Add benchmark script

benchmark_parallel.rb

@@ -0,0 +1,54 @@
+#!/usr/bin/env ruby
+
+require 'fileutils'
+
+# Test with a small subset
+test_sizes = [1, 2, 4, 8]
+test_model = ARGV[0] || 'moondream:1.8b'
+
+puts "Benchmarking parallelism with model: #{test_model}"
+puts "This will resize some test images and run quick tests"
+puts "=" * 60
+
+# Create test images if needed
+unless Dir.exist?('photo-512')
+  puts "Creating test images..."
+  system('./resize_images.rb')
+end
+
+# Run tests with different parallelism levels
+results = {}
+
+test_sizes.each do |parallel|
+  puts "\nTesting with #{parallel} parallel requests..."
+
+  start_time = Time.now
+
+  # Run with just one prompt and limited images
+  success = system(
+    "./extract_tags.rb -p #{parallel} -m #{test_model} -v"
+    out: File::NULL,
+    err: File::NULL
+  )
+
+  elapsed = Time.now - start_time
+  results[parallel] = elapsed
+
+  puts "  Time: #{elapsed.round(1)}s"
+
+  # Clean up results between runs
+  FileUtils.rm_rf('results')
+end
+
+puts "\n" + "=" * 60
+puts "RESULTS:"
+puts "=" * 60
+
+baseline = results[1]
+results.each do |parallel, time|
+  speedup = baseline / time
+  puts "#{parallel} parallel: #{time.round(1)}s (#{speedup.round(2)}x speedup)"
+end
+
+optimal = results.min_by { |_, time| time }
+puts "\nOptimal parallelism: #{optimal[0]} (#{optimal[1].round(1)}s)"