Module: Sperf::Text

Defined in:

lib/sperf.rb

Overview

Text report encoder — human/AI readable flat + cumulative top-N table.

Class Method Summary

• .encode(data, top_n: 50) ⇒ Object
• .format_table(title, table, total_weight, top_n) ⇒ Object

Class Method Details

.encode(data, top_n: 50) ⇒ Object

# File 'lib/sperf.rb', line 374

def encode(data, top_n: 50)
  samples_raw = data[:samples]
  mode = data[:mode] || :cpu
  frequency = data[:frequency] || 0

  return "No samples recorded.\n" if !samples_raw || samples_raw.empty?

  flat = Hash.new(0)
  cum = Hash.new(0)
  total_weight = 0

  samples_raw.each do |frames, weight|
    total_weight += weight
    seen = {}

    frames.each_with_index do |frame, i|
      path, label = frame
      key = [label, path]
      flat[key] += weight if i == 0

      unless seen[key]
        cum[key] += weight
        seen[key] = true
      end
    end
  end

  out = String.new
  total_ms = total_weight / 1_000_000.0
  out << "Total: #{"%.1f" % total_ms}ms (#{mode})\n"
  out << "Samples: #{samples_raw.size}, Frequency: #{frequency}Hz\n"
  out << "\n"
  out << format_table("Flat", flat, total_weight, top_n)
  out << "\n"
  out << format_table("Cumulative", cum, total_weight, top_n)
  out
end

.format_table(title, table, total_weight, top_n) ⇒ Object

# File 'lib/sperf.rb', line 412

def format_table(title, table, total_weight, top_n)
  sorted = table.sort_by { |_, w| -w }.first(top_n)
  out = String.new
  out << "#{title}:\n"
  sorted.each do |key, weight|
    label, path = key
    ms = weight / 1_000_000.0
    pct = total_weight > 0 ? weight * 100.0 / total_weight : 0.0
    loc = path.empty? ? "" : " (#{path})"
    out << ("  %8.1fms %5.1f%%  %s%s\n" % [ms, pct, label, loc])
  end
  out
end