[eli-r-ph]

💡 Motivation and Context

AsyncPosthog has no enable_exception_autocapture setting, but two exception paths read it directly:

• LangChain CallbackHandler: a failed run loses its $ai_generation, $ai_span or $ai_trace event. The AttributeError happens inside a LangChain callback, which LangChain swallows, so the event is never sent.
• new_context(client=<AsyncPosthog>): raises AttributeError unless capture_exceptions is passed.

Changes:

• Both paths read the setting with getattr(..., False), as the handler already does for privacy_mode. A client without the setting does not capture exceptions by default. capture_exceptions=True still captures through the given client.
• Regression tests for both, each failing before its fix: a client with no enable_exception_autocapture in the LangChain tests, and a real AsyncPosthog in the context tests.

💚 How did you test it?

• pytest posthog/test: everything passes except three fork tests in test_metrics_autocapture.py. Those also fail intermittently with the branch reset to main's code, and pass on reruns.
• mypy with the baseline filter and ruff are clean.

📝 Checklist

• All commits are signed (see Commit signing)
• I reviewed the submitted code.
• I added tests to verify the changes.
• I updated the docs if needed.
• No breaking change or entry added to the changelog.

If releasing new changes

• Ran sampo add to generate a changeset file

🤖 Agent context

Autonomy: Human-driven (agent-assisted)

Claude Code (Claude Opus 5.5) found both bugs while extending capture v1 smoke tests, then wrote the fixes and tests. The other integrations that read this setting (Django, Flask, ASGI, DRF) take a Client and are unchanged.

🤖 Generated with Claude Code

[github-actions]

posthog-python Compliance Report

Date: 2026-11-08T21:51:04.106738+00:00
Duration: 260087ms

✅ All Tests Passed!

121/121 tests passed

---

Capture_V1 Tests

✅ 95/95 tests passed

View Details

Test	Status	Duration
Endpoint And Method.Targets V1 Endpoint	✅	517ms
Endpoint And Method.Does Not Use Legacy Endpoints	✅	510ms
Required Headers.Has Authorization Bearer Header	✅	511ms
Required Headers.Has Content Type Json	✅	510ms
Required Headers.Has Posthog Sdk Info Format	✅	510ms
Required Headers.Has Posthog Attempt Header	✅	510ms
Required Headers.Has Posthog Request Id	✅	510ms
Required Headers.Has Posthog Request Timestamp	✅	511ms
Required Headers.Has User Agent	✅	510ms
Body Format.Body Has Created At And Batch	✅	510ms
Body Format.No Api Key In Body	✅	510ms
Body Format.No Sent At In Body	✅	511ms
Event Format.Event Has Required Root Fields	✅	511ms
Event Format.Event Uuid Is Valid	✅	512ms
Event Format.Event Timestamp Is Rfc3339	✅	510ms
Event Format.Non Utc Event Timestamp Is Converted To Utc	✅	528ms
Event Format.Distinct Id Is String	✅	510ms
Event Format.Distinct Id At Root Not Properties	✅	510ms
Event Format.Custom Properties Preserved	✅	510ms
Event Format.Set Properties Preserved	✅	510ms
Event Format.Set Once Properties Preserved	✅	510ms
Event Format.Groups Properties Preserved	✅	510ms
Event Format.Sdk Generates Uuid If Not Provided	✅	511ms
Event Format.Event Has Required Root Fields Batch	✅	513ms
Event Format.Event Uuid Is Valid Batch	✅	514ms
Event Format.Event Timestamp Is Rfc3339 Batch	✅	513ms
Event Format.Distinct Id Is String Batch	✅	513ms
Event Format.Distinct Id At Root Not Properties Batch	✅	514ms
Event Format.Custom Properties Preserved Batch	✅	513ms
Event Format.Set Properties Preserved Batch	✅	513ms
Event Format.Set Once Properties Preserved Batch	✅	515ms
Event Format.Groups Properties Preserved Batch	✅	513ms
Event Format.Sdk Generates Uuid If Not Provided Batch	✅	514ms
Batch Behavior.Multiple Events In Single Batch	✅	517ms
Batch Behavior.Batch Envelope Smoke	✅	516ms
Batch Behavior.Flush With No Events Sends Nothing	✅	506ms
Batch Behavior.Flush At Triggers Batch	✅	1012ms
Batch Behavior.Created At Reflects Batch Creation Time	✅	510ms
Deduplication.Generates Unique Uuids	✅	519ms
Deduplication.Different Events Same Content Different Uuids	✅	513ms
Deduplication.Preserves Uuid On Retry	✅	6514ms
Deduplication.Preserves Timestamp On Retry	✅	6519ms
Deduplication.Preserves Uuid And Timestamp On Batch Retry	✅	6524ms
Deduplication.No Duplicate Events In Batch	✅	518ms
Header Behavior On Retry.Attempt Header Starts At One	✅	510ms
Header Behavior On Retry.Attempt Header Increments On Retry	✅	13523ms
Header Behavior On Retry.Request Id Preserved On Retry	✅	6515ms
Header Behavior On Retry.Different Requests Have Different Request Ids	✅	3020ms
Header Behavior On Retry.Request Timestamp Changes On Retry	✅	6515ms
Response Format Validation.Success Response Has Uuid Keyed Results	✅	511ms
Response Format Validation.Success Response Has Ok For Each Event	✅	514ms
Response Format Validation.Success No Retry After When All Ok	✅	513ms
Response Format Validation.Success Retry After Present When Retry Events	✅	1515ms
Response Format Validation.Success No Retry After When Drop Only	✅	513ms
Response Format Validation.Response Echoes Request Id	✅	510ms
Retry Behavior.Retries On 408	✅	6519ms
Retry Behavior.Retries On 500	✅	6519ms
Retry Behavior.Retries On 503	✅	8522ms
Retry Behavior.Retries On 504	✅	6520ms
Retry Behavior.Retryable Errors Have Retry After	✅	3517ms
Retry Behavior.Respects Retry After On Retryable Error	✅	11521ms
Retry Behavior.Does Not Retry On 400	✅	2514ms
Retry Behavior.Does Not Retry On 401	✅	2514ms
Retry Behavior.Does Not Retry On 402	✅	2513ms
Retry Behavior.Does Not Retry On 413	✅	2514ms
Retry Behavior.Does Not Retry On 415	✅	2512ms
Retry Behavior.Non Retryable Errors Have No Retry After	✅	2513ms
Retry Behavior.Implements Backoff	✅	22532ms
Retry Behavior.Max Retries Respected	✅	22536ms
Partial Batch Handling.Handles 200 Full Success	✅	2511ms
Partial Batch Handling.Handles 200 With All Ok	✅	3517ms
Partial Batch Handling.Does Not Retry Dropped Events	✅	3516ms
Partial Batch Handling.Does Not Retry Limited Events	✅	3516ms
Partial Batch Handling.Prunes Ok Events On Partial Retry	✅	6519ms
Partial Batch Handling.Prunes Dropped Events On Partial Retry	✅	6521ms
Partial Batch Handling.Retries Only Retry Events From Partial	✅	6522ms
Partial Batch Handling.Partial Retry Preserves Uuids	✅	6521ms
Partial Batch Handling.Partial Retry Attempt Header Increments	✅	6516ms
Partial Batch Handling.Partial Retry Request Id Preserved	✅	6521ms
Partial Batch Handling.Respects Retry After On Partial	✅	8520ms
Partial Batch Handling.Unknown Result Treated As Terminal	✅	3516ms
Partial Batch Handling.Mixed Ok Drop Limited No Retry	✅	3516ms
Compression.Sends Gzip Content Encoding	✅	512ms
Compression.No Content Encoding When Disabled	✅	510ms
Compression.Compressed Body Is Decompressible	✅	510ms
Error Handling.Does Not Retry On Unknown 4Xx	✅	2512ms
Event Options.Cookieless Mode Override	✅	510ms
Event Options.Disable Skew Correction Override	✅	510ms
Event Options.Process Person Profile Override	✅	510ms
Event Options.Product Tour Id Override	✅	510ms
Event Options.Unset Options Omitted	✅	510ms
Event Options.Options Override In Batch	✅	514ms
Geoip And Historical Migration.Geoip Disable Injected Into Properties	✅	510ms
Geoip And Historical Migration.Historical Migration Set In Body	✅	510ms
Geoip And Historical Migration.Historical Migration Absent By Default	✅	510ms

Capture_Ai Tests

✅ 5/5 tests passed

View Details

Test	Status	Duration
Routing.Capture Ai Posts To Ai Endpoint	✅	511ms
Routing.Capture Does Not Reroute Ai Named Events	✅	510ms
Identity.Capture Ai Event Has Uuid	✅	510ms
Identity.Capture Ai Keeps Supplied Uuid	✅	511ms
Timestamp Format.Non Utc Event Timestamp Is Converted To Utc	✅	510ms

Feature_Flags Tests

✅ 17/17 tests passed

View Details

Test	Status	Duration
Request Payload.Request With Person Properties Device Id	✅	11ms
Request Payload.Flags Request Uses V4 Query Param	✅	9ms
Request Payload.Flags Request Hits Flags Path Not Decide	✅	9ms
Request Payload.Flags Request Omits Authorization Header	✅	10ms
Request Payload.Token In Flags Body Matches Init	✅	10ms
Request Payload.Groups Round Trip	✅	9ms
Request Payload.Groups Default To Empty Object	✅	10ms
Request Payload.Disable Geoip False Propagates As Geoip Disable False	✅	10ms
Request Payload.Disable Geoip Omitted Defaults To False	✅	9ms
Request Payload.Flag Keys To Evaluate Contains Only Requested Key	✅	10ms
Request Lifecycle.No Flags Request On Init Alone	✅	3ms
Request Lifecycle.No Flags Request On Normal Capture	✅	510ms
Request Lifecycle.Two Flag Calls Produce Two Remote Requests	✅	14ms
Request Lifecycle.Mock Response Value Is Returned To Caller	✅	10ms
Retry Behavior.Retries Flags On 502	✅	314ms
Retry Behavior.Retries Flags On 504	✅	313ms
Side Effect Events.Get Feature Flag Captures Feature Flag Called Event	✅	512ms

Feature_Flags_Local_Evaluation Tests

✅ 4/4 tests passed

View Details

Test	Status	Duration
Versioned Boolean Matching.Matching Version Missing	✅	69ms
Versioned Boolean Matching.Matching Version 1	✅	69ms
Versioned Boolean Matching.Matching Version 2	✅	71ms
Versioned Boolean Matching.Version Only Reload 1 2 1 2 Missing	✅	37ms

[github-actions]

SDK performance: posthog-python

Benchmarks completed. No changes flagged for review.

Flags require at least a 5% change in the median and all six pairs agreeing on direction. This is a noise filter, not proof of a performance change or a CI gate.

View all results

Test	Measurement	Before PR	With PR	Change	Assessment
Capture and deliver events (32-byte payload, burst) Shard: capture	Managed heap after settling	—	—	—	unavailable; base:​ unsupported; head:​ unsupported; base:​ CPython has no uninstrumented total managed-heap byte counter; tracing would distort this RSS pass.​; head:​ CPython has no uninstrumented total managed-heap byte counter; tracing would distort this RSS pass.​
Capture and deliver events (4,096-byte payload, burst) Shard: capture	Managed heap after settling	—	—	—	unavailable; base:​ unsupported; head:​ unsupported; base:​ CPython has no uninstrumented total managed-heap byte counter; tracing would distort this RSS pass.​; head:​ CPython has no uninstrumented total managed-heap byte counter; tracing would distort this RSS pass.​
Capture and deliver events (32-byte payload, steady) Shard: capture	Managed heap after settling	—	—	—	unavailable; base:​ unsupported; head:​ unsupported; base:​ CPython has no uninstrumented total managed-heap byte counter; tracing would distort this RSS pass.​; head:​ CPython has no uninstrumented total managed-heap byte counter; tracing would distort this RSS pass.​
Capture and deliver events (4,096-byte payload, steady) Shard: capture	Managed heap after settling	—	—	—	unavailable; base:​ unsupported; head:​ unsupported; base:​ CPython has no uninstrumented total managed-heap byte counter; tracing would distort this RSS pass.​; head:​ CPython has no uninstrumented total managed-heap byte counter; tracing would distort this RSS pass.​
Queue an event (32-byte payload) Shard: capture	Allocated memory per operation	—	—	—	unavailable; base:​ unsupported; head:​ unsupported; base:​ Background preparation has no public completion boundary before flush; see capture.​drain for full-pipeline allocations.​; head:​ Background preparation has no public completion boundary before flush; see capture.​drain for full-pipeline allocations.​
Queue an event (32-byte payload) Shard: capture	Allocations per operation	—	—	—	unavailable; base:​ unsupported; head:​ unsupported; base:​ Background preparation has no public completion boundary before flush; see capture.​drain for full-pipeline allocations.​; head:​ Background preparation has no public completion boundary before flush; see capture.​drain for full-pipeline allocations.​
Queue an event (4,096-byte payload) Shard: capture	Allocated memory per operation	—	—	—	unavailable; base:​ unsupported; head:​ unsupported; base:​ Background preparation has no public completion boundary before flush; see capture.​drain for full-pipeline allocations.​; head:​ Background preparation has no public completion boundary before flush; see capture.​drain for full-pipeline allocations.​
Queue an event (4,096-byte payload) Shard: capture	Allocations per operation	—	—	—	unavailable; base:​ unsupported; head:​ unsupported; base:​ Background preparation has no public completion boundary before flush; see capture.​drain for full-pipeline allocations.​; head:​ Background preparation has no public completion boundary before flush; see capture.​drain for full-pipeline allocations.​
Evaluate 1,000 flags under concurrent load Shard: flags-memory	Managed heap after settling	—	—	—	unavailable; base:​ unsupported; head:​ unsupported; base:​ CPython has no uninstrumented total managed-heap byte counter; tracing would distort this RSS pass.​; head:​ CPython has no uninstrumented total managed-heap byte counter; tracing would distort this RSS pass.​
Refresh 1,000 flag definitions Shard: flags-memory	Managed heap after settling	—	—	—	unavailable; base:​ unsupported; head:​ unsupported; base:​ CPython has no uninstrumented total managed-heap byte counter; tracing would distort this RSS pass.​; head:​ CPython has no uninstrumented total managed-heap byte counter; tracing would distort this RSS pass.​
Capture and deliver events (32-byte payload, burst) Shard: capture	Allocated memory per operation	113.54 KiB/op	113.54 KiB/op	<0.1% less memory	Not flagged
Capture and deliver events (32-byte payload, burst) Shard: capture	Allocations per operation	1,096.6 count/op	1,096.54 count/op	<0.1% fewer	Not flagged
Capture and deliver events (32-byte payload, burst) Shard: capture	Time per operation	111.22 µs/op	114.24 µs/op	2.7% more time	Not flagged
Capture and deliver events (32-byte payload, burst) Shard: capture	Idle process memory (RSS)	36.03 MiB	36.09 MiB	0.2% more memory	Not flagged
Capture and deliver events (32-byte payload, burst) Shard: capture	Observed peak process memory (RSS)	37.78 MiB	37.83 MiB	0.1% more memory	Not flagged
Capture and deliver events (32-byte payload, burst) Shard: capture	Process memory after settling (RSS)	37.78 MiB	37.83 MiB	0.1% more memory	Not flagged
Capture and deliver events (32-byte payload, burst) Shard: capture	Process CPU time per operation	111.68 µs/op	115.6 µs/op	3.5% more time	Not flagged
Capture and deliver events (32-byte payload, burst) Shard: capture	Lifetime peak process memory (RSS)	40.2 MiB	40.2 MiB	No observed change	Not flagged
Capture and deliver events (4,096-byte payload, burst) Shard: capture	Allocated memory per operation	166.1 KiB/op	166.11 KiB/op	<0.1% more memory	Not flagged
Capture and deliver events (4,096-byte payload, burst) Shard: capture	Allocations per operation	1,089.63 count/op	1,089.64 count/op	<0.1% more	Not flagged
Capture and deliver events (4,096-byte payload, burst) Shard: capture	Time per operation	149.42 µs/op	152.16 µs/op	1.8% more time	Not flagged
Capture and deliver events (4,096-byte payload, burst) Shard: capture	Idle process memory (RSS)	40.8 MiB	40.76 MiB	0.1% less memory	Not flagged
Capture and deliver events (4,096-byte payload, burst) Shard: capture	Observed peak process memory (RSS)	45.91 MiB	45.85 MiB	0.1% less memory	Not flagged
Capture and deliver events (4,096-byte payload, burst) Shard: capture	Process memory after settling (RSS)	45.91 MiB	45.85 MiB	0.1% less memory	Not flagged
Capture and deliver events (4,096-byte payload, burst) Shard: capture	Process CPU time per operation	143.25 µs/op	145.76 µs/op	1.8% more time	Not flagged
Capture and deliver events (4,096-byte payload, burst) Shard: capture	Lifetime peak process memory (RSS)	50.67 MiB	50.7 MiB	<0.1% more memory	Not flagged
Capture and deliver events (32-byte payload, steady) Shard: capture	Allocated memory per operation	117.68 KiB/op	117.68 KiB/op	<0.1% less memory	Not flagged
Capture and deliver events (32-byte payload, steady) Shard: capture	Allocations per operation	1,136.62 count/op	1,136.59 count/op	<0.1% fewer	Not flagged
Capture and deliver events (32-byte payload, steady) Shard: capture	Time per operation	125.24 µs/op	128.85 µs/op	2.9% more time	Not flagged
Capture and deliver events (32-byte payload, steady) Shard: capture	Idle process memory (RSS)	35.99 MiB	35.96 MiB	<0.1% less memory	Not flagged
Capture and deliver events (32-byte payload, steady) Shard: capture	Observed peak process memory (RSS)	36.09 MiB	36.07 MiB	<0.1% less memory	Not flagged
Capture and deliver events (32-byte payload, steady) Shard: capture	Process memory after settling (RSS)	36.09 MiB	36.07 MiB	<0.1% less memory	Not flagged
Capture and deliver events (32-byte payload, steady) Shard: capture	Process CPU time per operation	123.57 µs/op	128.28 µs/op	3.8% more time	Not flagged
Capture and deliver events (32-byte payload, steady) Shard: capture	Lifetime peak process memory (RSS)	40.2 MiB	40.2 MiB	No observed change	Not flagged
Capture and deliver events (4,096-byte payload, steady) Shard: capture	Allocated memory per operation	170.57 KiB/op	170.57 KiB/op	<0.1% less memory	Not flagged
Capture and deliver events (4,096-byte payload, steady) Shard: capture	Allocations per operation	1,129.48 count/op	1,129.48 count/op	<0.1% fewer	Not flagged
Capture and deliver events (4,096-byte payload, steady) Shard: capture	Time per operation	150.72 µs/op	149.27 µs/op	1% less time	Not flagged
Capture and deliver events (4,096-byte payload, steady) Shard: capture	Idle process memory (RSS)	40.74 MiB	40.73 MiB	<0.1% less memory	Not flagged
Capture and deliver events (4,096-byte payload, steady) Shard: capture	Observed peak process memory (RSS)	40.74 MiB	40.74 MiB	<0.1% less memory	Not flagged
Capture and deliver events (4,096-byte payload, steady) Shard: capture	Process memory after settling (RSS)	40.74 MiB	40.74 MiB	<0.1% less memory	Not flagged
Capture and deliver events (4,096-byte payload, steady) Shard: capture	Process CPU time per operation	143.22 µs/op	141.7 µs/op	1.1% less time	Not flagged
Capture and deliver events (4,096-byte payload, steady) Shard: capture	Lifetime peak process memory (RSS)	41.06 MiB	40.96 MiB	0.2% less memory	Not flagged
Queue an event (32-byte payload) Shard: capture	Caller-thread CPU time per operation	93.02 µs/op	84.67 µs/op	9% less time	Not flagged
Queue an event (32-byte payload) Shard: capture	Time per operation	95.5 µs/op	91.7 µs/op	4% less time	Not flagged
Queue an event (4,096-byte payload) Shard: capture	Caller-thread CPU time per operation	81.24 µs/op	86.08 µs/op	6% more time	Not flagged
Queue an event (4,096-byte payload) Shard: capture	Time per operation	90.51 µs/op	90.02 µs/op	0.5% less time	Not flagged
Evaluate all 10 flags Shard: flags-scaling	Allocated memory per operation	200.98 KiB/op	200.98 KiB/op	No observed change	Not flagged
Evaluate all 10 flags Shard: flags-scaling	Allocations per operation	2,339.33 count/op	2,339.33 count/op	No observed change	Not flagged
Evaluate all 10 flags Shard: flags-scaling	Time per operation	133.28 µs/op	132.1 µs/op	0.9% less time	Not flagged
Evaluate all 10 flags Shard: flags-scaling	Process CPU time per operation	133.27 µs/op	132.08 µs/op	0.9% less time	Not flagged
Evaluate all 100 flags Shard: flags-scaling	Allocated memory per operation	1.93 MiB/op	1.93 MiB/op	No observed change	Not flagged
Evaluate all 100 flags Shard: flags-scaling	Allocations per operation	23,013.56 count/op	23,013.56 count/op	No observed change	Not flagged
Evaluate all 100 flags Shard: flags-scaling	Time per operation	1.24 ms/op	1.24 ms/op	0.3% less time	Not flagged
Evaluate all 100 flags Shard: flags-scaling	Process CPU time per operation	1.24 ms/op	1.24 ms/op	0.3% less time	Not flagged
Evaluate all 1,000 flags Shard: flags-scaling	Allocated memory per operation	19.24 MiB/op	19.24 MiB/op	No observed change	Not flagged
Evaluate all 1,000 flags Shard: flags-scaling	Allocations per operation	229,654.94 count/op	229,654.94 count/op	No observed change	Not flagged
Evaluate all 1,000 flags Shard: flags-scaling	Time per operation	12.23 ms/op	12.24 ms/op	0.1% more time	Not flagged
Evaluate all 1,000 flags Shard: flags-scaling	Process CPU time per operation	12.22 ms/op	12.24 ms/op	0.1% more time	Not flagged
Evaluate 1,000 flags under concurrent load Shard: flags-memory	Idle process memory (RSS)	42.35 MiB	42.4 MiB	0.1% more memory	Not flagged
Evaluate 1,000 flags under concurrent load Shard: flags-memory	Observed peak process memory (RSS)	42.68 MiB	42.68 MiB	<0.1% less memory	Not flagged
Evaluate 1,000 flags under concurrent load Shard: flags-memory	Process memory after settling (RSS)	42.68 MiB	42.68 MiB	<0.1% less memory	Not flagged
Evaluate 1,000 flags under concurrent load Shard: flags-memory	Lifetime peak process memory (RSS)	42.56 MiB	42.45 MiB	0.3% less memory	Not flagged
Refresh 1,000 flag definitions Shard: flags-memory	Idle process memory (RSS)	42.08 MiB	41.8 MiB	0.7% less memory	Not flagged
Refresh 1,000 flag definitions Shard: flags-memory	Observed peak process memory (RSS)	42.11 MiB	42.13 MiB	<0.1% more memory	Not flagged
Refresh 1,000 flag definitions Shard: flags-memory	Process memory after settling (RSS)	41.48 MiB	41.81 MiB	0.8% more memory	Not flagged
Refresh 1,000 flag definitions Shard: flags-memory	Lifetime peak process memory (RSS)	42.5 MiB	42.49 MiB	<0.1% less memory	Not flagged
Evaluate one boolean flag Shard: flags-single	Allocated memory per operation	15.05 KiB/op	15.05 KiB/op	No observed change	Not flagged
Evaluate one boolean flag Shard: flags-single	Allocations per operation	173.76 count/op	173.76 count/op	No observed change	Not flagged
Evaluate one boolean flag Shard: flags-single	Time per operation	9.77 µs/op	9.78 µs/op	0.2% more time	Not flagged
Evaluate one boolean flag Shard: flags-single	Process CPU time per operation	9.77 µs/op	9.78 µs/op	0.2% more time	Not flagged
Evaluate a cohort-filtered flag Shard: flags-single	Allocated memory per operation	23.12 KiB/op	23.12 KiB/op	No observed change	Not flagged
Evaluate a cohort-filtered flag Shard: flags-single	Allocations per operation	270.27 count/op	270.27 count/op	No observed change	Not flagged
Evaluate a cohort-filtered flag Shard: flags-single	Time per operation	12.93 µs/op	12.94 µs/op	0.1% more time	Not flagged
Evaluate a cohort-filtered flag Shard: flags-single	Process CPU time per operation	12.93 µs/op	12.94 µs/op	0.1% more time	Not flagged
Evaluate a flag (early match) Shard: flags-single	Allocated memory per operation	35.71 KiB/op	35.71 KiB/op	No observed change	Not flagged
Evaluate a flag (early match) Shard: flags-single	Allocations per operation	387.27 count/op	387.27 count/op	No observed change	Not flagged
Evaluate a flag (early match) Shard: flags-single	Time per operation	18.76 µs/op	18.54 µs/op	1.2% less time	Not flagged
Evaluate a flag (early match) Shard: flags-single	Process CPU time per operation	18.76 µs/op	18.54 µs/op	1.2% less time	Not flagged
Evaluate a flag (late match) Shard: flags-single	Allocated memory per operation	53.59 KiB/op	53.59 KiB/op	No observed change	Not flagged
Evaluate a flag (late match) Shard: flags-single	Allocations per operation	576.27 count/op	576.27 count/op	No observed change	Not flagged
Evaluate a flag (late match) Shard: flags-single	Time per operation	26.36 µs/op	26.24 µs/op	0.4% less time	Not flagged
Evaluate a flag (late match) Shard: flags-single	Process CPU time per operation	26.35 µs/op	26.24 µs/op	0.4% less time	Not flagged
Evaluate a flag (no match) Shard: flags-single	Allocated memory per operation	52.14 KiB/op	52.14 KiB/op	No observed change	Not flagged
Evaluate a flag (no match) Shard: flags-single	Allocations per operation	556.77 count/op	556.77 count/op	No observed change	Not flagged
Evaluate a flag (no match) Shard: flags-single	Time per operation	25.02 µs/op	25.13 µs/op	0.4% more time	Not flagged
Evaluate a flag (no match) Shard: flags-single	Process CPU time per operation	25.02 µs/op	25.13 µs/op	0.4% more time	Not flagged
Evaluate a property-filtered flag Shard: flags-single	Allocated memory per operation	17.84 KiB/op	17.84 KiB/op	No observed change	Not flagged
Evaluate a property-filtered flag Shard: flags-single	Allocations per operation	198.27 count/op	198.27 count/op	No observed change	Not flagged
Evaluate a property-filtered flag Shard: flags-single	Time per operation	10.86 µs/op	10.78 µs/op	0.8% less time	Not flagged
Evaluate a property-filtered flag Shard: flags-single	Process CPU time per operation	10.86 µs/op	10.78 µs/op	0.8% less time	Not flagged
Evaluate a regex-filtered flag Shard: flags-single	Allocated memory per operation	19.23 KiB/op	19.23 KiB/op	No observed change	Not flagged
Evaluate a regex-filtered flag Shard: flags-single	Allocations per operation	210.77 count/op	210.77 count/op	No observed change	Not flagged
Evaluate a regex-filtered flag Shard: flags-single	Time per operation	11.48 µs/op	11.52 µs/op	0.4% more time	Not flagged
Evaluate a regex-filtered flag Shard: flags-single	Process CPU time per operation	11.48 µs/op	11.52 µs/op	0.4% more time	Not flagged
Evaluate a rollout flag Shard: flags-single	Allocated memory per operation	14.04 KiB/op	14.04 KiB/op	No observed change	Not flagged
Evaluate a rollout flag Shard: flags-single	Allocations per operation	160.76 count/op	160.76 count/op	No observed change	Not flagged
Evaluate a rollout flag Shard: flags-single	Time per operation	9.15 µs/op	9.1 µs/op	0.5% less time	Not flagged
Evaluate a rollout flag Shard: flags-single	Process CPU time per operation	9.15 µs/op	9.1 µs/op	0.5% less time	Not flagged
Evaluate a multivariate flag Shard: flags-single	Allocated memory per operation	15.21 KiB/op	15.21 KiB/op	No observed change	Not flagged
Evaluate a multivariate flag Shard: flags-single	Allocations per operation	177.77 count/op	177.77 count/op	No observed change	Not flagged
Evaluate a multivariate flag Shard: flags-single	Time per operation	10.05 µs/op	10.15 µs/op	1% more time	Not flagged
Evaluate a multivariate flag Shard: flags-single	Process CPU time per operation	10.05 µs/op	10.14 µs/op	0.9% more time	Not flagged

Values are medians of paired measurements. Not flagged does not mean unchanged. Unavailable means a measurement could not be provided, not zero. Estimated allocation measurements retain their instrumentation uncertainty. RSS measures the whole process, not just SDK allocations; observed peaks are sampled checkpoints. Paired ranges in the diagnostics describe variability, not confidence intervals.

Each shard uses its own runner; compare Before PR against With PR within a row, not across shards.

Compared ac55b350a0f8391593de5f2e2b2fa0d6eebc80dc → 7e883ab945b8a8704a70e30128d9c15b1824f7e6.

Full report and diagnostics

102 metric rows; 102 rows shown in all results. Omitted or shortened data remain in comparison.json, including per-runner environments, resource limits, measurement methods, samples and checkpoints.

[marandaneto]

The code looks good; no qualifying findings. Verdict: correct.