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[perf-scan] 2026-10-23 -- performance opportunities found

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Assessment

Difficulty
2/5
Estimated time
1-3 hours
Newbie friendliness
70/100
Issue type
Refactor
Clarity
Clearly specified
Activity status
Active
Tech stack
git, python
Domain
cli, performance

Research direction

Read src/apm_cli/commands/update.py around the import at line 62 and its exception handler around line 178, then inspect src/apm_cli/commands/marketplace/plugin/__init__.py around lines 10 and 69. Move each import into the function that uses it, and check that other CLI commands no longer load GitPython or PyYAML at startup while both affected commands still handle their exceptions.

Written by the indexing model from the issue text.

Description

type/automation type/performance

Performance Scan - 2026-10-23

Automated scan of src/apm_cli/ for algorithmic performance anti-patterns.
2 finding(s) identified (both low-priority, startup latency only).

Findings
[E] Heavy top-level imports -- src/apm_cli/commands/update.py:62
  • Current: from git.exc import GitCommandError at module level imports GitPython on every CLI invocation, even when apm update is not run.
  • Proposed: import deferred until the command runs (O(0) startup cost for other commands).
  • Fix: Move the import into the function containing the except (GitCommandError, OSError) clause (around line 178).
[E] Heavy top-level imports -- src/apm_cli/commands/marketplace/plugin/init.py:10
  • Current: import yaml at module level; used only in one except (OSError, yaml.YAMLError) helper (around line 69).
  • Proposed: local import inside that helper.
  • Fix: Move import yaml into the function that parses the YAML.
Scan coverage
  • src/apm_cli/ (507 files scanned)
  • Patterns checked: A (quadratic loops), B (linear scan in loop),
    C (unconditional expensive ops), D (redundant config parsing),
    E (heavy top-level imports), F (sequential independent I/O)
  • Patterns A-D and F: sampled the highest-density files; no confirmed findings.

Generated by Daily Performance Scanner · copilot · auto · 18 AIC · ⌖ 0.561 AIC · ⊞ 11.1K · ◷

  • expires on Oct 30, 2026, 1:34 AM UTC
Dominant language
Python
Stars
4k
Forks
393
Avg merge
3d 2h
Merged PRs (30d)
102

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