feat(llmobs): distributed tracing for mcp #14045

lievan · 2025-07-17T12:51:14Z

This PR implements distributed tracing between client/server tool calls for APM and LLM Obs by

wrapping around send_request
injecting distributed headers in a _meta field in the request
fetching distributed headers from the context argument in ToolManager.call_tool

Distributed tracing is toggled via DD_MCP_DISTRIBUTED_TRACING=True/False, and defaults to True

This is also how openinference/otel do it
lastmile-ai/mcp-agent#239
modelcontextprotocol/modelcontextprotocol#246 (comment)
For reference, here is the meta field in the mcp sdk

APM distributed tracing is not included in this pr

Example script

import asyncio
import os
from mcp.server.fastmcp import FastMCP
from mcp.shared.memory import create_connected_server_and_client_session
from ddtrace.llmobs import LLMObs


LLMObs.enable(
    site="datad0g.com",
    api_key=os.environ.get("DD_API_KEY_STAGING", "test-key"),
    ml_app="mcp-distributed-tracing-example",
    agentless_enabled=True,
)

mcp = FastMCP("Calculator Server")

@mcp.tool()
def calculator(operation: str, a: float, b: float) -> dict:
    operations = {
        "add": lambda x, y: x + y,
        "subtract": lambda x, y: x - y,
        "multiply": lambda x, y: x * y,
        "divide": lambda x, y: x / y if y != 0 else "Error: Division by zero",
    }

    if operation not in operations:
        return {"error": f"Unknown operation: {operation}"}

    result = operations[operation](a, b)
    return {"operation": operation, "a": a, "b": b, "result": result}


async def demo_distributed_tracing():
    async with create_connected_server_and_client_session(mcp._mcp_server) as client:
        operations = [
            {"operation": "add", "a": 10, "b": 5},
            {"operation": "multiply", "a": 7, "b": 8},
            {"operation": "divide", "a": 100, "b": 4},
        ]        
        for i, params in enumerate(operations, 1):
            print(f"\nTool Call {i}: {params['operation']}({params['a']}, {params['b']})")
            result = await client.call_tool("calculator", params)
            print(f"Result: {result.model_dump()}")

if __name__ == "__main__":
    asyncio.run(demo_distributed_tracing())

Resulting trace:

Checklist

PR author has checked that all the criteria below are met
The PR description includes an overview of the change
The PR description articulates the motivation for the change
The change includes tests OR the PR description describes a testing strategy
The PR description notes risks associated with the change, if any
Newly-added code is easy to change
The change follows the library release note guidelines
The change includes or references documentation updates if necessary
Backport labels are set (if applicable)

Reviewer Checklist

Reviewer has checked that all the criteria below are met
Title is accurate
All changes are related to the pull request's stated goal
Avoids breaking API changes
Testing strategy adequately addresses listed risks
Newly-added code is easy to change
Release note makes sense to a user of the library
If necessary, author has acknowledged and discussed the performance implications of this PR as reported in the benchmarks PR comment
Backport labels are set in a manner that is consistent with the release branch maintenance policy

github-actions · 2025-07-17T12:51:48Z

CODEOWNERS have been resolved as:

releasenotes/notes/trace-mcp-distributed-tracing-fa5df4e00ab94b36.yaml  @DataDog/apm-python
.github/CODEOWNERS                                                      @DataDog/python-guild @DataDog/apm-core-python
ddtrace/contrib/internal/mcp/__init__.py                                @DataDog/ml-observability
ddtrace/contrib/internal/mcp/patch.py                                   @DataDog/ml-observability
tests/contrib/mcp/conftest.py                                           @DataDog/ml-observability
tests/contrib/mcp/test_mcp_llmobs.py                                    @DataDog/ml-observability
tests/contrib/mcp/test_mcp_patch.py                                     @DataDog/ml-observability
tests/snapshots/tests.contrib.mcp.test_mcp.test_mcp_tool_call.json      @DataDog/apm-python
tests/snapshots/tests.contrib.mcp.test_mcp.test_mcp_tool_error.json     @DataDog/apm-python

brettlangdon

do we need to add ddtrace/contrib/internal/mcp and tests/contrib/mcp to CODEOWNERS for llmobs?

github-actions · 2025-07-17T13:12:52Z

Bootstrap import analysis

Comparison of import times between this PR and base.

Summary

The average import time from this PR is: 279 ± 4 ms.

The average import time from base is: 281 ± 2 ms.

The import time difference between this PR and base is: -1.9 ± 0.1 ms.

Import time breakdown

The following import paths have shrunk:

ddtrace.auto 1.999 ms (0.72%)

ddtrace.bootstrap.sitecustomize 1.320 ms (0.47%)

ddtrace.bootstrap.preload 1.320 ms (0.47%)

ddtrace.internal.remoteconfig.client 0.659 ms (0.24%)

ddtrace 0.679 ms (0.24%)

ddtrace.internal._unpatched 0.031 ms (0.01%)

json 0.031 ms (0.01%)

json.decoder 0.031 ms (0.01%)

re 0.031 ms (0.01%)

enum 0.031 ms (0.01%)

types 0.031 ms (0.01%)

pr-commenter · 2025-07-17T13:40:18Z

Performance SLOs

Candidate: evan.li/distributed-mcp (411a83f)

🔵 No Baseline Data (24 suites)

🔵 coreapiscenario - 12/12 (2 unstable)

🔵 No baseline data available for this suite

⚠️ context_with_data_listeners

Time: ⚠️ 13.851µs (SLO: <20.000µs 📉 -30.7%)

Memory: ✅ 29.059MB (SLO: <31.000MB -6.3%)

✅ context_with_data_no_listeners

Time: ✅ 3.834µs (SLO: <10.000µs 📉 -61.7%)

Memory: ✅ 29.118MB (SLO: <31.000MB -6.1%)

⚠️ context_with_data_only_all_listeners

Time: ⚠️ 13.889µs (SLO: <20.000µs 📉 -30.6%)

Memory: ✅ 29.059MB (SLO: <31.000MB -6.3%)

✅ get_item_exists

Time: ✅ 0.633µs (SLO: <10.000µs 📉 -93.7%)

Memory: ✅ 29.059MB (SLO: <31.000MB -6.3%)

✅ get_item_missing

Time: ✅ 0.683µs (SLO: <10.000µs 📉 -93.2%)

Memory: ✅ 29.098MB (SLO: <31.000MB -6.1%)

✅ set_item

Time: ✅ 24.821µs (SLO: <30.000µs 📉 -17.3%)

Memory: ✅ 29.137MB (SLO: <31.000MB -6.0%)

🔵 djangosimple - 22/22

🔵 No baseline data available for this suite

✅ appsec

Time: ✅ 21.225ms (SLO: <22.300ms -4.8%)

Memory: ✅ 63.721MB (SLO: <65.500MB -2.7%)

✅ exception-replay-enabled

Time: ✅ 1.366ms (SLO: <1.450ms -5.8%)

Memory: ✅ 63.114MB (SLO: <65.500MB -3.6%)

✅ iast

Time: ✅ 21.267ms (SLO: <22.250ms -4.4%)

Memory: ✅ 63.701MB (SLO: <65.500MB -2.7%)

✅ profiler

Time: ✅ 15.946ms (SLO: <16.550ms -3.6%)

Memory: ✅ 51.171MB (SLO: <53.000MB -3.5%)

✅ span-code-origin

Time: ✅ 27.036ms (SLO: <28.200ms -4.1%)

Memory: ✅ 66.309MB (SLO: <68.000MB -2.5%)

✅ tracer

Time: ✅ 21.199ms (SLO: <22.700ms -6.6%)

Memory: ✅ 63.721MB (SLO: <65.500MB -2.7%)

✅ tracer-and-profiler

Time: ✅ 23.769ms (SLO: <24.900ms -4.5%)

Memory: ✅ 64.743MB (SLO: <67.000MB -3.4%)

✅ tracer-no-caches

Time: ✅ 18.936ms (SLO: <19.650ms -3.6%)

Memory: ✅ 63.681MB (SLO: <65.500MB -2.8%)

✅ tracer-no-databases

Time: ✅ 19.169ms (SLO: <20.100ms -4.6%)

Memory: ✅ 63.740MB (SLO: <65.500MB -2.7%)

✅ tracer-no-middleware

Time: ✅ 20.972ms (SLO: <22.500ms -6.8%)

Memory: ✅ 63.721MB (SLO: <65.500MB -2.7%)

✅ tracer-no-templates

Time: ✅ 21.061ms (SLO: <22.250ms -5.3%)

Memory: ✅ 63.721MB (SLO: <65.500MB -2.7%)

🔵 errortrackingdjangosimple - 6/6

🔵 No baseline data available for this suite

✅ errortracking-enabled-all

Time: ✅ 18.548ms (SLO: <19.850ms -6.6%)

Memory: ✅ 63.701MB (SLO: <65.500MB -2.7%)

✅ errortracking-enabled-user

Time: ✅ 18.501ms (SLO: <19.400ms -4.6%)

Memory: ✅ 63.760MB (SLO: <65.500MB -2.7%)

✅ tracer-enabled

Time: ✅ 18.650ms (SLO: <19.450ms -4.1%)

Memory: ✅ 63.760MB (SLO: <65.500MB -2.7%)

🔵 errortrackingflasksqli - 6/6

🔵 No baseline data available for this suite

✅ errortracking-enabled-all

Time: ✅ 2.111ms (SLO: <2.300ms -8.2%)

Memory: ✅ 51.629MB (SLO: <53.000MB -2.6%)

✅ errortracking-enabled-user

Time: ✅ 2.114ms (SLO: <2.250ms -6.1%)

Memory: ✅ 51.610MB (SLO: <53.000MB -2.6%)

✅ tracer-enabled

Time: ✅ 2.112ms (SLO: <2.300ms -8.2%)

Memory: ✅ 51.256MB (SLO: <53.000MB -3.3%)

🔵 flasksimple - 14/14

🔵 No baseline data available for this suite

✅ appsec-get

Time: ✅ 4.602ms (SLO: <4.750ms -3.1%)

Memory: ✅ 63.067MB (SLO: <64.000MB 🟡 -1.5%)

✅ appsec-post

Time: ✅ 6.633ms (SLO: <6.750ms 🟡 -1.7%)

Memory: ✅ 63.046MB (SLO: <64.000MB 🟡 -1.5%)

✅ appsec-telemetry

Time: ✅ 4.602ms (SLO: <4.750ms -3.1%)

Memory: ✅ 63.023MB (SLO: <64.000MB 🟡 -1.5%)

✅ debugger

Time: ✅ 1.853ms (SLO: <2.000ms -7.4%)

Memory: ✅ 42.008MB (SLO: <44.000MB -4.5%)

✅ iast-get

Time: ✅ 1.875ms (SLO: <2.000ms -6.3%)

Memory: ✅ 44.581MB (SLO: <45.000MB 🟡 -0.9%)

✅ profiler

Time: ✅ 1.984ms (SLO: <2.100ms -5.5%)

Memory: ✅ 43.640MB (SLO: <44.000MB 🟡 -0.8%)

✅ tracer

Time: ✅ 3.381ms (SLO: <3.650ms -7.4%)

Memory: ✅ 51.661MB (SLO: <53.000MB -2.5%)

🔵 flasksqli - 6/6

🔵 No baseline data available for this suite

✅ appsec-enabled

Time: ✅ 3.963ms (SLO: <4.200ms -5.7%)

Memory: ✅ 63.485MB (SLO: <66.000MB -3.8%)

✅ iast-enabled

Time: ✅ 2.560ms (SLO: <2.800ms -8.6%)

Memory: ✅ 56.564MB (SLO: <58.000MB -2.5%)

✅ tracer-enabled

Time: ✅ 2.096ms (SLO: <2.250ms -6.8%)

Memory: ✅ 51.315MB (SLO: <53.000MB -3.2%)

🔵 httppropagationextract - 60/60

🔵 No baseline data available for this suite

✅ all_styles_all_headers

Time: ✅ 82.994µs (SLO: <100.000µs 📉 -17.0%)

Memory: ✅ 29.118MB (SLO: <31.000MB -6.1%)

✅ b3_headers

Time: ✅ 14.298µs (SLO: <20.000µs 📉 -28.5%)

Memory: ✅ 29.196MB (SLO: <31.000MB -5.8%)

✅ b3_single_headers

Time: ✅ 13.356µs (SLO: <20.000µs 📉 -33.2%)

Memory: ✅ 29.078MB (SLO: <31.000MB -6.2%)

✅ datadog_tracecontext_tracestate_not_propagated_on_trace_id_no_match

Time: ✅ 66.290µs (SLO: <80.000µs 📉 -17.1%)

Memory: ✅ 29.078MB (SLO: <31.000MB -6.2%)

✅ datadog_tracecontext_tracestate_propagated_on_trace_id_match

Time: ✅ 67.618µs (SLO: <80.000µs 📉 -15.5%)

Memory: ✅ 29.118MB (SLO: <31.000MB -6.1%)

✅ empty_headers

Time: ✅ 1.595µs (SLO: <10.000µs 📉 -84.1%)

Memory: ✅ 29.118MB (SLO: <31.000MB -6.1%)

✅ full_t_id_datadog_headers

Time: ✅ 24.239µs (SLO: <30.000µs 📉 -19.2%)

Memory: ✅ 29.157MB (SLO: <31.000MB -5.9%)

✅ invalid_priority_header

Time: ✅ 6.608µs (SLO: <10.000µs 📉 -33.9%)

Memory: ✅ 29.019MB (SLO: <31.000MB -6.4%)

✅ invalid_span_id_header

Time: ✅ 6.632µs (SLO: <10.000µs 📉 -33.7%)

Memory: ✅ 29.137MB (SLO: <31.000MB -6.0%)

✅ invalid_tags_header

Time: ✅ 6.616µs (SLO: <10.000µs 📉 -33.8%)

Memory: ✅ 29.078MB (SLO: <31.000MB -6.2%)

✅ invalid_trace_id_header

Time: ✅ 6.637µs (SLO: <10.000µs 📉 -33.6%)

Memory: ✅ 29.137MB (SLO: <31.000MB -6.0%)

✅ large_header_no_matches

Time: ✅ 27.601µs (SLO: <30.000µs -8.0%)

Memory: ✅ 29.098MB (SLO: <31.000MB -6.1%)

✅ large_valid_headers_all

Time: ✅ 28.707µs (SLO: <40.000µs 📉 -28.2%)

Memory: ✅ 29.118MB (SLO: <31.000MB -6.1%)

✅ medium_header_no_matches

Time: ✅ 9.846µs (SLO: <20.000µs 📉 -50.8%)

Memory: ✅ 29.118MB (SLO: <31.000MB -6.1%)

✅ medium_valid_headers_all

Time: ✅ 11.254µs (SLO: <20.000µs 📉 -43.7%)

Memory: ✅ 29.177MB (SLO: <31.000MB -5.9%)

✅ none_propagation_style

Time: ✅ 1.697µs (SLO: <10.000µs 📉 -83.0%)

Memory: ✅ 29.078MB (SLO: <31.000MB -6.2%)

✅ tracecontext_headers

Time: ✅ 34.849µs (SLO: <40.000µs 📉 -12.9%)

Memory: ✅ 29.137MB (SLO: <31.000MB -6.0%)

✅ valid_headers_all

Time: ✅ 6.555µs (SLO: <10.000µs 📉 -34.4%)

Memory: ✅ 29.118MB (SLO: <31.000MB -6.1%)

✅ valid_headers_basic

Time: ✅ 6.095µs (SLO: <10.000µs 📉 -39.0%)

Memory: ✅ 29.157MB (SLO: <31.000MB -5.9%)

✅ wsgi_empty_headers

Time: ✅ 1.592µs (SLO: <10.000µs 📉 -84.1%)

Memory: ✅ 29.118MB (SLO: <31.000MB -6.1%)

✅ wsgi_invalid_priority_header

Time: ✅ 6.608µs (SLO: <10.000µs 📉 -33.9%)

Memory: ✅ 29.118MB (SLO: <31.000MB -6.1%)

✅ wsgi_invalid_span_id_header

Time: ✅ 1.600µs (SLO: <10.000µs 📉 -84.0%)

Memory: ✅ 29.157MB (SLO: <31.000MB -5.9%)

✅ wsgi_invalid_tags_header

Time: ✅ 6.635µs (SLO: <10.000µs 📉 -33.7%)

Memory: ✅ 29.098MB (SLO: <31.000MB -6.1%)

✅ wsgi_invalid_trace_id_header

Time: ✅ 6.567µs (SLO: <10.000µs 📉 -34.3%)

Memory: ✅ 29.275MB (SLO: <31.000MB -5.6%)

✅ wsgi_large_header_no_matches

Time: ✅ 28.764µs (SLO: <40.000µs 📉 -28.1%)

Memory: ✅ 29.059MB (SLO: <31.000MB -6.3%)

✅ wsgi_large_valid_headers_all

Time: ✅ 29.918µs (SLO: <40.000µs 📉 -25.2%)

Memory: ✅ 29.118MB (SLO: <31.000MB -6.1%)

✅ wsgi_medium_header_no_matches

Time: ✅ 10.145µs (SLO: <20.000µs 📉 -49.3%)

Memory: ✅ 29.078MB (SLO: <31.000MB -6.2%)

✅ wsgi_medium_valid_headers_all

Time: ✅ 11.526µs (SLO: <20.000µs 📉 -42.4%)

Memory: ✅ 29.177MB (SLO: <31.000MB -5.9%)

✅ wsgi_valid_headers_all

Time: ✅ 6.584µs (SLO: <10.000µs 📉 -34.2%)

Memory: ✅ 29.098MB (SLO: <31.000MB -6.1%)

✅ wsgi_valid_headers_basic

Time: ✅ 6.156µs (SLO: <10.000µs 📉 -38.4%)

Memory: ✅ 29.078MB (SLO: <31.000MB -6.2%)

🔵 httppropagationinject - 16/16

🔵 No baseline data available for this suite

✅ ids_only

Time: ✅ 20.167µs (SLO: <30.000µs 📉 -32.8%)

Memory: ✅ 29.118MB (SLO: <31.000MB -6.1%)

✅ with_all

Time: ✅ 35.080µs (SLO: <40.000µs 📉 -12.3%)

Memory: ✅ 29.098MB (SLO: <31.000MB -6.1%)

✅ with_dd_origin

Time: ✅ 26.607µs (SLO: <30.000µs 📉 -11.3%)

Memory: ✅ 29.078MB (SLO: <31.000MB -6.2%)

✅ with_priority_and_origin

Time: ✅ 28.613µs (SLO: <40.000µs 📉 -28.5%)

Memory: ✅ 29.098MB (SLO: <31.000MB -6.1%)

✅ with_sampling_priority

Time: ✅ 22.352µs (SLO: <30.000µs 📉 -25.5%)

Memory: ✅ 29.118MB (SLO: <31.000MB -6.1%)

✅ with_tags

Time: ✅ 28.465µs (SLO: <40.000µs 📉 -28.8%)

Memory: ✅ 29.078MB (SLO: <31.000MB -6.2%)

✅ with_tags_invalid

Time: ✅ 31.128µs (SLO: <40.000µs 📉 -22.2%)

Memory: ✅ 29.157MB (SLO: <31.000MB -5.9%)

✅ with_tags_max_size

Time: ✅ 28.472µs (SLO: <40.000µs 📉 -28.8%)

Memory: ✅ 29.098MB (SLO: <31.000MB -6.1%)

🔵 iast_aspects - 40/40

🔵 No baseline data available for this suite

✅ re_expand_aspect

Time: ✅ 32.978µs (SLO: <40.000µs 📉 -17.6%)

Memory: ✅ 34.642MB (SLO: <35.000MB 🟡 -1.0%)

✅ re_expand_noaspect

Time: ✅ 29.998µs (SLO: <40.000µs 📉 -25.0%)

Memory: ✅ 34.603MB (SLO: <35.000MB 🟡 -1.1%)

✅ re_findall_aspect

Time: ✅ 3.704µs (SLO: <10.000µs 📉 -63.0%)

Memory: ✅ 34.642MB (SLO: <35.000MB 🟡 -1.0%)

✅ re_findall_noaspect

Time: ✅ 1.415µs (SLO: <10.000µs 📉 -85.8%)

Memory: ✅ 34.623MB (SLO: <35.000MB 🟡 -1.1%)

✅ re_finditer_aspect

Time: ✅ 5.162µs (SLO: <10.000µs 📉 -48.4%)

Memory: ✅ 34.603MB (SLO: <35.000MB 🟡 -1.1%)

✅ re_finditer_noaspect

Time: ✅ 1.410µs (SLO: <10.000µs 📉 -85.9%)

Memory: ✅ 34.603MB (SLO: <35.000MB 🟡 -1.1%)

✅ re_fullmatch_aspect

Time: ✅ 3.377µs (SLO: <10.000µs 📉 -66.2%)

Memory: ✅ 34.603MB (SLO: <35.000MB 🟡 -1.1%)

✅ re_fullmatch_noaspect

Time: ✅ 1.314µs (SLO: <10.000µs 📉 -86.9%)

Memory: ✅ 34.642MB (SLO: <35.000MB 🟡 -1.0%)

✅ re_group_aspect

Time: ✅ 3.437µs (SLO: <10.000µs 📉 -65.6%)

Memory: ✅ 34.642MB (SLO: <35.000MB 🟡 -1.0%)

✅ re_group_noaspect

Time: ✅ 1.601µs (SLO: <10.000µs 📉 -84.0%)

Memory: ✅ 34.642MB (SLO: <35.000MB 🟡 -1.0%)

✅ re_groups_aspect

Time: ✅ 3.588µs (SLO: <10.000µs 📉 -64.1%)

Memory: ✅ 34.603MB (SLO: <35.000MB 🟡 -1.1%)

✅ re_groups_noaspect

Time: ✅ 1.711µs (SLO: <10.000µs 📉 -82.9%)

Memory: ✅ 34.682MB (SLO: <35.000MB 🟡 -0.9%)

✅ re_match_aspect

Time: ✅ 3.417µs (SLO: <10.000µs 📉 -65.8%)

Memory: ✅ 34.642MB (SLO: <35.000MB 🟡 -1.0%)

✅ re_match_noaspect

Time: ✅ 1.301µs (SLO: <10.000µs 📉 -87.0%)

Memory: ✅ 34.642MB (SLO: <35.000MB 🟡 -1.0%)

✅ re_search_aspect

Time: ✅ 3.309µs (SLO: <10.000µs 📉 -66.9%)

Memory: ✅ 34.603MB (SLO: <35.000MB 🟡 -1.1%)

✅ re_search_noaspect

Time: ✅ 1.202µs (SLO: <10.000µs 📉 -88.0%)

Memory: ✅ 34.603MB (SLO: <35.000MB 🟡 -1.1%)

✅ re_sub_aspect

Time: ✅ 4.676µs (SLO: <10.000µs 📉 -53.2%)

Memory: ✅ 34.662MB (SLO: <35.000MB 🟡 -1.0%)

✅ re_sub_noaspect

Time: ✅ 1.523µs (SLO: <10.000µs 📉 -84.8%)

Memory: ✅ 34.642MB (SLO: <35.000MB 🟡 -1.0%)

✅ re_subn_aspect

Time: ✅ 4.853µs (SLO: <10.000µs 📉 -51.5%)

Memory: ✅ 34.603MB (SLO: <35.500MB -2.5%)

✅ re_subn_noaspect

Time: ✅ 1.614µs (SLO: <10.000µs 📉 -83.9%)

Memory: ✅ 34.603MB (SLO: <35.000MB 🟡 -1.1%)

🔵 iastaspects - 118/118

🔵 No baseline data available for this suite

✅ add_aspect

Time: ✅ 0.326µs (SLO: <10.000µs 📉 -96.7%)

Memory: ✅ 34.623MB (SLO: <35.000MB 🟡 -1.1%)

✅ add_inplace_aspect

Time: ✅ 0.332µs (SLO: <10.000µs 📉 -96.7%)

Memory: ✅ 34.662MB (SLO: <35.000MB 🟡 -1.0%)

✅ add_inplace_noaspect

Time: ✅ 0.322µs (SLO: <10.000µs 📉 -96.8%)

Memory: ✅ 34.603MB (SLO: <35.000MB 🟡 -1.1%)

✅ add_noaspect

Time: ✅ 0.280µs (SLO: <10.000µs 📉 -97.2%)

Memory: ✅ 34.603MB (SLO: <35.000MB 🟡 -1.1%)

✅ bytearray_aspect

Time: ✅ 1.854µs (SLO: <10.000µs 📉 -81.5%)

Memory: ✅ 34.623MB (SLO: <35.000MB 🟡 -1.1%)

✅ bytearray_extend_aspect

Time: ✅ 1.404µs (SLO: <10.000µs 📉 -86.0%)

Memory: ✅ 34.603MB (SLO: <35.000MB 🟡 -1.1%)

✅ bytearray_extend_noaspect

Time: ✅ 0.610µs (SLO: <10.000µs 📉 -93.9%)

Memory: ✅ 34.662MB (SLO: <35.000MB 🟡 -1.0%)

✅ bytearray_noaspect

Time: ✅ 0.483µs (SLO: <10.000µs 📉 -95.2%)

Memory: ✅ 34.603MB (SLO: <35.000MB 🟡 -1.1%)

✅ bytes_aspect

Time: ✅ 1.866µs (SLO: <10.000µs 📉 -81.3%)

Memory: ✅ 34.642MB (SLO: <35.000MB 🟡 -1.0%)

✅ bytes_noaspect

Time: ✅ 0.495µs (SLO: <10.000µs 📉 -95.1%)

Memory: ✅ 34.603MB (SLO: <35.000MB 🟡 -1.1%)

✅ bytesio_aspect

Time: ✅ 1.877µs (SLO: <10.000µs 📉 -81.2%)

Memory: ✅ 34.642MB (SLO: <35.000MB 🟡 -1.0%)

✅ bytesio_noaspect

Time: ✅ 0.491µs (SLO: <10.000µs 📉 -95.1%)

Memory: ✅ 34.623MB (SLO: <35.000MB 🟡 -1.1%)

✅ capitalize_aspect

Time: ✅ 0.737µs (SLO: <10.000µs 📉 -92.6%)

Memory: ✅ 34.623MB (SLO: <35.000MB 🟡 -1.1%)

✅ capitalize_noaspect

Time: ✅ 0.434µs (SLO: <10.000µs 📉 -95.7%)

Memory: ✅ 34.603MB (SLO: <35.000MB 🟡 -1.1%)

✅ casefold_aspect

Time: ✅ 0.732µs (SLO: <10.000µs 📉 -92.7%)

Memory: ✅ 34.682MB (SLO: <35.000MB 🟡 -0.9%)

✅ casefold_noaspect

Time: ✅ 0.369µs (SLO: <10.000µs 📉 -96.3%)

Memory: ✅ 34.623MB (SLO: <35.000MB 🟡 -1.1%)

✅ decode_aspect

Time: ✅ 0.721µs (SLO: <10.000µs 📉 -92.8%)

Memory: ✅ 34.642MB (SLO: <35.000MB 🟡 -1.0%)

✅ decode_noaspect

Time: ✅ 0.420µs (SLO: <10.000µs 📉 -95.8%)

Memory: ✅ 34.623MB (SLO: <35.000MB 🟡 -1.1%)

✅ encode_aspect

Time: ✅ 0.707µs (SLO: <10.000µs 📉 -92.9%)

Memory: ✅ 34.642MB (SLO: <35.000MB 🟡 -1.0%)

✅ encode_noaspect

Time: ✅ 0.398µs (SLO: <10.000µs 📉 -96.0%)

Memory: ✅ 34.623MB (SLO: <35.000MB 🟡 -1.1%)

✅ format_aspect

Time: ✅ 3.362µs (SLO: <10.000µs 📉 -66.4%)

Memory: ✅ 34.642MB (SLO: <35.000MB 🟡 -1.0%)

✅ format_map_aspect

Time: ✅ 3.215µs (SLO: <10.000µs 📉 -67.9%)

Memory: ✅ 34.623MB (SLO: <35.000MB 🟡 -1.1%)

✅ format_map_noaspect

Time: ✅ 0.768µs (SLO: <10.000µs 📉 -92.3%)

Memory: ✅ 34.642MB (SLO: <35.000MB 🟡 -1.0%)

✅ format_noaspect

Time: ✅ 0.600µs (SLO: <10.000µs 📉 -94.0%)

Memory: ✅ 34.623MB (SLO: <35.000MB 🟡 -1.1%)

✅ index_aspect

Time: ✅ 0.341µs (SLO: <10.000µs 📉 -96.6%)

Memory: ✅ 34.623MB (SLO: <35.000MB 🟡 -1.1%)

✅ index_noaspect

Time: ✅ 0.279µs (SLO: <10.000µs 📉 -97.2%)

Memory: ✅ 34.603MB (SLO: <35.000MB 🟡 -1.1%)

✅ join_aspect

Time: ✅ 1.225µs (SLO: <10.000µs 📉 -87.8%)

Memory: ✅ 34.642MB (SLO: <35.000MB 🟡 -1.0%)

✅ join_noaspect

Time: ✅ 0.494µs (SLO: <10.000µs 📉 -95.1%)

Memory: ✅ 34.642MB (SLO: <35.000MB 🟡 -1.0%)

✅ ljust_aspect

Time: ✅ 10.313µs (SLO: <20.000µs 📉 -48.4%)

Memory: ✅ 34.721MB (SLO: <35.500MB -2.2%)

✅ ljust_noaspect

Time: ✅ 0.407µs (SLO: <10.000µs 📉 -95.9%)

Memory: ✅ 34.623MB (SLO: <35.500MB -2.5%)

✅ lower_aspect

Time: ✅ 2.259µs (SLO: <10.000µs 📉 -77.4%)

Memory: ✅ 34.682MB (SLO: <35.500MB -2.3%)

✅ lower_noaspect

Time: ✅ 0.369µs (SLO: <10.000µs 📉 -96.3%)

Memory: ✅ 34.603MB (SLO: <35.000MB 🟡 -1.1%)

✅ lstrip_aspect

Time: ✅ 10.951µs (SLO: <20.000µs 📉 -45.2%)

Memory: ✅ 34.780MB (SLO: <35.500MB -2.0%)

✅ lstrip_noaspect

Time: ✅ 0.382µs (SLO: <10.000µs 📉 -96.2%)

Memory: ✅ 34.623MB (SLO: <35.000MB 🟡 -1.1%)

✅ modulo_aspect

Time: ✅ 0.595µs (SLO: <10.000µs 📉 -94.1%)

Memory: ✅ 34.623MB (SLO: <35.000MB 🟡 -1.1%)

✅ modulo_aspect_for_bytearray_bytearray

Time: ✅ 1.273µs (SLO: <10.000µs 📉 -87.3%)

Memory: ✅ 34.642MB (SLO: <35.000MB 🟡 -1.0%)

✅ modulo_aspect_for_bytes

Time: ✅ 0.750µs (SLO: <10.000µs 📉 -92.5%)

Memory: ✅ 34.642MB (SLO: <35.000MB 🟡 -1.0%)

✅ modulo_aspect_for_bytes_bytearray

Time: ✅ 0.981µs (SLO: <10.000µs 📉 -90.2%)

Memory: ✅ 34.603MB (SLO: <35.000MB 🟡 -1.1%)

✅ modulo_noaspect

Time: ✅ 0.626µs (SLO: <10.000µs 📉 -93.7%)

Memory: ✅ 34.662MB (SLO: <35.000MB 🟡 -1.0%)

✅ replace_aspect

Time: ✅ 5.170µs (SLO: <10.000µs 📉 -48.3%)

Memory: ✅ 34.623MB (SLO: <35.000MB 🟡 -1.1%)

✅ replace_noaspect

Time: ✅ 0.460µs (SLO: <10.000µs 📉 -95.4%)

Memory: ✅ 34.603MB (SLO: <35.500MB -2.5%)

✅ repr_aspect

Time: ✅ 0.904µs (SLO: <10.000µs 📉 -91.0%)

Memory: ✅ 34.623MB (SLO: <35.000MB 🟡 -1.1%)

✅ repr_noaspect

Time: ✅ 0.421µs (SLO: <10.000µs 📉 -95.8%)

Memory: ✅ 34.623MB (SLO: <35.000MB 🟡 -1.1%)

✅ rstrip_aspect

Time: ✅ 10.909µs (SLO: <20.000µs 📉 -45.5%)

Memory: ✅ 34.721MB (SLO: <35.500MB -2.2%)

✅ rstrip_noaspect

Time: ✅ 0.380µs (SLO: <10.000µs 📉 -96.2%)

Memory: ✅ 34.642MB (SLO: <35.000MB 🟡 -1.0%)

✅ slice_aspect

Time: ✅ 0.477µs (SLO: <10.000µs 📉 -95.2%)

Memory: ✅ 34.623MB (SLO: <35.000MB 🟡 -1.1%)

✅ slice_noaspect

Time: ✅ 0.445µs (SLO: <10.000µs 📉 -95.5%)

Memory: ✅ 34.642MB (SLO: <35.000MB 🟡 -1.0%)

✅ stringio_aspect

Time: ✅ 2.166µs (SLO: <10.000µs 📉 -78.3%)

Memory: ✅ 34.623MB (SLO: <35.000MB 🟡 -1.1%)

✅ stringio_noaspect

Time: ✅ 0.714µs (SLO: <10.000µs 📉 -92.9%)

Memory: ✅ 34.642MB (SLO: <35.000MB 🟡 -1.0%)

✅ strip_aspect

Time: ✅ 10.354µs (SLO: <20.000µs 📉 -48.2%)

Memory: ✅ 34.819MB (SLO: <35.500MB 🟡 -1.9%)

✅ strip_noaspect

Time: ✅ 0.387µs (SLO: <10.000µs 📉 -96.1%)

Memory: ✅ 34.623MB (SLO: <35.000MB 🟡 -1.1%)

✅ swapcase_aspect

Time: ✅ 2.474µs (SLO: <10.000µs 📉 -75.3%)

Memory: ✅ 34.623MB (SLO: <35.000MB 🟡 -1.1%)

✅ swapcase_noaspect

Time: ✅ 0.536µs (SLO: <10.000µs 📉 -94.6%)

Memory: ✅ 34.662MB (SLO: <35.000MB 🟡 -1.0%)

✅ title_aspect

Time: ✅ 2.404µs (SLO: <10.000µs 📉 -76.0%)

Memory: ✅ 34.603MB (SLO: <35.000MB 🟡 -1.1%)

✅ title_noaspect

Time: ✅ 0.502µs (SLO: <10.000µs 📉 -95.0%)

Memory: ✅ 34.623MB (SLO: <35.000MB 🟡 -1.1%)

✅ translate_aspect

Time: ✅ 3.298µs (SLO: <10.000µs 📉 -67.0%)

Memory: ✅ 34.623MB (SLO: <35.000MB 🟡 -1.1%)

✅ translate_noaspect

Time: ✅ 1.040µs (SLO: <10.000µs 📉 -89.6%)

Memory: ✅ 34.642MB (SLO: <35.000MB 🟡 -1.0%)

✅ upper_aspect

Time: ✅ 2.457µs (SLO: <10.000µs 📉 -75.4%)

Memory: ✅ 34.642MB (SLO: <35.000MB 🟡 -1.0%)

✅ upper_noaspect

Time: ✅ 0.368µs (SLO: <10.000µs 📉 -96.3%)

Memory: ✅ 34.642MB (SLO: <35.000MB 🟡 -1.0%)

🔵 iastaspectsospath - 24/24

🔵 No baseline data available for this suite

✅ ospathbasename_aspect

Time: ✅ 4.134µs (SLO: <10.000µs 📉 -58.7%)

Memory: ✅ 34.623MB (SLO: <35.000MB 🟡 -1.1%)

✅ ospathbasename_noaspect

Time: ✅ 1.087µs (SLO: <10.000µs 📉 -89.1%)

Memory: ✅ 34.603MB (SLO: <35.000MB 🟡 -1.1%)

✅ ospathjoin_aspect

Time: ✅ 6.792µs (SLO: <10.000µs 📉 -32.1%)

Memory: ✅ 34.603MB (SLO: <35.000MB 🟡 -1.1%)

✅ ospathjoin_noaspect

Time: ✅ 2.282µs (SLO: <10.000µs 📉 -77.2%)

Memory: ✅ 34.662MB (SLO: <35.000MB 🟡 -1.0%)

✅ ospathnormcase_aspect

Time: ✅ 3.436µs (SLO: <10.000µs 📉 -65.6%)

Memory: ✅ 34.603MB (SLO: <35.000MB 🟡 -1.1%)

✅ ospathnormcase_noaspect

Time: ✅ 0.576µs (SLO: <10.000µs 📉 -94.2%)

Memory: ✅ 34.603MB (SLO: <35.000MB 🟡 -1.1%)

✅ ospathsplit_aspect

Time: ✅ 4.764µs (SLO: <10.000µs 📉 -52.4%)

Memory: ✅ 34.642MB (SLO: <35.000MB 🟡 -1.0%)

✅ ospathsplit_noaspect

Time: ✅ 1.592µs (SLO: <10.000µs 📉 -84.1%)

Memory: ✅ 34.603MB (SLO: <35.000MB 🟡 -1.1%)

✅ ospathsplitdrive_aspect

Time: ✅ 3.707µs (SLO: <10.000µs 📉 -62.9%)

Memory: ✅ 34.603MB (SLO: <35.000MB 🟡 -1.1%)

✅ ospathsplitdrive_noaspect

Time: ✅ 0.706µs (SLO: <10.000µs 📉 -92.9%)

Memory: ✅ 34.603MB (SLO: <35.000MB 🟡 -1.1%)

✅ ospathsplitext_aspect

Time: ✅ 5.381µs (SLO: <10.000µs 📉 -46.2%)

Memory: ✅ 34.662MB (SLO: <35.000MB 🟡 -1.0%)

✅ ospathsplitext_noaspect

Time: ✅ 1.379µs (SLO: <10.000µs 📉 -86.2%)

Memory: ✅ 34.603MB (SLO: <35.000MB 🟡 -1.1%)

🔵 iastaspectssplit - 12/12

🔵 No baseline data available for this suite

✅ rsplit_aspect

Time: ✅ 1.505µs (SLO: <10.000µs 📉 -84.9%)

Memory: ✅ 34.642MB (SLO: <35.000MB 🟡 -1.0%)

✅ rsplit_noaspect

Time: ✅ 0.575µs (SLO: <10.000µs 📉 -94.3%)

Memory: ✅ 34.642MB (SLO: <35.000MB 🟡 -1.0%)

✅ split_aspect

Time: ✅ 1.490µs (SLO: <10.000µs 📉 -85.1%)

Memory: ✅ 34.603MB (SLO: <35.000MB 🟡 -1.1%)

✅ split_noaspect

Time: ✅ 0.580µs (SLO: <10.000µs 📉 -94.2%)

Memory: ✅ 34.642MB (SLO: <35.000MB 🟡 -1.0%)

✅ splitlines_aspect

Time: ✅ 1.481µs (SLO: <10.000µs 📉 -85.2%)

Memory: ✅ 34.603MB (SLO: <35.000MB 🟡 -1.1%)

✅ splitlines_noaspect

Time: ✅ 0.584µs (SLO: <10.000µs 📉 -94.2%)

Memory: ✅ 34.642MB (SLO: <35.000MB 🟡 -1.0%)

🔵 iastpropagation - 8/8

🔵 No baseline data available for this suite

✅ no-propagation

Time: ✅ 48.791µs (SLO: <60.000µs 📉 -18.7%)

Memory: ✅ 34.642MB (SLO: <35.500MB -2.4%)

✅ propagation_enabled

Time: ✅ 144.823µs (SLO: <160.000µs -9.5%)

Memory: ✅ 34.642MB (SLO: <35.500MB -2.4%)

✅ propagation_enabled_100

Time: ✅ 1.561ms (SLO: <1.800ms 📉 -13.3%)

Memory: ✅ 34.623MB (SLO: <35.000MB 🟡 -1.1%)

✅ propagation_enabled_1000

Time: ✅ 28.907ms (SLO: <30.550ms -5.4%)

Memory: ✅ 34.662MB (SLO: <35.500MB -2.4%)

🔵 otelsdkspan - 24/24

🔵 No baseline data available for this suite

✅ add-event

Time: ✅ 40.321ms (SLO: <42.000ms -4.0%)

Memory: ✅ 31.870MB (SLO: <35.000MB -8.9%)

✅ add-link

Time: ✅ 36.074ms (SLO: <38.550ms -6.4%)

Memory: ✅ 31.870MB (SLO: <35.000MB -8.9%)

✅ add-metrics

Time: ✅ 219.965ms (SLO: <232.000ms -5.2%)

Memory: ✅ 31.870MB (SLO: <35.000MB -8.9%)

✅ add-tags

Time: ✅ 212.689ms (SLO: <221.600ms -4.0%)

Memory: ✅ 31.890MB (SLO: <35.000MB -8.9%)

✅ get-context

Time: ✅ 29.168ms (SLO: <31.300ms -6.8%)

Memory: ✅ 31.850MB (SLO: <35.000MB -9.0%)

✅ is-recording

Time: ✅ 29.033ms (SLO: <31.000ms -6.3%)

Memory: ✅ 31.909MB (SLO: <35.000MB -8.8%)

✅ record-exception

Time: ✅ 63.002ms (SLO: <65.850ms -4.3%)

Memory: ✅ 31.850MB (SLO: <35.000MB -9.0%)

✅ set-status

Time: ✅ 32.318ms (SLO: <34.150ms -5.4%)

Memory: ✅ 31.890MB (SLO: <35.000MB -8.9%)

✅ start

Time: ✅ 29.174ms (SLO: <30.150ms -3.2%)

Memory: ✅ 31.850MB (SLO: <35.000MB -9.0%)

✅ start-finish

Time: ✅ 33.928ms (SLO: <35.350ms -4.0%)

Memory: ✅ 31.890MB (SLO: <35.000MB -8.9%)

✅ start-finish-telemetry

Time: ✅ 34.045ms (SLO: <35.450ms -4.0%)

Memory: ✅ 31.870MB (SLO: <35.000MB -8.9%)

✅ update-name

Time: ✅ 31.765ms (SLO: <33.400ms -4.9%)

Memory: ✅ 31.890MB (SLO: <35.000MB -8.9%)

🔵 otelspan - 22/22

🔵 No baseline data available for this suite

✅ add-event

Time: ✅ 44.396ms (SLO: <47.150ms -5.8%)

Memory: ✅ 42.117MB (SLO: <42.500MB 🟡 -0.9%)

✅ add-metrics

Time: ✅ 317.090ms (SLO: <344.800ms -8.0%)

Memory: ✅ 558.957MB (SLO: <562.000MB 🟡 -0.5%)

✅ add-tags

Time: ✅ 286.596ms (SLO: <314.000ms -8.7%)

Memory: ✅ 561.304MB (SLO: <563.500MB 🟡 -0.4%)

✅ get-context

Time: ✅ 84.833ms (SLO: <92.350ms -8.1%)

Memory: ✅ 37.383MB (SLO: <38.000MB 🟡 -1.6%)

✅ is-recording

Time: ✅ 42.245ms (SLO: <44.500ms -5.1%)

Memory: ✅ 41.559MB (SLO: <42.000MB 🟡 -1.0%)

✅ record-exception

Time: ✅ 60.397ms (SLO: <67.650ms 📉 -10.7%)

Memory: ✅ 37.619MB (SLO: <38.000MB 🟡 -1.0%)

✅ set-status

Time: ✅ 47.516ms (SLO: <50.400ms -5.7%)

Memory: ✅ 41.510MB (SLO: <42.000MB 🟡 -1.2%)

✅ start

Time: ✅ 40.799ms (SLO: <43.450ms -6.1%)

Memory: ✅ 41.550MB (SLO: <42.000MB 🟡 -1.1%)

✅ start-finish

Time: ✅ 80.793ms (SLO: <86.000ms -6.1%)

Memory: ✅ 31.654MB (SLO: <32.000MB 🟡 -1.1%)

✅ start-finish-telemetry

Time: ✅ 82.708ms (SLO: <86.000ms -3.8%)

Memory: ✅ 31.615MB (SLO: <32.000MB 🟡 -1.2%)

✅ update-name

Time: ✅ 42.802ms (SLO: <45.150ms -5.2%)

Memory: ✅ 41.849MB (SLO: <42.500MB 🟡 -1.5%)

🔵 packagespackageforrootmodulemapping - 4/4

🔵 No baseline data available for this suite

✅ cache_off

Time: ✅ 340.782ms (SLO: <354.300ms -3.8%)

Memory: ✅ 34.676MB (SLO: <38.000MB -8.7%)

✅ cache_on

Time: ✅ 0.393µs (SLO: <10.000µs 📉 -96.1%)

Memory: ✅ 34.313MB (SLO: <38.000MB -9.7%)

🔵 packagesupdateimporteddependencies - 24/24

🔵 No baseline data available for this suite

✅ import_many

Time: ✅ 154.302µs (SLO: <170.000µs -9.2%)

Memory: ✅ 34.300MB (SLO: <35.500MB -3.4%)

✅ import_many_cached

Time: ✅ 120.895µs (SLO: <130.000µs -7.0%)

Memory: ✅ 34.298MB (SLO: <35.500MB -3.4%)

✅ import_many_stdlib

Time: ✅ 1.612ms (SLO: <1.750ms -7.9%)

Memory: ✅ 34.448MB (SLO: <35.500MB -3.0%)

✅ import_many_stdlib_cached

Time: ✅ 0.974ms (SLO: <1.100ms 📉 -11.4%)

Memory: ✅ 34.363MB (SLO: <35.500MB -3.2%)

✅ import_many_unknown

Time: ✅ 830.398µs (SLO: <890.000µs -6.7%)

Memory: ✅ 34.195MB (SLO: <35.500MB -3.7%)

✅ import_many_unknown_cached

Time: ✅ 790.501µs (SLO: <870.000µs -9.1%)

Memory: ✅ 34.423MB (SLO: <35.500MB -3.0%)

✅ import_one

Time: ✅ 19.736µs (SLO: <30.000µs 📉 -34.2%)

Memory: ✅ 34.294MB (SLO: <35.500MB -3.4%)

✅ import_one_cache

Time: ✅ 6.287µs (SLO: <10.000µs 📉 -37.1%)

Memory: ✅ 34.327MB (SLO: <35.500MB -3.3%)

✅ import_one_stdlib

Time: ✅ 18.723µs (SLO: <20.000µs -6.4%)

Memory: ✅ 34.298MB (SLO: <35.500MB -3.4%)

✅ import_one_stdlib_cache

Time: ✅ 6.276µs (SLO: <10.000µs 📉 -37.2%)

Memory: ✅ 34.280MB (SLO: <35.500MB -3.4%)

✅ import_one_unknown

Time: ✅ 45.419µs (SLO: <50.000µs -9.2%)

Memory: ✅ 34.163MB (SLO: <35.500MB -3.8%)

✅ import_one_unknown_cache

Time: ✅ 6.311µs (SLO: <10.000µs 📉 -36.9%)

Memory: ✅ 34.263MB (SLO: <35.500MB -3.5%)

🔵 ratelimiter - 12/12

🔵 No baseline data available for this suite

✅ defaults

Time: ✅ 2.352µs (SLO: <10.000µs 📉 -76.5%)

Memory: ✅ 28.685MB (SLO: <31.000MB -7.5%)

✅ high_rate_limit

Time: ✅ 2.413µs (SLO: <10.000µs 📉 -75.9%)

Memory: ✅ 28.685MB (SLO: <31.000MB -7.5%)

✅ long_window

Time: ✅ 2.366µs (SLO: <10.000µs 📉 -76.3%)

Memory: ✅ 28.665MB (SLO: <31.000MB -7.5%)

✅ low_rate_limit

Time: ✅ 2.360µs (SLO: <10.000µs 📉 -76.4%)

Memory: ✅ 28.685MB (SLO: <31.000MB -7.5%)

✅ no_rate_limit

Time: ✅ 0.829µs (SLO: <10.000µs 📉 -91.7%)

Memory: ✅ 28.665MB (SLO: <31.000MB -7.5%)

✅ short_window

Time: ✅ 2.472µs (SLO: <10.000µs 📉 -75.3%)

Memory: ✅ 28.744MB (SLO: <31.000MB -7.3%)

🔵 recursivecomputation - 8/8

🔵 No baseline data available for this suite

✅ deep

Time: ✅ 309.184ms (SLO: <320.950ms -3.7%)

Memory: ✅ 30.278MB (SLO: <31.000MB -2.3%)

✅ deep-profiled

Time: ✅ 343.900ms (SLO: <359.150ms -4.2%)

Memory: ✅ 34.603MB (SLO: <35.500MB -2.5%)

✅ medium

Time: ✅ 7.023ms (SLO: <7.400ms -5.1%)

Memory: ✅ 29.098MB (SLO: <31.000MB -6.1%)

✅ shallow

Time: ✅ 0.941ms (SLO: <1.050ms 📉 -10.4%)

Memory: ✅ 29.098MB (SLO: <31.000MB -6.1%)

🔵 samplingrules - 8/8

🔵 No baseline data available for this suite

✅ average_match

Time: ✅ 274.559µs (SLO: <350.000µs 📉 -21.6%)

Memory: ✅ 29.098MB (SLO: <31.000MB -6.1%)

✅ high_match

Time: ✅ 446.176µs (SLO: <550.000µs 📉 -18.9%)

Memory: ✅ 29.098MB (SLO: <31.000MB -6.1%)

✅ low_match

Time: ✅ 110.107µs (SLO: <190.000µs 📉 -42.0%)

Memory: ✅ 431.398MB (SLO: <432.500MB 🟡 -0.3%)

✅ very_low_match

Time: ✅ 7.676ms (SLO: <9.150ms 📉 -16.1%)

Memory: ✅ 54.909MB (SLO: <55.000MB 🟡 -0.2%)

🔵 sethttpmeta - 32/32

🔵 No baseline data available for this suite

✅ all-disabled

Time: ✅ 12.322µs (SLO: <20.000µs 📉 -38.4%)

Memory: ✅ 29.629MB (SLO: <31.000MB -4.4%)

✅ all-enabled

Time: ✅ 42.452µs (SLO: <50.000µs 📉 -15.1%)

Memory: ✅ 29.491MB (SLO: <31.000MB -4.9%)

✅ collectipvariant_exists

Time: ✅ 42.981µs (SLO: <50.000µs 📉 -14.0%)

Memory: ✅ 29.550MB (SLO: <31.000MB -4.7%)

✅ no-collectipvariant

Time: ✅ 43.023µs (SLO: <50.000µs 📉 -14.0%)

Memory: ✅ 29.590MB (SLO: <31.000MB -4.5%)

✅ no-useragentvariant

Time: ✅ 41.300µs (SLO: <50.000µs 📉 -17.4%)

Memory: ✅ 29.531MB (SLO: <31.000MB -4.7%)

✅ obfuscation-no-query

Time: ✅ 43.256µs (SLO: <50.000µs 📉 -13.5%)

Memory: ✅ 29.550MB (SLO: <31.000MB -4.7%)

✅ obfuscation-regular-case-explicit-query

Time: ✅ 78.964µs (SLO: <90.000µs 📉 -12.3%)

Memory: ✅ 30.002MB (SLO: <31.000MB -3.2%)

✅ obfuscation-regular-case-implicit-query

Time: ✅ 79.747µs (SLO: <90.000µs 📉 -11.4%)

Memory: ✅ 29.904MB (SLO: <31.000MB -3.5%)

✅ obfuscation-send-querystring-disabled

Time: ✅ 157.418µs (SLO: <170.000µs -7.4%)

Memory: ✅ 29.963MB (SLO: <31.000MB -3.3%)

✅ obfuscation-worst-case-explicit-query

Time: ✅ 151.999µs (SLO: <160.000µs -5.0%)

Memory: ✅ 29.924MB (SLO: <31.000MB -3.5%)

✅ obfuscation-worst-case-implicit-query

Time: ✅ 158.103µs (SLO: <170.000µs -7.0%)

Memory: ✅ 30.042MB (SLO: <31.000MB -3.1%)

✅ useragentvariant_exists_1

Time: ✅ 41.864µs (SLO: <50.000µs 📉 -16.3%)

Memory: ✅ 29.590MB (SLO: <31.000MB -4.5%)

✅ useragentvariant_exists_2

Time: ✅ 42.898µs (SLO: <50.000µs 📉 -14.2%)

Memory: ✅ 29.511MB (SLO: <31.000MB -4.8%)

✅ useragentvariant_exists_3

Time: ✅ 42.315µs (SLO: <50.000µs 📉 -15.4%)

Memory: ✅ 29.511MB (SLO: <31.000MB -4.8%)

✅ useragentvariant_not_exists_1

Time: ✅ 41.728µs (SLO: <50.000µs 📉 -16.5%)

Memory: ✅ 29.531MB (SLO: <31.000MB -4.7%)

✅ useragentvariant_not_exists_2

Time: ✅ 41.721µs (SLO: <50.000µs 📉 -16.6%)

Memory: ✅ 29.570MB (SLO: <31.000MB -4.6%)

🔵 span - 26/26

🔵 No baseline data available for this suite

✅ add-event

Time: ✅ 23.005ms (SLO: <26.200ms 📉 -12.2%)

Memory: ✅ 48.512MB (SLO: <49.000MB 🟡 -1.0%)

✅ add-metrics

Time: ✅ 90.361ms (SLO: <98.350ms -8.1%)

Memory: ✅ 614.986MB (SLO: <961.000MB 📉 -36.0%)

✅ add-tags

Time: ✅ 148.213ms (SLO: <168.550ms 📉 -12.1%)

Memory: ✅ 615.089MB (SLO: <962.500MB 📉 -36.1%)

✅ get-context

Time: ✅ 21.428ms (SLO: <23.700ms -9.6%)

Memory: ✅ 47.345MB (SLO: <47.500MB 🟡 -0.3%)

✅ is-recording

Time: ✅ 21.606ms (SLO: <23.900ms -9.6%)

Memory: ✅ 47.344MB (SLO: <47.500MB 🟡 -0.3%)

✅ record-exception

Time: ✅ 40.763ms (SLO: <44.500ms -8.4%)

Memory: ✅ 40.380MB (SLO: <40.500MB 🟡 -0.3%)

✅ set-status

Time: ✅ 23.177ms (SLO: <26.000ms 📉 -10.9%)

Memory: ✅ 47.348MB (SLO: <47.500MB 🟡 -0.3%)

✅ start

Time: ✅ 21.083ms (SLO: <23.500ms 📉 -10.3%)

Memory: ✅ 47.357MB (SLO: <47.500MB 🟡 -0.3%)

✅ start-finish

Time: ✅ 50.312ms (SLO: <52.500ms -4.2%)

Memory: ✅ 29.098MB (SLO: <31.000MB -6.1%)

✅ start-finish-telemetry

Time: ✅ 51.475ms (SLO: <55.300ms -6.9%)

Memory: ✅ 29.098MB (SLO: <31.000MB -6.1%)

✅ start-finish-traceid128

Time: ✅ 53.337ms (SLO: <56.050ms -4.8%)

Memory: ✅ 29.098MB (SLO: <31.000MB -6.1%)

✅ start-traceid128

Time: ✅ 21.712ms (SLO: <24.600ms 📉 -11.7%)

Memory: ✅ 47.340MB (SLO: <47.500MB 🟡 -0.3%)

✅ update-name

Time: ✅ 22.028ms (SLO: <24.100ms -8.6%)

Memory: ✅ 47.854MB (SLO: <48.000MB 🟡 -0.3%)

🔵 telemetryaddmetric - 30/30

🔵 No baseline data available for this suite

✅ 1-count-metric-1-times

Time: ✅ 3.192µs (SLO: <10.000µs 📉 -68.1%)

Memory: ✅ 29.118MB (SLO: <31.000MB -6.1%)

✅ 1-count-metrics-100-times

Time: ✅ 209.930µs (SLO: <240.000µs 📉 -12.5%)

Memory: ✅ 29.137MB (SLO: <31.000MB -6.0%)

✅ 1-distribution-metric-1-times

Time: ✅ 2.985µs (SLO: <10.000µs 📉 -70.2%)

Memory: ✅ 29.059MB (SLO: <31.000MB -6.3%)

✅ 1-distribution-metrics-100-times

Time: ✅ 189.621µs (SLO: <210.000µs -9.7%)

Memory: ✅ 29.039MB (SLO: <31.000MB -6.3%)

✅ 1-gauge-metric-1-times

Time: ✅ 2.036µs (SLO: <10.000µs 📉 -79.6%)

Memory: ✅ 29.098MB (SLO: <31.000MB -6.1%)

✅ 1-gauge-metrics-100-times

Time: ✅ 124.109µs (SLO: <140.000µs 📉 -11.4%)

Memory: ✅ 29.078MB (SLO: <31.000MB -6.2%)

✅ 1-rate-metric-1-times

Time: ✅ 3.099µs (SLO: <10.000µs 📉 -69.0%)

Memory: ✅ 29.078MB (SLO: <31.000MB -6.2%)

✅ 1-rate-metrics-100-times

Time: ✅ 211.428µs (SLO: <230.000µs -8.1%)

Memory: ✅ 29.059MB (SLO: <31.000MB -6.3%)

✅ 100-count-metrics-100-times

Time: ✅ 21.078ms (SLO: <22.500ms -6.3%)

Memory: ✅ 29.118MB (SLO: <31.000MB -6.1%)

✅ 100-distribution-metrics-100-times

Time: ✅ 2.016ms (SLO: <2.100ms -4.0%)

Memory: ✅ 29.059MB (SLO: <31.000MB -6.3%)

✅ 100-gauge-metrics-100-times

Time: ✅ 1.270ms (SLO: <1.400ms -9.3%)

Memory: ✅ 29.118MB (SLO: <31.000MB -6.1%)

✅ 100-rate-metrics-100-times

Time: ✅ 2.138ms (SLO: <2.400ms 📉 -10.9%)

Memory: ✅ 29.137MB (SLO: <31.000MB -6.0%)

✅ flush-1-metric

Time: ✅ 4.176µs (SLO: <10.000µs 📉 -58.2%)

Memory: ✅ 29.098MB (SLO: <31.000MB -6.1%)

✅ flush-100-metrics

Time: ✅ 180.956µs (SLO: <200.000µs -9.5%)

Memory: ✅ 29.472MB (SLO: <31.000MB -4.9%)

✅ flush-1000-metrics

Time: ✅ 2.180ms (SLO: <2.350ms -7.2%)

Memory: ✅ 30.278MB (SLO: <31.000MB -2.3%)

🔵 tracer - 6/6

🔵 No baseline data available for this suite

✅ large

Time: ✅ 29.535ms (SLO: <32.950ms 📉 -10.4%)

Memory: ✅ 30.278MB (SLO: <31.000MB -2.3%)

✅ medium

Time: ✅ 2.901ms (SLO: <3.200ms -9.3%)

Memory: ✅ 29.098MB (SLO: <31.000MB -6.1%)

✅ small

Time: ✅ 330.571µs (SLO: <370.000µs 📉 -10.7%)

Memory: ✅ 29.098MB (SLO: <31.000MB -6.1%)

ddtrace/contrib/internal/mcp/patch.py

ddtrace/llmobs/_integrations/mcp.py

releasenotes/notes/trace-mcp-distributed-tracing-998f8cb35062a77e.yaml

ncybul

minor comments but functionality looks good so far! Might be nice to include an example script and resulting trace in the PR description to show that this works in-app 😄

lievan · 2025-07-21T17:54:44Z

@ncybul updated the description w an example!

ncybul

Thanks for adding an example! LGTM

.github/CODEOWNERS

ddtrace/llmobs/_integrations/mcp.py

…stributed-mcp

.github/CODEOWNERS

ddtrace/contrib/internal/mcp/patch.py

releasenotes/notes/trace-mcp-distributed-tracing-fa5df4e00ab94b36.yaml

lievan added 4 commits July 15, 2025 22:59

distributed mcp

b55965d

dist tracing rel note

7ebed40

use getattr

a17ee14

clarify comment

3de752d

lievan requested review from a team as code owners July 17, 2025 12:51

lievan requested review from duncanista, sabrenner, brettlangdon and wantsui July 17, 2025 12:51

bad cmt

4a41e9f

dont gaurd behind llmobs'

1b9771e

brettlangdon reviewed Jul 17, 2025

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Yun-Kim reviewed Jul 17, 2025

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ncybul reviewed Jul 18, 2025

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lievan added 4 commits July 20, 2025 17:11

dont modify stuff when llmobs isnt enabled

ef3ee46

small change

957a7b4

rel note

04d0dd2

fix

377d641

codeowners, rel note

f61646b

lievan requested a review from a team as a code owner July 22, 2025 14:57

lievan added 3 commits July 22, 2025 13:44

Merge branch 'main' into evan.li/distributed-mcp

51b3acb

conf

490d1a0

Merge branch 'main' into evan.li/distributed-mcp

c4bce67

emmettbutler approved these changes Jul 23, 2025

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ncybul approved these changes Jul 23, 2025

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Yun-Kim reviewed Jul 23, 2025

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lievan added 8 commits July 23, 2025 22:58

Merge branch 'main' of github.com:DataDog/dd-trace-py into evan.li/di…

0deeea1

…stributed-mcp

support apm dist tracing

14dfa9c

pin api

0882556

fix snaps

1ad406a

codeowner

d1fcf3a

privatize headers field in meta'

e99d1ad

support turning off dist tracing

0a747e8

fix snapshots

95642ef

lievan force-pushed the evan.li/distributed-mcp branch from e6c16af to 95642ef Compare July 24, 2025 20:09

Yun-Kim reviewed Jul 24, 2025

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use trace utils method

0076603

Yun-Kim approved these changes Jul 25, 2025

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lievan enabled auto-merge (squash) July 28, 2025 14:07

Merge branch 'main' into evan.li/distributed-mcp

411a83f

lievan merged commit 26508d7 into main Jul 29, 2025
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lievan deleted the evan.li/distributed-mcp branch July 29, 2025 15:11

jer96 mentioned this pull request Jul 31, 2025

Fix/mcp tracing strands-agents/sdk-python#569

Open

7 tasks

feat(llmobs): distributed tracing for mcp #14045

feat(llmobs): distributed tracing for mcp #14045

Conversation

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Example script

Checklist

Reviewer Checklist

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Bootstrap import analysis

Summary

Import time breakdown

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Performance SLOs

⚠️ context_with_data_listeners

✅ context_with_data_no_listeners

⚠️ context_with_data_only_all_listeners

✅ get_item_exists

✅ get_item_missing

✅ set_item

✅ appsec

✅ exception-replay-enabled

✅ iast

✅ profiler

✅ span-code-origin

✅ tracer

✅ tracer-and-profiler

✅ tracer-no-caches

✅ tracer-no-databases

✅ tracer-no-middleware

✅ tracer-no-templates

✅ errortracking-enabled-all

✅ errortracking-enabled-user

✅ tracer-enabled

✅ errortracking-enabled-all

✅ errortracking-enabled-user

✅ tracer-enabled

✅ appsec-get

✅ appsec-post

✅ appsec-telemetry

✅ debugger

✅ iast-get

✅ profiler

✅ tracer

✅ appsec-enabled

✅ iast-enabled

✅ tracer-enabled

✅ all_styles_all_headers

✅ b3_headers

✅ b3_single_headers

✅ datadog_tracecontext_tracestate_not_propagated_on_trace_id_no_match

✅ datadog_tracecontext_tracestate_propagated_on_trace_id_match

✅ empty_headers

✅ full_t_id_datadog_headers

✅ invalid_priority_header

✅ invalid_span_id_header

✅ invalid_tags_header

✅ invalid_trace_id_header

✅ large_header_no_matches

✅ large_valid_headers_all

✅ medium_header_no_matches

✅ medium_valid_headers_all

✅ none_propagation_style

✅ tracecontext_headers

✅ valid_headers_all

✅ valid_headers_basic

✅ wsgi_empty_headers

✅ wsgi_invalid_priority_header

✅ wsgi_invalid_span_id_header

✅ wsgi_invalid_tags_header

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