USMON-1008: Parse Produce Response

[DanielLavie]

What does this PR do?

This PR adds support for parsing Kafka produce responses in the Kernel as part of the USM Kafka monitoring feature in system-probe. It includes capturing error codes and measuring latency for Kafka produce requests.

Motivation

Capturing error codes and latency for Kafka produce requests is crucial, as it provides the same visibility for produce requests that we already offer for fetch requests. This ensures that customers can effectively monitor and analyze their Kafka traffic.

Additional Notes

Possible Drawbacks / Trade-offs

Currently, we only support parsing produce requests with a single partition, so we’ve also limited response parsing to single-partition produce requests. While this hasn't caused issues in our dogfooding environment or with customers so far, we may revisit this decision in the future. Expanding support for multiple partitions would add complexity to the code.

Describe how to test/QA your changes

Load test results:

Link to staging deployment

[pr-commenter]

Test changes on VM

Use this command from test-infra-definitions to manually test this PR changes on a VM:

inv create-vm --pipeline-id=43523913 --os-family=ubuntu

Note: This applies to commit c533f19

[pr-commenter]

Regression Detector

Regression Detector Results

Run ID: b1775dee-5c6d-4c43-b13c-778a9338d03a Metrics dashboard Target profiles

Baseline: b8d3295
Comparison: 6faf8b6

Performance changes are noted in the perf column of each table:

• ✅ = significantly better comparison variant performance
• ❌ = significantly worse comparison variant performance
• ➖ = no significant change in performance

No significant changes in experiment optimization goals

Confidence level: 90.00%
Effect size tolerance: |Δ mean %| ≥ 5.00%

There were no significant changes in experiment optimization goals at this confidence level and effect size tolerance.

Fine details of change detection per experiment

perf	experiment	goal	Δ mean %	Δ mean % CI	links
➖	pycheck_lots_of_tags	% cpu utilization	+2.10	[-0.44, +4.64]	Logs
➖	basic_py_check	% cpu utilization	+2.08	[-0.71, +4.87]	Logs
➖	tcp_syslog_to_blackhole	ingress throughput	+0.51	[-12.16, +13.17]	Logs
➖	uds_dogstatsd_to_api_cpu	% cpu utilization	+0.33	[-0.55, +1.21]	Logs
➖	otel_to_otel_logs	ingress throughput	+0.06	[-0.75, +0.87]	Logs
➖	idle	memory utilization	+0.06	[+0.01, +0.10]	Logs
➖	tcp_dd_logs_filter_exclude	ingress throughput	+0.00	[-0.01, +0.01]	Logs
➖	uds_dogstatsd_to_api	ingress throughput	-0.00	[-0.00, +0.00]	Logs
➖	file_tree	memory utilization	-0.55	[-0.64, -0.45]	Logs

Bounds Checks

perf	experiment	bounds_check_name	replicates_passed
❌	idle	memory_usage	9/10

Explanation

A regression test is an A/B test of target performance in a repeatable rig, where "performance" is measured as "comparison variant minus baseline variant" for an optimization goal (e.g., ingress throughput). Due to intrinsic variability in measuring that goal, we can only estimate its mean value for each experiment; we report uncertainty in that value as a 90.00% confidence interval denoted "Δ mean % CI".

For each experiment, we decide whether a change in performance is a "regression" -- a change worth investigating further -- if all of the following criteria are true:

1. Its estimated |Δ mean %| ≥ 5.00%, indicating the change is big enough to merit a closer look.

2. Its 90.00% confidence interval "Δ mean % CI" does not contain zero, indicating that if our statistical model is accurate, there is at least a 90.00% chance there is a difference in performance between baseline and comparison variants.

3. Its configuration does not mark it "erratic".

[DanielLavie]

/merge

[dd-devflow]

🚂 MergeQueue: waiting for PR to be ready

This merge request is not mergeable yet, because of pending checks/missing approvals. It will be added to the queue as soon as checks pass and/or get approvals.
Note: if you pushed new commits since the last approval, you may need additional approval.
You can remove it from the waiting list with /remove command.

Use /merge -c to cancel this operation!

[dd-devflow]

🚂 MergeQueue: pull request added to the queue

The median merge time in main is 22m.

Use /merge -c to cancel this operation!