FIX: stabilize release builds on macOS and ARM64 Linux

[Gaurav Sharma (bewithgaurav)]

AB#49327

Summary

Ports the two reviewed ADO release-pipeline fixes to GitHub for repository parity.

• Align macOS release setup with PR validation: install CMake, Docker, and Colima in one Homebrew transaction without brew update, then start Colima separately.
• Remove the unavailable qemu fallback and fixed startup sleep from the macOS release job.
• Increase Linux release jobs from 120 to 180 minutes for six serial Python build/test cycles.
• Remove each completed isolated test directory to reduce disk accumulation.

Evidence

• ADO build 182211 repeatedly timed out while installing and starting Colima across the macOS matrix.
• ADO build 182234 completed Python 3.10-3.14 on both ARM64 Linux distributions, then exceeded the 120-minute job limit during Python 3.15.
• The corresponding ADO fixes were reviewed in PRs 8581 and 8583.

Validation

• Parsed both YAML templates with PyYAML.
• Ran bash -n against every modified shell block.
• Verified exact resulting blob parity with ADO commits 0e67e89 and d4f84fe.
• git diff --check passed.

[github-actions]

PR Performance Report

✅ No regression detected

No consistent slowdowns detected across all 2 environments.

0 IMPROVEMENTS 0 SLOWDOWNS 2/2 ENVIRONMENTS

Coverage: 2 of 2 environments completed. Advisory result; does not block merging.

Performance diagnostics

Phase times are inclusive diagnostics and must not be added together. They identify where measured time changed, not why it changed.

No affected phases or call-count changes were recorded.

All database tasks and timings

Unix / SQL Server 2022

Database task	Before	After	Paired change	Result
Connection opening	10.582 ms	10.246 ms	-1.5%	no signal
SELECT queries	1.076 ms	1.112 ms	+1.1%	no signal
Row insertion	35.818 ms	34.841 ms	-2.8%	no signal
Executemany inserts	156.731 ms	158.267 ms	-0.3%	no signal
Fetch-all queries	120.261 ms	122.799 ms	+1.7%	no signal
Row-by-row fetching	14.234 ms	14.197 ms	+0.1%	no signal
Batched row fetching	116.135 ms	117.697 ms	+0.2%	no signal
Transaction commit and rollback	114.481 ms	114.605 ms	-0.6%	no signal
Arrow row fetching	93.804 ms	95.081 ms	+1.4%	no signal
100,000-row insertion	439.170 ms	456.059 ms	+3.4%	no signal
Row fetching in batches of 100	121.445 ms	121.551 ms	+0.1%	no signal
Row fetching in batches of 10,000	143.220 ms	141.186 ms	+6.3%	no signal
Repeated positional queries	33.780 ms	34.644 ms	+0.9%	no signal
Repeated named-parameter queries	35.796 ms	37.388 ms	+1.5%	no signal
Legacy 100,000-row insertion	350.479 ms	354.477 ms	+0.4%	no signal
Insertion with explicit input sizes	490.741 ms	490.898 ms	+1.2%	no signal
Joined aggregation queries	177.523 ms	176.727 ms	-0.5%	no signal
Large joined-result fetching	181.672 ms	184.014 ms	+2.0%	no signal
1.2-million-row fetching	3471.308 ms	3501.300 ms	+1.2%	no signal
Common table expression queries	5.310 ms	5.316 ms	+0.7%	no signal
256 KiB VARCHAR(MAX) / fetchall()	1.241 ms	1.312 ms	+5.7%	no signal
10,000 scalar values / fetchval() (debug disabled)	106.066 ms	106.556 ms	+0.7%	no signal

Unix / SQL Server 2025

Database task	Before	After	Paired change	Result
Connection opening	97.939 ms	97.576 ms	-0.4%	no signal
SELECT queries	1.072 ms	1.207 ms	+11.2%	no signal
Row insertion	34.603 ms	34.650 ms	-1.3%	no signal
Executemany inserts	152.431 ms	153.437 ms	+0.2%	no signal
Fetch-all queries	122.446 ms	123.254 ms	+0.7%	no signal
Row-by-row fetching	15.296 ms	14.650 ms	-6.1%	no signal
Batched row fetching	118.746 ms	118.037 ms	-1.2%	no signal
Transaction commit and rollback	115.069 ms	114.278 ms	-0.6%	no signal
Arrow row fetching	96.100 ms	95.243 ms	-0.8%	no signal
100,000-row insertion	474.559 ms	430.836 ms	-6.5%	no signal
Row fetching in batches of 100	122.866 ms	122.489 ms	-0.2%	no signal
Row fetching in batches of 10,000	141.729 ms	134.745 ms	-6.1%	no signal
Repeated positional queries	33.718 ms	33.303 ms	-0.0%	no signal
Repeated named-parameter queries	36.470 ms	35.577 ms	-1.0%	no signal
Legacy 100,000-row insertion	353.420 ms	356.789 ms	+1.4%	no signal
Insertion with explicit input sizes	513.008 ms	491.098 ms	-4.4%	no signal
Joined aggregation queries	161.828 ms	159.599 ms	-0.9%	no signal
Large joined-result fetching	188.085 ms	190.503 ms	+5.2%	no signal
1.2-million-row fetching	3561.124 ms	3558.315 ms	-0.0%	no signal
Common table expression queries	5.302 ms	5.258 ms	-1.3%	no signal
256 KiB VARCHAR(MAX) / fetchall()	1.525 ms	1.548 ms	+1.2%	no signal
10,000 scalar values / fetchval() (debug disabled)	110.283 ms	108.775 ms	-1.0%	no signal

Build and measurement details

ADO build 182292

PR head: 22cd57aef9ba3473325a7cfa8a55225ca754e901
Base: acdb42cfd39c9c59824272170286ca9bb1220052
Measured merge: 96ccce44c2af949e1dedffba045245a692a81121

• Unix / SQL Server 2022: Python 3.12.3, x86_64, SQL 16.0.4295.3; 5 paired comparisons and 1 warmup.
• Unix / SQL Server 2025: Python 3.12.3, x86_64, SQL 17.0.5005.3; 5 paired comparisons and 1 warmup.

A consistent change requires more than 20% median paired movement, at least 1 ms between the median runtimes, and at least 80% of pairs exceeding the relative threshold in the same direction. A slowdown without enough pair agreement is reported as inconsistent.

The displayed change is the median of paired before-and-after ratios. It is not recalculated from the two displayed median runtimes.

Both revisions use profiling-enabled builds on the same agent and database, with alternating order and discarded warmups. Results are diagnostic and do not represent production-wheel latency.

Raw samples and logs are attached to the ADO run as profiler-* artifacts.

[github-actions]

📊 Code Coverage Report

🔥 Diff Coverage 100%

🎯 Overall Coverage 85%

📈 Total Lines Covered: 9443 out of 11092 📁 Project: mssql-python

---

Diff Coverage

Diff: main...HEAD, staged and unstaged changes

No lines with coverage information in this diff.

---

📋 Files Needing Attention

📉 Files with overall lowest coverage (click to expand)

mssql_python.pybind.performance_counter.hpp: 0.7%
mssql_python.pybind.logger_bridge.cpp: 57.9%
mssql_python.pybind.ddbc_bindings.h: 62.6%
mssql_python.pybind.logger_bridge.hpp: 70.8%
mssql_python.pybind.connection.connection_pool.cpp: 82.3%
mssql_python.pybind.connection.connection.cpp: 83.1%
mssql_python.logging.py: 86.2%
mssql_python.pooling.py: 90.1%
mssql_python.pybind.fetch_temporal.hpp: 92.1%
mssql_python.cursor.py: 92.5%

---

🔗 Quick Links

⚙️ Build Summary	📋 Coverage Details
View Azure DevOps Build	Browse Full Coverage Report

[Copilot]

🟢 Approval recommended

The focused pipeline changes are consistent with existing validation behavior and introduce no unresolved issues.

0 open findings

What changed in this PR

Stabilizes release builds by aligning macOS setup with PR validation and accommodating slower ARM64 Linux builds.

Changes:

• Consolidates macOS Homebrew installation and simplifies Colima startup.
• Extends Linux job timeouts and removes completed test directories.

File	Description
OneBranchPipelines/​stages/​build-macos-single-stage.yml	Streamlines Homebrew and Colima setup.
OneBranchPipelines/​stages/​build-linux-single-stage.yml	Extends timeout and reduces test-directory accumulation.

🧠 Review effort: Balanced

---

💡 Configure MCP servers for context-aware, tailored reviews. Learn more in the docs.