Adding mention on the perf script of the apple m3 max

Author: FranciscoThiesen

cppcon2025/images/generate_perf_charts.py

@@ -0,0 +1,91 @@
+import matplotlib.pyplot as plt
+
+# Chart 1: Current landscape (without simdjson)
+libraries_landscape = ["nlohmann::json", "RapidJSON", "Serde (Rust)", "yyjson"]
+speeds_landscape = [242, 497, 1343, 2074]
+colors_landscape = ['#8B8680', '#6495ED', '#FF6F61', '#2ECC71']
+
+plt.figure(figsize=(10, 6))
+bars = plt.bar(libraries_landscape, speeds_landscape, color=colors_landscape, edgecolor='black')
+
+ax = plt.gca()
+ax.spines['top'].set_visible(False)
+ax.spines['right'].set_visible(False)
+
+for bar in bars:
+    yval = bar.get_height()
+    plt.text(bar.get_x() + bar.get_width()/2, yval + 50, f'{int(yval)} MB/s',
+             ha='center', va='bottom', fontsize=12)
+
+plt.ylabel('Throughput (MB/s)', fontsize=14)
+plt.ylim(0, 2500)
+plt.title('Current JSON Serialization Landscape', fontsize=16)
+plt.text(0.99, 0.01, 'Apple Silicon (M3 MAX)', transform=ax.transAxes,
+         fontsize=10, ha='right', va='bottom', style='italic', color='gray')
+plt.tight_layout()
+plt.savefig('perf_landscape.png', dpi=300, bbox_inches='tight')
+plt.close()
+
+# Chart 2: With simdjson reveal
+libraries_with = ["nlohmann::json", "RapidJSON", "Serde (Rust)", "yyjson", "simdjson"]
+speeds_with = [242, 497, 1343, 2074, 3435]
+colors_with = ['#8B8680', '#6495ED', '#FF6F61', '#2ECC71', '#FFD700']
+
+plt.figure(figsize=(10, 6))
+bars = plt.bar(libraries_with, speeds_with, color=colors_with, edgecolor='black')
+
+ax = plt.gca()
+ax.spines['top'].set_visible(False)
+ax.spines['right'].set_visible(False)
+
+for i, bar in enumerate(bars):
+    yval = bar.get_height()
+    label = f'{yval} MB/s ⭐' if libraries_with[i] == 'simdjson' else f'{yval} MB/s'
+    plt.text(bar.get_x() + bar.get_width()/2, yval + 50, label,
+             ha='center', va='bottom', fontsize=12)
+
+# Highlight simdjson
+bars[-1].set_linewidth(3)
+bars[-1].set_edgecolor('#FF0000')
+
+plt.ylabel('Throughput (MB/s)', fontsize=14)
+plt.ylim(0, 4000)
+plt.title('JSON Serialization Performance', fontsize=16)
+plt.text(0.99, 0.01, 'Apple Silicon (M3 MAX)', transform=ax.transAxes,
+         fontsize=10, ha='right', va='bottom', style='italic', color='gray')
+plt.tight_layout()
+plt.savefig('perf_with_simdjson.png', dpi=300, bbox_inches='tight')
+plt.close()
+
+# Chart 3: Final comparison (sorted)
+libraries_sorted = ["simdjson", "yyjson", "Serde (Rust)", "RapidJSON", "nlohmann::json"]
+speeds_sorted = [3435, 2074, 1343, 497, 242]
+colors_sorted = ['#FFD700', '#2ECC71', '#FF6F61', '#6495ED', '#8B8680']
+
+plt.figure(figsize=(10, 6))
+bars = plt.bar(libraries_sorted, speeds_sorted, color=colors_sorted, edgecolor='black')
+
+ax = plt.gca()
+ax.spines['top'].set_visible(False)
+ax.spines['right'].set_visible(False)
+
+for i, bar in enumerate(bars):
+    yval = bar.get_height()
+    label = f'{yval} MB/s ⭐' if libraries_sorted[i] == 'simdjson' else f'{yval} MB/s'
+    plt.text(bar.get_x() + bar.get_width()/2, yval + 50, label,
+             ha='center', va='bottom', fontsize=12)
+
+# Highlight simdjson
+bars[0].set_linewidth(3)
+bars[0].set_edgecolor('#FF0000')
+
+plt.ylabel('Throughput (MB/s)', fontsize=14)
+plt.ylim(0, 4000)
+plt.title('Twitter Dataset (631KB) - Serialization Performance', fontsize=16)
+plt.text(0.99, 0.01, 'Apple Silicon (M3 MAX)', transform=ax.transAxes,
+         fontsize=10, ha='right', va='bottom', style='italic', color='gray')
+plt.tight_layout()
+plt.savefig('perf_comparison.png', dpi=300, bbox_inches='tight')
+plt.close()
+
+print("Performance charts generated successfully!")