Add processor context for hotspot crash tracking by bric3 · Pull Request #10867 · DataDog/dd-trace-java

bric3 · 2026-03-17T10:50:57Z

What Does This Do

Adds the registry of the processor from the Hotspot crash log, in the experimental field:

Json example Error tracking screenshot

"experimental":{
  "ucontext":{
    "RAX":"0x00007f36ccfbf170",
    "RBX":"0x000000008fd66048",
    "RCX":"0x0000000000000758",
    "RDX":"0x0000000000000008",
    "RSP":"0x00007f35e6253190",
    "RBP":"0x00007f35e6253220",
    "RSI":"0x00007f3639c2ff00",
    "RDI":"0x0000000000000000",
    "R8":"0x00007f37a16e2590",
    "R9":"0x00007f37a16e25a0",
    "R10":"0x00000000000008dd",
    "R11":"0x00007f3744198b70",
    "R12":"0x0000000000000000",
    "R13":"0x00007f35e6254750",
    "R14":"0x00007f3639c2ff00",
    "R15":"0x00007f35e6253320",
    "RIP":"0x00007f37a18bc187",
    "EFLAGS":"0x0000000000010286",
    "CSGSFS":"0x002b000000000033",
    "ERR":"0x0000000000000004",
    "TRAPNO":"0x000000000000000e"
  }
}

Motivation

Additional information

ucontext_t is a POSIX struct passed to signal handlers (third argument when using SA_SIGINFO). It captures the complete CPU state at the exact moment the signal was raised — i.e., at the point of crash. The JVM emits this information under the Registers section in the crash log.

Links to different os::print_context implementations

Test script

#!/usr/bin/env zsh
# End-to-end crashtracking test: crashes the JVM via null dereference (SIGSEGV)
# and verifies telemetry is sent to the local Datadog agent.
set -euo pipefail

SCRIPT_DIR="$(cd "$(dirname "$0")" && pwd)"

_jars=("$SCRIPT_DIR"/dd-java-agent/build/libs/dd-java-agent-*.jar(N))
if [[ ${#_jars[@]} -eq 0 ]]; then
  echo "Agent jar not found — run: ./gradlew :dd-java-agent:shadowJar" >&2
  exit 1
elif [[ ${#_jars[@]} -gt 1 ]]; then
  echo "Multiple agent jars found, expected exactly one:" >&2
  printf '  %s\n' "${_jars[@]}" >&2
  exit 1
fi
AGENT_JAR="${_jars[0]}"
echo "==> Agent: $AGENT_JAR"

WORK_DIR=$(mktemp -d)
echo "==> Workdir: $WORK_DIR"

cat > "$WORK_DIR/NullDeref.java" <<'EOF'
import java.lang.foreign.MemorySegment;
import java.lang.foreign.ValueLayout;
import java.nio.file.Files;
import java.nio.file.Path;

class NullDeref {
  public static void main(String[] args) throws Exception {
    // Wait for agent to write the crash uploader script before crashing
    String scriptPath = System.getProperty("dd.test.crash_script");
    if (scriptPath != null) {
      Path script = Path.of(scriptPath);
      System.out.println("Waiting for agent to write: " + script);
      long deadline = System.nanoTime() + 15_000_000_000L;
      while (!Files.exists(script) && System.nanoTime() < deadline) {
        Thread.sleep(200);
      }
      System.out.println(Files.exists(script) ? "Script ready." : "Timeout — crashing anyway.");
    }
    System.out.println("Dereferencing null address via MemorySegment...");
    // reinterpret(Long.BYTES) bypasses bounds checks, triggering SIGSEGV at address 0
    MemorySegment.ofAddress(0).reinterpret(Long.BYTES).get(ValueLayout.JAVA_LONG, 0);
  }
}
EOF

CRASH_SCRIPT="$WORK_DIR/dd_crash_uploader.sh"

DD_TRACE_AGENT_PORT=8136 \
DD_DOGSTATSD_PORT=8135 \
mise exec java@25 -- java \
  --source 25 \
  --enable-native-access=ALL-UNNAMED \
  -javaagent:"$AGENT_JAR" \
  "-XX:OnError=$CRASH_SCRIPT %p" \
  "-XX:ErrorFile=$WORK_DIR/hs_err_%p.log" \
  -Ddd.test.crash_script="$CRASH_SCRIPT" \
  -Ddd.dogstatsd.start-delay=0 \
  -Ddd.service=crashtest-local \
  -Ddd.crashtracking.errors-intake.enabled=true \
  -Ddd.env=local \
  -Ddd.trace.enabled=false \
  "$WORK_DIR/NullDeref.java" || true

echo ""
echo "==> Files in $WORK_DIR:"
ls -la "$WORK_DIR/" 2>/dev/null || echo "(empty)"

pr-commenter · 2026-03-17T11:35:15Z

Benchmarks

Startup

Parameters

	Baseline	Candidate
baseline_or_candidate	baseline	candidate
git_branch	master	bdu/processor-context
git_commit_date	1773914838	1773916159
git_commit_sha	`f452dff`	`9b3b0aa`
release_version	1.61.0-SNAPSHOT~f452dffb47	1.61.0-SNAPSHOT~9b3b0aaa0c

See matching parameters

	Baseline	Candidate
application	insecure-bank	insecure-bank
ci_job_date	1773917861	1773917861
ci_job_id	1520777450	1520777450
ci_pipeline_id	103453666	103453666
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-xu6p3rpc 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-xu6p3rpc 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 63 metrics, 8 unstable metrics.

Startup time reports for insecure-bank

gantt
    title insecure-bank - global startup overhead: candidate=1.61.0-SNAPSHOT~9b3b0aaa0c, baseline=1.61.0-SNAPSHOT~f452dffb47

    dateFormat X
    axisFormat %s
section tracing
Agent [baseline] (1.057 s) : 0, 1057464
Total [baseline] (8.837 s) : 0, 8837379
Agent [candidate] (1.056 s) : 0, 1055837
Total [candidate] (8.852 s) : 0, 8851542
section iast
Agent [baseline] (1.226 s) : 0, 1226367
Total [baseline] (9.537 s) : 0, 9537276
Agent [candidate] (1.238 s) : 0, 1237556
Total [candidate] (9.556 s) : 0, 9555769

baseline results

Module	Variant	Duration	Δ tracing
Agent	tracing	1.057 s	-
Agent	iast	1.226 s	168.903 ms (16.0%)
Total	tracing	8.837 s	-
Total	iast	9.537 s	699.896 ms (7.9%)

candidate results

Module	Variant	Duration	Δ tracing
Agent	tracing	1.056 s	-
Agent	iast	1.238 s	181.718 ms (17.2%)
Total	tracing	8.852 s	-
Total	iast	9.556 s	704.226 ms (8.0%)

gantt
    title insecure-bank - break down per module: candidate=1.61.0-SNAPSHOT~9b3b0aaa0c, baseline=1.61.0-SNAPSHOT~f452dffb47

    dateFormat X
    axisFormat %s
section tracing
crashtracking [baseline] (1.19 ms) : 0, 1190
crashtracking [candidate] (1.18 ms) : 0, 1180
BytebuddyAgent [baseline] (630.007 ms) : 0, 630007
BytebuddyAgent [candidate] (628.493 ms) : 0, 628493
AgentMeter [baseline] (29.098 ms) : 0, 29098
AgentMeter [candidate] (29.196 ms) : 0, 29196
GlobalTracer [baseline] (257.172 ms) : 0, 257172
GlobalTracer [candidate] (256.958 ms) : 0, 256958
AppSec [baseline] (31.641 ms) : 0, 31641
AppSec [candidate] (31.765 ms) : 0, 31765
Debugger [baseline] (59.525 ms) : 0, 59525
Debugger [candidate] (59.257 ms) : 0, 59257
Remote Config [baseline] (582.562 µs) : 0, 583
Remote Config [candidate] (580.656 µs) : 0, 581
Telemetry [baseline] (8.722 ms) : 0, 8722
Telemetry [candidate] (8.858 ms) : 0, 8858
Flare Poller [baseline] (3.521 ms) : 0, 3521
Flare Poller [candidate] (3.531 ms) : 0, 3531
section iast
crashtracking [baseline] (1.213 ms) : 0, 1213
crashtracking [candidate] (1.198 ms) : 0, 1198
BytebuddyAgent [baseline] (796.186 ms) : 0, 796186
BytebuddyAgent [candidate] (804.207 ms) : 0, 804207
AgentMeter [baseline] (11.302 ms) : 0, 11302
AgentMeter [candidate] (11.619 ms) : 0, 11619
GlobalTracer [baseline] (247.016 ms) : 0, 247016
GlobalTracer [candidate] (248.715 ms) : 0, 248715
IAST [baseline] (25.245 ms) : 0, 25245
IAST [candidate] (25.549 ms) : 0, 25549
AppSec [baseline] (26.419 ms) : 0, 26419
AppSec [candidate] (26.793 ms) : 0, 26793
Debugger [baseline] (68.569 ms) : 0, 68569
Debugger [candidate] (69.582 ms) : 0, 69582
Remote Config [baseline] (522.723 µs) : 0, 523
Remote Config [candidate] (529.384 µs) : 0, 529
Telemetry [baseline] (10.254 ms) : 0, 10254
Telemetry [candidate] (9.697 ms) : 0, 9697
Flare Poller [baseline] (3.658 ms) : 0, 3658
Flare Poller [candidate] (3.459 ms) : 0, 3459

Startup time reports for petclinic

gantt
    title petclinic - global startup overhead: candidate=1.61.0-SNAPSHOT~9b3b0aaa0c, baseline=1.61.0-SNAPSHOT~f452dffb47

    dateFormat X
    axisFormat %s
section tracing
Agent [baseline] (1.058 s) : 0, 1057696
Total [baseline] (11.134 s) : 0, 11134246
Agent [candidate] (1.058 s) : 0, 1057555
Total [candidate] (11.136 s) : 0, 11135836
section appsec
Agent [baseline] (1.246 s) : 0, 1245868
Total [baseline] (11.14 s) : 0, 11139687
Agent [candidate] (1.245 s) : 0, 1244656
Total [candidate] (11.117 s) : 0, 11117377
section iast
Agent [baseline] (1.237 s) : 0, 1236763
Total [baseline] (11.294 s) : 0, 11294123
Agent [candidate] (1.228 s) : 0, 1227507
Total [candidate] (11.313 s) : 0, 11313084
section profiling
Agent [baseline] (1.184 s) : 0, 1183901
Total [baseline] (11.057 s) : 0, 11056811
Agent [candidate] (1.179 s) : 0, 1178958
Total [candidate] (10.93 s) : 0, 10929773

baseline results

Module	Variant	Duration	Δ tracing
Agent	tracing	1.058 s	-
Agent	appsec	1.246 s	188.172 ms (17.8%)
Agent	iast	1.237 s	179.066 ms (16.9%)
Agent	profiling	1.184 s	126.205 ms (11.9%)
Total	tracing	11.134 s	-
Total	appsec	11.14 s	5.441 ms (0.0%)
Total	iast	11.294 s	159.876 ms (1.4%)
Total	profiling	11.057 s	-77.436 ms (-0.7%)

candidate results

Module	Variant	Duration	Δ tracing
Agent	tracing	1.058 s	-
Agent	appsec	1.245 s	187.101 ms (17.7%)
Agent	iast	1.228 s	169.951 ms (16.1%)
Agent	profiling	1.179 s	121.403 ms (11.5%)
Total	tracing	11.136 s	-
Total	appsec	11.117 s	-18.459 ms (-0.2%)
Total	iast	11.313 s	177.248 ms (1.6%)
Total	profiling	10.93 s	-206.063 ms (-1.9%)

gantt
    title petclinic - break down per module: candidate=1.61.0-SNAPSHOT~9b3b0aaa0c, baseline=1.61.0-SNAPSHOT~f452dffb47

    dateFormat X
    axisFormat %s
section tracing
crashtracking [baseline] (1.192 ms) : 0, 1192
crashtracking [candidate] (1.193 ms) : 0, 1193
BytebuddyAgent [baseline] (628.884 ms) : 0, 628884
BytebuddyAgent [candidate] (629.494 ms) : 0, 629494
AgentMeter [baseline] (29.291 ms) : 0, 29291
AgentMeter [candidate] (29.231 ms) : 0, 29231
GlobalTracer [baseline] (257.379 ms) : 0, 257379
GlobalTracer [candidate] (257.47 ms) : 0, 257470
AppSec [baseline] (31.764 ms) : 0, 31764
AppSec [candidate] (31.657 ms) : 0, 31657
Debugger [baseline] (60.307 ms) : 0, 60307
Debugger [candidate] (60.398 ms) : 0, 60398
Remote Config [baseline] (583.14 µs) : 0, 583
Remote Config [candidate] (601.875 µs) : 0, 602
Telemetry [baseline] (8.752 ms) : 0, 8752
Telemetry [candidate] (8.045 ms) : 0, 8045
Flare Poller [baseline] (3.562 ms) : 0, 3562
Flare Poller [candidate] (3.51 ms) : 0, 3510
section appsec
crashtracking [baseline] (1.227 ms) : 0, 1227
crashtracking [candidate] (1.182 ms) : 0, 1182
BytebuddyAgent [baseline] (657.708 ms) : 0, 657708
BytebuddyAgent [candidate] (657.592 ms) : 0, 657592
AgentMeter [baseline] (12.018 ms) : 0, 12018
AgentMeter [candidate] (11.989 ms) : 0, 11989
GlobalTracer [baseline] (257.841 ms) : 0, 257841
GlobalTracer [candidate] (257.715 ms) : 0, 257715
IAST [baseline] (24.165 ms) : 0, 24165
IAST [candidate] (24.097 ms) : 0, 24097
AppSec [baseline] (177.659 ms) : 0, 177659
AppSec [candidate] (177.259 ms) : 0, 177259
Debugger [baseline] (66.456 ms) : 0, 66456
Debugger [candidate] (66.147 ms) : 0, 66147
Remote Config [baseline] (618.16 µs) : 0, 618
Remote Config [candidate] (615.585 µs) : 0, 616
Telemetry [baseline] (8.339 ms) : 0, 8339
Telemetry [candidate] (8.305 ms) : 0, 8305
Flare Poller [baseline] (3.639 ms) : 0, 3639
Flare Poller [candidate] (3.599 ms) : 0, 3599
section iast
crashtracking [baseline] (1.194 ms) : 0, 1194
crashtracking [candidate] (1.187 ms) : 0, 1187
BytebuddyAgent [baseline] (801.957 ms) : 0, 801957
BytebuddyAgent [candidate] (796.651 ms) : 0, 796651
AgentMeter [baseline] (11.404 ms) : 0, 11404
AgentMeter [candidate] (11.315 ms) : 0, 11315
GlobalTracer [baseline] (249.453 ms) : 0, 249453
GlobalTracer [candidate] (247.297 ms) : 0, 247297
IAST [baseline] (25.598 ms) : 0, 25598
IAST [candidate] (25.252 ms) : 0, 25252
AppSec [baseline] (27.751 ms) : 0, 27751
AppSec [candidate] (26.467 ms) : 0, 26467
Debugger [baseline] (70.222 ms) : 0, 70222
Debugger [candidate] (70.352 ms) : 0, 70352
Remote Config [baseline] (534.633 µs) : 0, 535
Remote Config [candidate] (531.053 µs) : 0, 531
Telemetry [baseline] (9.251 ms) : 0, 9251
Telemetry [candidate] (9.158 ms) : 0, 9158
Flare Poller [baseline] (3.358 ms) : 0, 3358
Flare Poller [candidate] (3.321 ms) : 0, 3321
section profiling
crashtracking [baseline] (1.174 ms) : 0, 1174
crashtracking [candidate] (1.171 ms) : 0, 1171
BytebuddyAgent [baseline] (682.747 ms) : 0, 682747
BytebuddyAgent [candidate] (681.197 ms) : 0, 681197
AgentMeter [baseline] (8.675 ms) : 0, 8675
AgentMeter [candidate] (8.662 ms) : 0, 8662
GlobalTracer [baseline] (215.896 ms) : 0, 215896
GlobalTracer [candidate] (214.709 ms) : 0, 214709
AppSec [baseline] (32.279 ms) : 0, 32279
AppSec [candidate] (32.012 ms) : 0, 32012
Debugger [baseline] (63.905 ms) : 0, 63905
Debugger [candidate] (62.464 ms) : 0, 62464
Remote Config [baseline] (573.933 µs) : 0, 574
Remote Config [candidate] (573.077 µs) : 0, 573
Telemetry [baseline] (10.042 ms) : 0, 10042
Telemetry [candidate] (10.822 ms) : 0, 10822
Flare Poller [baseline] (3.538 ms) : 0, 3538
Flare Poller [candidate] (3.475 ms) : 0, 3475
ProfilingAgent [baseline] (94.31 ms) : 0, 94310
ProfilingAgent [candidate] (93.266 ms) : 0, 93266
Profiling [baseline] (94.884 ms) : 0, 94884
Profiling [candidate] (93.812 ms) : 0, 93812

Load

Parameters

	Baseline	Candidate
baseline_or_candidate	baseline	candidate
git_branch	master	bdu/processor-context
git_commit_date	1773914838	1773916159
git_commit_sha	`f452dff`	`9b3b0aa`
release_version	1.61.0-SNAPSHOT~f452dffb47	1.61.0-SNAPSHOT~9b3b0aaa0c

See matching parameters

	Baseline	Candidate
application	insecure-bank	insecure-bank
ci_job_date	1773918339	1773918339
ci_job_id	1520777451	1520777451
ci_pipeline_id	103453666	103453666
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-pkm0gerp 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-pkm0gerp 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 5 performance improvements and 3 performance regressions! Performance is the same for 11 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:insecure-bank:profiling:high_load	better [-195.606µs; -40.302µs] or [-11.049%; -2.277%]	unstable [-1485.269µs; -486.371µs] or [-26.625%; -8.719%]	unstable [-15.722op/s; +535.659op/s] or [-0.788%; +26.845%]	1.652ms	4.593ms	2255.344op/s	1.770ms	5.578ms	1995.375op/s
scenario:load:insecure-bank:iast_GLOBAL:high_load	better [-235.064µs; -74.986µs] or [-7.951%; -2.536%]	unsure [-746.365µs; -116.557µs] or [-8.877%; -1.386%]	unstable [-76.279op/s; +204.717op/s] or [-6.248%; +16.769%]	2.801ms	7.976ms	1285.031op/s	2.956ms	8.407ms	1220.812op/s
scenario:load:insecure-bank:iast_FULL:high_load	better [-721.742µs; -382.738µs] or [-13.067%; -6.929%]	better [-1.630ms; -0.892ms] or [-12.387%; -6.777%]	unstable [-5.897op/s; +164.335op/s] or [-0.793%; +22.108%]	4.971ms	11.899ms	822.562op/s	5.523ms	13.160ms	743.344op/s
scenario:load:petclinic:appsec:high_load	worse [+0.680ms; +2.064ms] or [+3.672%; +11.140%]	unsure [+0.403ms; +2.070ms] or [+1.336%; +6.867%]	unstable [-39.314op/s; +15.627op/s] or [-15.939%; +6.335%]	19.900ms	31.386ms	234.812op/s	18.528ms	30.150ms	246.656op/s
scenario:load:petclinic:tracing:high_load	worse [+1.088ms; +1.772ms] or [+6.226%; +10.145%]	worse [+0.916ms; +1.996ms] or [+3.155%; +6.880%]	unstable [-44.329op/s; +12.892op/s] or [-17.050%; +4.958%]	18.898ms	30.473ms	244.281op/s	17.468ms	29.018ms	260.000op/s
scenario:load:petclinic:no_agent:high_load	better [-2.008ms; -0.431ms] or [-10.676%; -2.290%]	unstable [-3.052ms; +0.502ms] or [-9.908%; +1.631%]	unstable [-14.040op/s; +46.790op/s] or [-5.764%; +19.211%]	17.594ms	29.524ms	259.938op/s	18.814ms	30.799ms	243.562op/s

Request duration reports for petclinic

gantt
    title petclinic - request duration [CI 0.99] : candidate=1.61.0-SNAPSHOT~9b3b0aaa0c, baseline=1.61.0-SNAPSHOT~f452dffb47
    dateFormat X
    axisFormat %s
section baseline
no_agent (19.162 ms) : 18970, 19355
.   : milestone, 19162,
appsec (18.922 ms) : 18728, 19117
.   : milestone, 18922,
code_origins (17.944 ms) : 17763, 18124
.   : milestone, 17944,
iast (17.922 ms) : 17740, 18103
.   : milestone, 17922,
profiling (18.7 ms) : 18513, 18886
.   : milestone, 18700,
tracing (17.945 ms) : 17764, 18125
.   : milestone, 17945,
section candidate
no_agent (17.954 ms) : 17768, 18141
.   : milestone, 17954,
appsec (19.887 ms) : 19682, 20092
.   : milestone, 19887,
code_origins (18.598 ms) : 18409, 18787
.   : milestone, 18598,
iast (17.8 ms) : 17622, 17977
.   : milestone, 17800,
profiling (18.731 ms) : 18547, 18915
.   : milestone, 18731,
tracing (19.109 ms) : 18916, 19302
.   : milestone, 19109,

baseline results

Variant	Request duration [CI 0.99]	Δ no_agent
no_agent	19.162 ms [18.97 ms, 19.355 ms]	-
appsec	18.922 ms [18.728 ms, 19.117 ms]	-239.923 µs (-1.3%)
code_origins	17.944 ms [17.763 ms, 18.124 ms]	-1.219 ms (-6.4%)
iast	17.922 ms [17.74 ms, 18.103 ms]	-1.241 ms (-6.5%)
profiling	18.7 ms [18.513 ms, 18.886 ms]	-462.605 µs (-2.4%)
tracing	17.945 ms [17.764 ms, 18.125 ms]	-1.218 ms (-6.4%)

candidate results

Variant	Request duration [CI 0.99]	Δ no_agent
no_agent	17.954 ms [17.768 ms, 18.141 ms]	-
appsec	19.887 ms [19.682 ms, 20.092 ms]	1.932 ms (10.8%)
code_origins	18.598 ms [18.409 ms, 18.787 ms]	643.67 µs (3.6%)
iast	17.8 ms [17.622 ms, 17.977 ms]	-154.935 µs (-0.9%)
profiling	18.731 ms [18.547 ms, 18.915 ms]	776.37 µs (4.3%)
tracing	19.109 ms [18.916 ms, 19.302 ms]	1.155 ms (6.4%)

Request duration reports for insecure-bank

gantt
    title insecure-bank - request duration [CI 0.99] : candidate=1.61.0-SNAPSHOT~9b3b0aaa0c, baseline=1.61.0-SNAPSHOT~f452dffb47
    dateFormat X
    axisFormat %s
section baseline
no_agent (1.168 ms) : 1157, 1179
.   : milestone, 1168,
iast (3.189 ms) : 3145, 3232
.   : milestone, 3189,
iast_FULL (6.226 ms) : 6162, 6290
.   : milestone, 6226,
iast_GLOBAL (3.761 ms) : 3700, 3822
.   : milestone, 3761,
profiling (2.271 ms) : 2247, 2296
.   : milestone, 2271,
tracing (1.825 ms) : 1810, 1840
.   : milestone, 1825,
section candidate
no_agent (1.181 ms) : 1170, 1192
.   : milestone, 1181,
iast (3.252 ms) : 3208, 3296
.   : milestone, 3252,
iast_FULL (5.618 ms) : 5563, 5674
.   : milestone, 5618,
iast_GLOBAL (3.569 ms) : 3521, 3618
.   : milestone, 3569,
profiling (2.001 ms) : 1984, 2018
.   : milestone, 2001,
tracing (1.782 ms) : 1768, 1797
.   : milestone, 1782,

baseline results

Variant	Request duration [CI 0.99]	Δ no_agent
no_agent	1.168 ms [1.157 ms, 1.179 ms]	-
iast	3.189 ms [3.145 ms, 3.232 ms]	2.021 ms (173.0%)
iast_FULL	6.226 ms [6.162 ms, 6.29 ms]	5.058 ms (433.0%)
iast_GLOBAL	3.761 ms [3.7 ms, 3.822 ms]	2.593 ms (221.9%)
profiling	2.271 ms [2.247 ms, 2.296 ms]	1.103 ms (94.5%)
tracing	1.825 ms [1.81 ms, 1.84 ms]	657.167 µs (56.3%)

candidate results

Variant	Request duration [CI 0.99]	Δ no_agent
no_agent	1.181 ms [1.17 ms, 1.192 ms]	-
iast	3.252 ms [3.208 ms, 3.296 ms]	2.071 ms (175.4%)
iast_FULL	5.618 ms [5.563 ms, 5.674 ms]	4.437 ms (375.7%)
iast_GLOBAL	3.569 ms [3.521 ms, 3.618 ms]	2.388 ms (202.2%)
profiling	2.001 ms [1.984 ms, 2.018 ms]	819.858 µs (69.4%)
tracing	1.782 ms [1.768 ms, 1.797 ms]	601.367 µs (50.9%)

Dacapo

Parameters

	Baseline	Candidate
baseline_or_candidate	baseline	candidate
git_branch	master	bdu/processor-context
git_commit_date	1773914838	1773916159
git_commit_sha	`f452dff`	`9b3b0aa`
release_version	1.61.0-SNAPSHOT~f452dffb47	1.61.0-SNAPSHOT~9b3b0aaa0c

See matching parameters

	Baseline	Candidate
application	biojava	biojava
ci_job_date	1773918149	1773918149
ci_job_id	1520777452	1520777452
ci_pipeline_id	103453666	103453666
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-xv5o0ohx 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-xv5o0ohx 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 12 metrics, 0 unstable metrics.

Execution time for tomcat

gantt
    title tomcat - execution time [CI 0.99] : candidate=1.61.0-SNAPSHOT~9b3b0aaa0c, baseline=1.61.0-SNAPSHOT~f452dffb47
    dateFormat X
    axisFormat %s
section baseline
no_agent (1.472 ms) : 1461, 1483
.   : milestone, 1472,
appsec (2.571 ms) : 2514, 2629
.   : milestone, 2571,
iast (2.254 ms) : 2185, 2323
.   : milestone, 2254,
iast_GLOBAL (2.306 ms) : 2237, 2376
.   : milestone, 2306,
profiling (2.09 ms) : 2035, 2145
.   : milestone, 2090,
tracing (2.053 ms) : 2000, 2107
.   : milestone, 2053,
section candidate
no_agent (1.472 ms) : 1460, 1484
.   : milestone, 1472,
appsec (2.511 ms) : 2457, 2566
.   : milestone, 2511,
iast (2.257 ms) : 2187, 2327
.   : milestone, 2257,
iast_GLOBAL (2.296 ms) : 2226, 2365
.   : milestone, 2296,
profiling (2.085 ms) : 2030, 2140
.   : milestone, 2085,
tracing (2.052 ms) : 1998, 2105
.   : milestone, 2052,

baseline results

Variant	Execution Time [CI 0.99]	Δ no_agent
no_agent	1.472 ms [1.461 ms, 1.483 ms]	-
appsec	2.571 ms [2.514 ms, 2.629 ms]	1.099 ms (74.7%)
iast	2.254 ms [2.185 ms, 2.323 ms]	782.152 µs (53.1%)
iast_GLOBAL	2.306 ms [2.237 ms, 2.376 ms]	834.31 µs (56.7%)
profiling	2.09 ms [2.035 ms, 2.145 ms]	617.596 µs (42.0%)
tracing	2.053 ms [2.0 ms, 2.107 ms]	581.395 µs (39.5%)

candidate results

Variant	Execution Time [CI 0.99]	Δ no_agent
no_agent	1.472 ms [1.46 ms, 1.484 ms]	-
appsec	2.511 ms [2.457 ms, 2.566 ms]	1.039 ms (70.6%)
iast	2.257 ms [2.187 ms, 2.327 ms]	785.043 µs (53.3%)
iast_GLOBAL	2.296 ms [2.226 ms, 2.365 ms]	823.619 µs (56.0%)
profiling	2.085 ms [2.03 ms, 2.14 ms]	612.832 µs (41.6%)
tracing	2.052 ms [1.998 ms, 2.105 ms]	579.616 µs (39.4%)

Execution time for biojava

gantt
    title biojava - execution time [CI 0.99] : candidate=1.61.0-SNAPSHOT~9b3b0aaa0c, baseline=1.61.0-SNAPSHOT~f452dffb47
    dateFormat X
    axisFormat %s
section baseline
no_agent (15.017 s) : 15017000, 15017000
.   : milestone, 15017000,
appsec (14.905 s) : 14905000, 14905000
.   : milestone, 14905000,
iast (17.987 s) : 17987000, 17987000
.   : milestone, 17987000,
iast_GLOBAL (17.908 s) : 17908000, 17908000
.   : milestone, 17908000,
profiling (15.332 s) : 15332000, 15332000
.   : milestone, 15332000,
tracing (14.898 s) : 14898000, 14898000
.   : milestone, 14898000,
section candidate
no_agent (15.003 s) : 15003000, 15003000
.   : milestone, 15003000,
appsec (14.564 s) : 14564000, 14564000
.   : milestone, 14564000,
iast (18.319 s) : 18319000, 18319000
.   : milestone, 18319000,
iast_GLOBAL (17.748 s) : 17748000, 17748000
.   : milestone, 17748000,
profiling (14.927 s) : 14927000, 14927000
.   : milestone, 14927000,
tracing (14.818 s) : 14818000, 14818000
.   : milestone, 14818000,

baseline results

Variant	Execution Time [CI 0.99]	Δ no_agent
no_agent	15.017 s [15.017 s, 15.017 s]	-
appsec	14.905 s [14.905 s, 14.905 s]	-112.0 ms (-0.7%)
iast	17.987 s [17.987 s, 17.987 s]	2.97 s (19.8%)
iast_GLOBAL	17.908 s [17.908 s, 17.908 s]	2.891 s (19.3%)
profiling	15.332 s [15.332 s, 15.332 s]	315.0 ms (2.1%)
tracing	14.898 s [14.898 s, 14.898 s]	-119.0 ms (-0.8%)

candidate results

Variant	Execution Time [CI 0.99]	Δ no_agent
no_agent	15.003 s [15.003 s, 15.003 s]	-
appsec	14.564 s [14.564 s, 14.564 s]	-439.0 ms (-2.9%)
iast	18.319 s [18.319 s, 18.319 s]	3.316 s (22.1%)
iast_GLOBAL	17.748 s [17.748 s, 17.748 s]	2.745 s (18.3%)
profiling	14.927 s [14.927 s, 14.927 s]	-76.0 ms (-0.5%)
tracing	14.818 s [14.818 s, 14.818 s]	-185.0 ms (-1.2%)

github-actions · 2026-03-18T16:14:41Z

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.

JVM signal handlers produce different output / formats depending on the platform. For example an Linux-x64 will of course have different register names, but they will be formated as four per line, while the linux-aarch64 will use one register per line. Links to different `os::print_context` implementations * https://github.com/openjdk/jdk/blob/master/src/hotspot/os_cpu/linux_x86/os_linux_x86.cpp#L419 * https://github.com/openjdk/jdk/blob/master/src/hotspot/os_cpu/linux_aarch64/os_linux_aarch64.cpp#L341 * https://github.com/openjdk/jdk/blob/master/src/hotspot/os_cpu/bsd_x86/os_bsd_x86.cpp#L601 * https://github.com/openjdk/jdk/blob/master/src/hotspot/os_cpu/bsd_aarch64/os_bsd_aarch64.cpp#L464

amarziali

nice work!

amarziali · 2026-03-23T09:00:42Z

...t/agent-crashtracking/src/main/java/datadog/crashtracking/parsers/HotspotCrashLogParser.java

+ * and subsequent sections such as {@code siginfo} and registers will be silently skipped. The
+ * resulting {@link datadog.crashtracking.dto.CrashLog} will be marked {@code incomplete}.
+ */
 public final class HotspotCrashLogParser {


J9JavacoreParser should also be also maintained here (if applicable) - but it can be done in a follow up PR

amarziali · 2026-03-23T09:01:47Z

dd-java-agent/agent-crashtracking/src/test/resources/sample-crash-macos-aarch64.txt

+No events
+
+Dll operation events (5 events):
+Event: 0.013 Loaded shared library /Users/brice.dutheil/.local/share/mise/installs/java/25.0.2/lib/libjava.dylib


Idnk if you want to strip those paths (or not)

Good spot, let's remove them

bric3 force-pushed the bdu/processor-context branch from f964abb to 87823ae Compare March 17, 2026 12:48

bric3 marked this pull request as ready for review March 18, 2026 16:14

bric3 requested a review from a team as a code owner March 18, 2026 16:14

bric3 force-pushed the bdu/processor-context branch from 8c8bf53 to 74c1391 Compare March 19, 2026 09:07

bric3 added type: enhancement Enhancements and improvements comp: crash tracking Crash Tracking labels Mar 19, 2026

bric3 added 2 commits March 19, 2026 11:29

chore: Add processor context for hotspot crash tracking

8e0a6d7

bric3 force-pushed the bdu/processor-context branch from 74c1391 to 9b3b0aa Compare March 19, 2026 10:29

bric3 requested a review from amarziali March 19, 2026 15:48

amarziali approved these changes Mar 23, 2026

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Add processor context for hotspot crash tracking#10867

Add processor context for hotspot crash tracking#10867
bric3 wants to merge 2 commits intomasterfrom
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