name: Performance regression
description: Report a slowdown or performance issue
title: '[PERF] '
labels: [performance, regression]
body:
  - type: markdown
    attributes:
      value: |
        Thanks for reporting a performance issue! Performance regressions are taken seriously.

  - type: textarea
    id: description
    attributes:
      label: Performance issue description
      description: A clear and concise description of the performance problem.
      placeholder: Processing time has increased significantly since version X...
    validations:
      required: true

  - type: input
    id: version_before
    attributes:
      label: Version before regression
      description: The last version where performance was acceptable.
      placeholder: 0.5.0
    validations:
      required: true

  - type: input
    id: version_after
    attributes:
      label: Version with regression
      description: The version where performance degraded.
      placeholder: 0.6.0
    validations:
      required: true

  - type: textarea
    id: baseline_performance
    attributes:
      label: Baseline performance (before)
      description: Processing time, memory usage, etc. with the older version.
      placeholder: |
        - Processing time: 2.5 seconds for a 100-page PDF
        - Memory usage: 150 MB peak
    validations:
      required: true

  - type: textarea
    id: regression_performance
    attributes:
      label: Regression performance (after)
      description: Processing time, memory usage, etc. with the newer version.
      placeholder: |
        - Processing time: 8 seconds for the same PDF
        - Memory usage: 600 MB peak
    validations:
      required: true

  - type: textarea
    id: test_case
    attributes:
      label: Test case
      description: Please provide the PDF file, command used, and benchmark results.
      placeholder: |
        PDF file: (attach or link to a representative file)

        Command:
        ```bash
        pdftract extract input.pdf
        ```

        Benchmark results (using hyperfine or similar):
        ```text
        Benchmark 1: pdftract old_version
          Time (mean ± σ):      2.542 s ±  0.123 s    [User: 2.1 s, System: 0.4 s]
          Range (min … max):    2.3 s …  2.9 s
        ```
    validations:
      required: true

  - type: textarea
    id: profiling_data
    attributes:
      label: Profiling data (optional but helpful)
      description: If available, attach profiling output (flamegraph, perf, Instruments).
      placeholder: |
        # Flamegraph (Linux)
        cargo install flamegraph
        cargo flamegraph --bin pdftract -- <args>

        # perf (Linux)
        perf record -g cargo run --release -- <args>
        perf report
    validations:
      required: false

  - type: input
    id: os
    attributes:
      label: Operating system
      description: e.g., Ubuntu 22.04, macOS 14, Windows 11
      placeholder: Ubuntu 22.04
    validations:
      required: true

  - type: input
    id: hardware
    attributes:
      label: Hardware specification
      description: CPU and RAM are most relevant for performance issues.
      placeholder: Intel i7-12700K, 32 GB RAM
    validations:
      required: true

  - type: textarea
    id: suspected_cause
    attributes:
      label: Suspected cause
      description: If you have a hypothesis about what's causing the regression (e.g., a specific commit, a new dependency), please describe it here.
      placeholder: |
        I suspect commit abc123 which changed the encoding resolution algorithm...
    validations:
      required: false

  - type: textarea
    id: additional_context
    attributes:
      label: Additional context
      description: Add any other context, related issues, or workarounds here.
      placeholder: |
        - Related issue: #456
        - Workaround: Using version 0.5.0 avoids the problem
    validations:
      required: false

  - type: checkboxes
    id: terms
    attributes:
      label: Code of Conduct
      description: By submitting this issue, you agree to follow our Code of Conduct
      options:
        - label: I agree to follow the Code of Conduct
          required: true