Changelog updates for 7.59.1 release

[kacper-murzyn]

Agent 7.59.1 release changelog.

[agent-platform-auto-pr]

[Fast Unit Tests Report]

On pipeline 50258965 (CI Visibility). The following jobs did not run any unit tests:

Jobs:

• tests_deb-arm64-py3
• tests_deb-x64-py3
• tests_flavor_dogstatsd_deb-x64
• tests_flavor_heroku_deb-x64
• tests_flavor_iot_deb-x64
• tests_rpm-arm64-py3
• tests_rpm-x64-py3
• tests_windows-x64

If you modified Go files and expected unit tests to run in these jobs, please double check the job logs. If you think tests should have been executed reach out to #agent-devx-help

[cit-pr-commenter]

Regression Detector

Regression Detector Results

Metrics dashboard
Target profiles
Run ID: 5b1c6164-0e8c-4d63-aa8c-31be5e438a5f

Baseline: 3638fcd
Comparison: e4052a3
Diff

Optimization Goals: ❌ Significant changes detected

perf	experiment	goal	Δ mean %	Δ mean % CI	trials	links
✅	basic_py_check	% cpu utilization	-5.66	[-9.35, -1.97]	1	Logs

Fine details of change detection per experiment

perf	experiment	goal	Δ mean %	Δ mean % CI	trials	links
➖	tcp_syslog_to_blackhole	ingress throughput	+0.62	[+0.56, +0.68]	1	Logs
➖	idle	memory utilization	+0.31	[+0.27, +0.35]	1	Logs
➖	uds_dogstatsd_to_api_cpu	% cpu utilization	+0.16	[-0.58, +0.90]	1	Logs
➖	file_tree	memory utilization	+0.06	[-0.05, +0.17]	1	Logs
➖	otel_to_otel_logs	ingress throughput	+0.05	[-0.76, +0.85]	1	Logs
➖	tcp_dd_logs_filter_exclude	ingress throughput	+0.00	[-0.01, +0.01]	1	Logs
➖	uds_dogstatsd_to_api	ingress throughput	-0.01	[-0.11, +0.10]	1	Logs
➖	idle_all_features	memory utilization	-0.33	[-0.42, -0.25]	1	Logs
➖	pycheck_lots_of_tags	% cpu utilization	-1.09	[-4.52, +2.34]	1	Logs
✅	basic_py_check	% cpu utilization	-5.66	[-9.35, -1.97]	1	Logs

Bounds Checks: ✅ Passed

perf	experiment	bounds_check_name	replicates_passed	links
✅	idle	memory_usage	10/10

Explanation

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

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

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".