BytebuddyAgent [baseline] (633.391 ms) : 0, 633391
BytebuddyAgent [candidate] (634.773 ms) : 0, 634773
AgentMeter [baseline] (29.576 ms) : 0, 29576
AgentMeter [candidate] (29.967 ms) : 0, 29967
GlobalTracer [baseline] (258.278 ms) : 0, 258278
GlobalTracer [candidate] (259.863 ms) : 0, 259863
AppSec [baseline] (31.983 ms) : 0, 31983
AppSec [candidate] (32.338 ms) : 0, 32338
Debugger [baseline] (60.681 ms) : 0, 60681
Debugger [candidate] (61.127 ms) : 0, 61127
Remote Config [baseline] (593.702 µs) : 0, 594
Remote Config [candidate] (592.846 µs) : 0, 593
Telemetry [baseline] (8.153 ms) : 0, 8153
Telemetry [candidate] (8.932 ms) : 0, 8932
Flare Poller [baseline] (3.6 ms) : 0, 3600
Flare Poller [candidate] (5.112 ms) : 0, 5112
section appsec
crashtracking [baseline] (1.195 ms) : 0, 1195
crashtracking [candidate] (1.208 ms) : 0, 1208
BytebuddyAgent [baseline] (657.384 ms) : 0, 657384
BytebuddyAgent [candidate] (663.346 ms) : 0, 663346
AgentMeter [baseline] (12.17 ms) : 0, 12170
AgentMeter [candidate] (12.249 ms) : 0, 12249
GlobalTracer [baseline] (257.453 ms) : 0, 257453
GlobalTracer [candidate] (259.11 ms) : 0, 259110
AppSec [baseline] (177.394 ms) : 0, 177394
AppSec [candidate] (178.27 ms) : 0, 178270
Debugger [baseline] (66.035 ms) : 0, 66035
Debugger [candidate] (66.485 ms) : 0, 66485
Remote Config [baseline] (644.525 µs) : 0, 645
Remote Config [candidate] (627.462 µs) : 0, 627
Telemetry [baseline] (8.472 ms) : 0, 8472
Telemetry [candidate] (8.359 ms) : 0, 8359
Flare Poller [baseline] (4.451 ms) : 0, 4451
Flare Poller [candidate] (3.606 ms) : 0, 3606
IAST [baseline] (24.089 ms) : 0, 24089
IAST [candidate] (24.325 ms) : 0, 24325
section iast
crashtracking [baseline] (1.181 ms) : 0, 1181
crashtracking [candidate] (1.185 ms) : 0, 1185
BytebuddyAgent [baseline] (794.804 ms) : 0, 794804
BytebuddyAgent [candidate] (796.748 ms) : 0, 796748
AgentMeter [baseline] (11.372 ms) : 0, 11372
AgentMeter [candidate] (11.434 ms) : 0, 11434
GlobalTracer [baseline] (246.654 ms) : 0, 246654
GlobalTracer [candidate] (247.272 ms) : 0, 247272
AppSec [baseline] (26.572 ms) : 0, 26572
AppSec [candidate] (26.521 ms) : 0, 26521
Debugger [baseline] (70.006 ms) : 0, 70006
Debugger [candidate] (70.474 ms) : 0, 70474
Remote Config [baseline] (530.546 µs) : 0, 531
Remote Config [candidate] (532.811 µs) : 0, 533
Telemetry [baseline] (9.649 ms) : 0, 9649
Telemetry [candidate] (9.151 ms) : 0, 9151
Flare Poller [baseline] (3.496 ms) : 0, 3496
Flare Poller [candidate] (3.355 ms) : 0, 3355
IAST [baseline] (25.272 ms) : 0, 25272
IAST [candidate] (25.301 ms) : 0, 25301
section profiling
crashtracking [baseline] (1.162 ms) : 0, 1162
crashtracking [candidate] (1.175 ms) : 0, 1175
BytebuddyAgent [baseline] (682.381 ms) : 0, 682381
BytebuddyAgent [candidate] (683.998 ms) : 0, 683998
AgentMeter [baseline] (8.962 ms) : 0, 8962
AgentMeter [candidate] (8.944 ms) : 0, 8944
GlobalTracer [baseline] (214.616 ms) : 0, 214616
GlobalTracer [candidate] (214.947 ms) : 0, 214947
AppSec [baseline] (32.353 ms) : 0, 32353
AppSec [candidate] (32.231 ms) : 0, 32231
Debugger [baseline] (66.239 ms) : 0, 66239
Debugger [candidate] (66.136 ms) : 0, 66136
Remote Config [baseline] (573.537 µs) : 0, 574
Remote Config [candidate] (558.235 µs) : 0, 558
Telemetry [baseline] (7.785 ms) : 0, 7785
Telemetry [candidate] (7.725 ms) : 0, 7725
Flare Poller [baseline] (3.556 ms) : 0, 3556
Flare Poller [candidate] (3.52 ms) : 0, 3520
ProfilingAgent [baseline] (94.415 ms) : 0, 94415
ProfilingAgent [candidate] (94.212 ms) : 0, 94212
Profiling [baseline] (94.973 ms) : 0, 94973
Profiling [candidate] (94.769 ms) : 0, 94769
Loading

Load

Parameters

Baseline Candidate
baseline_or_candidate baseline candidate
git_branch master dougqh/cache-tracer-host
git_commit_date 1774632959 1774639488
git_commit_sha a1239d3 d8d553e
release_version 1.61.0-SNAPSHOT~a1239d32d8 1.61.0-SNAPSHOT~d8d553e8c0
See matching parameters
Baseline Candidate
application insecure-bank insecure-bank
ci_job_date 1774641796 1774641796
ci_job_id 1547118311 1547118311
ci_pipeline_id 104844161 104844161
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-tlrfr9vx 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-tlrfr9vx 6.8.0-1031-aws #33~22.04.1-Ubuntu SMP Thu Jun 26 14:22:30 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux

Summary

Found 2 performance improvements and 1 performance regressions! Performance is the same for 16 metrics, 17 unstable metrics.

scenario Δ mean agg_http_req_duration_p50 Δ mean agg_http_req_duration_p95 Δ mean throughput candidate mean agg_http_req_duration_p50 candidate mean agg_http_req_duration_p95 candidate mean throughput baseline mean agg_http_req_duration_p50 baseline mean agg_http_req_duration_p95 baseline mean throughput
scenario:load:petclinic:profiling:high_load worse
[+658.154µs; +1308.319µs] or [+3.446%; +6.851%]		 same
[-331.153µs; +941.954µs] or [-1.072%; +3.050%]		 unstable
[-33.225op/s; +12.287op/s] or [-13.835%; +5.116%]		 20.081ms 31.193ms 229.688op/s 19.098ms 30.887ms 240.156op/s
scenario:load:petclinic:no_agent:high_load better
[-3.089ms; -1.799ms] or [-16.214%; -9.445%]		 better
[-5.220ms; -2.247ms] or [-16.575%; -7.133%]		 unstable
[+7.442op/s; +60.183op/s] or [+3.108%; +25.135%]		 16.604ms 27.760ms 273.250op/s 19.048ms 31.494ms 239.438op/s
Request duration reports for petclinic 
gantt
    title petclinic - request duration [CI 0.99] : candidate=1.61.0-SNAPSHOT~d8d553e8c0, baseline=1.61.0-SNAPSHOT~a1239d32d8
    dateFormat X
    axisFormat %s
section baseline
no_agent (19.497 ms) : 19295, 19699
.   : milestone, 19497,
appsec (18.658 ms) : 18470, 18846
.   : milestone, 18658,
code_origins (17.941 ms) : 17763, 18119
.   : milestone, 17941,
iast (17.766 ms) : 17590, 17942
.   : milestone, 17766,
profiling (19.437 ms) : 19238, 19636
.   : milestone, 19437,
tracing (17.623 ms) : 17447, 17798
.   : milestone, 17623,
section candidate
no_agent (17.072 ms) : 16906, 17237
.   : milestone, 17072,
appsec (18.585 ms) : 18395, 18774
.   : milestone, 18585,
code_origins (17.7 ms) : 17526, 17874
.   : milestone, 17700,
iast (17.88 ms) : 17701, 18060
.   : milestone, 17880,
profiling (20.329 ms) : 20133, 20525
.   : milestone, 20329,
tracing (17.713 ms) : 17536, 17889
.   : milestone, 17713,
Loading
  • baseline results
Variant Request duration [CI 0.99] Δ no_agent
no_agent 19.497 ms [19.295 ms, 19.699 ms] -
appsec 18.658 ms [18.47 ms, 18.846 ms] -839.353 µs (-4.3%)
code_origins 17.941 ms [17.763 ms, 18.119 ms] -1.556 ms (-8.0%)
iast 17.766 ms [17.59 ms, 17.942 ms] -1.731 ms (-8.9%)
profiling 19.437 ms [19.238 ms, 19.636 ms] -60.337 µs (-0.3%)
tracing 17.623 ms [17.447 ms, 17.798 ms] -1.875 ms (-9.6%)
  • candidate results
Variant Request duration [CI 0.99] Δ no_agent
no_agent 17.072 ms [16.906 ms, 17.237 ms] -
appsec 18.585 ms [18.395 ms, 18.774 ms] 1.513 ms (8.9%)
code_origins 17.7 ms [17.526 ms, 17.874 ms] 628.246 µs (3.7%)
iast 17.88 ms [17.701 ms, 18.06 ms] 808.659 µs (4.7%)
profiling 20.329 ms [20.133 ms, 20.525 ms] 3.258 ms (19.1%)
tracing 17.713 ms [17.536 ms, 17.889 ms] 641.017 µs (3.8%)
Request duration reports for insecure-bank 
gantt
    title insecure-bank - request duration [CI 0.99] : candidate=1.61.0-SNAPSHOT~d8d553e8c0, baseline=1.61.0-SNAPSHOT~a1239d32d8
    dateFormat X
    axisFormat %s
section baseline
no_agent (1.176 ms) : 1164, 1187
.   : milestone, 1176,
iast (3.211 ms) : 3166, 3255
.   : milestone, 3211,
iast_FULL (5.86 ms) : 5802, 5919
.   : milestone, 5860,
iast_GLOBAL (3.714 ms) : 3649, 3778
.   : milestone, 3714,
profiling (2.094 ms) : 2076, 2113
.   : milestone, 2094,
tracing (1.861 ms) : 1845, 1878
.   : milestone, 1861,
section candidate
no_agent (1.226 ms) : 1214, 1238
.   : milestone, 1226,
iast (3.229 ms) : 3185, 3273
.   : milestone, 3229,
iast_FULL (5.939 ms) : 5879, 5999
.   : milestone, 5939,
iast_GLOBAL (3.661 ms) : 3598, 3725
.   : milestone, 3661,
profiling (2.266 ms) : 2243, 2288
.   : milestone, 2266,
tracing (1.849 ms) : 1832, 1867
.   : milestone, 1849,
Loading
  • baseline results
Variant Request duration [CI 0.99] Δ no_agent
no_agent 1.176 ms [1.164 ms, 1.187 ms] -
iast 3.211 ms [3.166 ms, 3.255 ms] 2.035 ms (173.1%)
iast_FULL 5.86 ms [5.802 ms, 5.919 ms] 4.685 ms (398.4%)
iast_GLOBAL 3.714 ms [3.649 ms, 3.778 ms] 2.538 ms (215.9%)
profiling 2.094 ms [2.076 ms, 2.113 ms] 918.614 µs (78.1%)
tracing 1.861 ms [1.845 ms, 1.878 ms] 685.749 µs (58.3%)
  • candidate results
Variant Request duration [CI 0.99] Δ no_agent
no_agent 1.226 ms [1.214 ms, 1.238 ms] -
iast 3.229 ms [3.185 ms, 3.273 ms] 2.004 ms (163.5%)
iast_FULL 5.939 ms [5.879 ms, 5.999 ms] 4.713 ms (384.5%)
iast_GLOBAL 3.661 ms [3.598 ms, 3.725 ms] 2.436 ms (198.7%)
profiling 2.266 ms [2.243 ms, 2.288 ms] 1.04 ms (84.8%)
tracing 1.849 ms [1.832 ms, 1.867 ms] 623.782 µs (50.9%)

Dacapo

Parameters

Baseline Candidate
baseline_or_candidate baseline candidate
git_branch master dougqh/cache-tracer-host
git_commit_date 1774632959 1774639488
git_commit_sha a1239d3 d8d553e
release_version 1.61.0-SNAPSHOT~a1239d32d8 1.61.0-SNAPSHOT~d8d553e8c0
See matching parameters
Baseline Candidate
application biojava biojava
ci_job_date 1774641555 1774641555
ci_job_id 1547118315 1547118315
ci_pipeline_id 104844161 104844161
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-1-37k0jkgp 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-1-37k0jkgp 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 tomcat 
gantt
    title tomcat - execution time [CI 0.99] : candidate=1.61.0-SNAPSHOT~d8d553e8c0, baseline=1.61.0-SNAPSHOT~a1239d32d8
    dateFormat X
    axisFormat %s
section baseline
no_agent (1.472 ms) : 1460, 1484
.   : milestone, 1472,
appsec (3.785 ms) : 3562, 4008
.   : milestone, 3785,
iast (2.252 ms) : 2183, 2321
.   : milestone, 2252,
iast_GLOBAL (2.299 ms) : 2229, 2368
.   : milestone, 2299,
profiling (2.483 ms) : 2262, 2704
.   : milestone, 2483,
tracing (2.063 ms) : 2010, 2117
.   : milestone, 2063,
section candidate
no_agent (1.471 ms) : 1460, 1483
.   : milestone, 1471,
appsec (3.815 ms) : 3593, 4037
.   : milestone, 3815,
iast (2.254 ms) : 2185, 2323
.   : milestone, 2254,
iast_GLOBAL (2.293 ms) : 2223, 2362
.   : milestone, 2293,
profiling (2.503 ms) : 2337, 2669
.   : milestone, 2503,
tracing (2.067 ms) : 2013, 2120
.   : milestone, 2067,
Loading
  • baseline results
Variant Execution Time [CI 0.99] Δ no_agent
no_agent 1.472 ms [1.46 ms, 1.484 ms] -
appsec 3.785 ms [3.562 ms, 4.008 ms] 2.313 ms (157.1%)
iast 2.252 ms [2.183 ms, 2.321 ms] 780.125 µs (53.0%)
iast_GLOBAL 2.299 ms [2.229 ms, 2.368 ms] 826.637 µs (56.2%)
profiling 2.483 ms [2.262 ms, 2.704 ms] 1.011 ms (68.7%)
tracing 2.063 ms [2.01 ms, 2.117 ms] 591.253 µs (40.2%)
  • candidate results
Variant Execution Time [CI 0.99] Δ no_agent
no_agent 1.471 ms [1.46 ms, 1.483 ms] -
appsec 3.815 ms [3.593 ms, 4.037 ms] 2.344 ms (159.3%)
iast 2.254 ms [2.185 ms, 2.323 ms] 782.858 µs (53.2%)
iast_GLOBAL 2.293 ms [2.223 ms, 2.362 ms] 821.448 µs (55.8%)
profiling 2.503 ms [2.337 ms, 2.669 ms] 1.031 ms (70.1%)
tracing 2.067 ms [2.013 ms, 2.12 ms] 595.26 µs (40.5%)
Execution time for biojava 
gantt
    title biojava - execution time [CI 0.99] : candidate=1.61.0-SNAPSHOT~d8d553e8c0, baseline=1.61.0-SNAPSHOT~a1239d32d8
    dateFormat X
    axisFormat %s
section baseline
no_agent (15.139 s) : 15139000, 15139000
.   : milestone, 15139000,
appsec (14.685 s) : 14685000, 14685000
.   : milestone, 14685000,
iast (17.778 s) : 17778000, 17778000
.   : milestone, 17778000,
iast_GLOBAL (17.77 s) : 17770000, 17770000
.   : milestone, 17770000,
profiling (14.914 s) : 14914000, 14914000
.   : milestone, 14914000,
tracing (14.975 s) : 14975000, 14975000
.   : milestone, 14975000,
section candidate
no_agent (15.232 s) : 15232000, 15232000
.   : milestone, 15232000,
appsec (14.626 s) : 14626000, 14626000
.   : milestone, 14626000,
iast (18.032 s) : 18032000, 18032000
.   : milestone, 18032000,
iast_GLOBAL (18.113 s) : 18113000, 18113000
.   : milestone, 18113000,
profiling (14.725 s) : 14725000, 14725000
.   : milestone, 14725000,
tracing (14.765 s) : 14765000, 14765000
.   : milestone, 14765000,
Loading
  • baseline results
Variant Execution Time [CI 0.99] Δ no_agent
no_agent 15.139 s [15.139 s, 15.139 s] -
appsec 14.685 s [14.685 s, 14.685 s] -454.0 ms (-3.0%)
iast 17.778 s [17.778 s, 17.778 s] 2.639 s (17.4%)
iast_GLOBAL 17.77 s [17.77 s, 17.77 s] 2.631 s (17.4%)
profiling 14.914 s [14.914 s, 14.914 s] -225.0 ms (-1.5%)
tracing 14.975 s [14.975 s, 14.975 s] -164.0 ms (-1.1%)
  • candidate results
Variant Execution Time [CI 0.99] Δ no_agent
no_agent 15.232 s [15.232 s, 15.232 s] -
appsec 14.626 s [14.626 s, 14.626 s] -606.0 ms (-4.0%)
iast 18.032 s [18.032 s, 18.032 s] 2.8 s (18.4%)
iast_GLOBAL 18.113 s [18.113 s, 18.113 s] 2.881 s (18.9%)
profiling 14.725 s [14.725 s, 14.725 s] -507.0 ms (-3.3%)
tracing 14.765 s [14.765 s, 14.765 s] -467.0 ms (-3.1%)

dougqh
dougqh commented Mar 25, 2026
View reviewed changes
dd-trace-core/src/main/java/datadog/trace/core/tagprocessor/RemoteHostnameAdder.java
}

String hostname = hostnameSupplier.get();
if (hostname == null) {
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@dougqh dougqh Mar 25, 2026

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This is subtle change in behavior from before.
TagMap.put would have failed with an exception when given null.

I've decided to just ignore hostnameSupplier.get returning null instead.

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