# template_profiler URL: /api/rendering/template_profiler/ Section: rendering -------------------------------------------------------------------------------- template_profiler - Bengal window.BENGAL_THEME_DEFAULTS = { appearance: 'dark', palette: 'snow-lynx' }; // Progressive Enhancement System Configuration window.Bengal = window.Bengal || {}; window.Bengal.enhanceBaseUrl = '/bengal/assets/js/enhancements'; window.Bengal.watchDom = true; window.Bengal.debug = false; (function () { try { var defaults = window.BENGAL_THEME_DEFAULTS || { appearance: 'system', palette: '' }; var defaultAppearance = defaults.appearance; if (defaultAppearance === 'system') { defaultAppearance = (window.matchMedia && window.matchMedia('(prefers-color-scheme: dark)').matches) ? 'dark' : 'light'; } var storedTheme = localStorage.getItem('bengal-theme'); var storedPalette = localStorage.getItem('bengal-palette'); var theme = storedTheme ? (storedTheme === 'system' ? defaultAppearance : storedTheme) : defaultAppearance; var palette = storedPalette ?? defaults.palette; document.documentElement.setAttribute('data-theme', theme); if (palette) { document.documentElement.setAttribute('data-palette', palette); } } catch (e) { document.documentElement.setAttribute('data-theme', 'light'); } })(); Skip to main content Magnifying Glass ESC Recent Clear Magnifying Glass No results for "" Try different keywords or check your spelling Start typing to search... ↑↓ Navigate ↵ Open ESC Close Powered by Lunr ᓚᘏᗢ Documentation Info About Arrow Clockwise Get Started Note Tutorials File Text Content Palette Theming Settings Building Starburst Extending Bookmark Reference Learning Tracks Releases Dev GitHub API Reference bengal CLI Magnifying Glass Search ⌘K Palette Appearance Chevron Down Mode Monitor System Sun Light Moon Dark Palette Snow Lynx Brown Bengal Silver Bengal Charcoal Bengal Blue Bengal List ᓚᘏᗢ Magnifying Glass Search X Close Documentation Info About Arrow Clockwise Get Started Note Tutorials File Text Content Palette Theming Settings Building Starburst Extending Bookmark Reference Learning Tracks Releases Dev GitHub API Reference bengal CLI Palette Appearance Chevron Down Mode Monitor System Sun Light Moon Dark Palette Snow Lynx Brown Bengal Silver Bengal Charcoal Bengal Blue Bengal API Reference __main__ bengal Caret Right Folder Analysis community_detection graph_analysis graph_reporting graph_visualizer knowledge_graph link_suggestions link_types page_rank path_analysis performance_advisor results Caret Right Folder Assets manifest pipeline Caret Right Folder Autodoc base config docstring_parser utils virtual_orchestrator Caret Right Folder Extractors cli openapi python Caret Right Folder Models cli common openapi python Caret Right Folder Cache asset_dependency_map cache_store cacheable compression dependency_tracker page_discovery_cache query_index query_index_registry taxonomy_index utils Caret Right Folder Build Cache autodoc_tracking core file_tracking fingerprint parsed_content_cache rendered_output_cache taxonomy_index_mixin validation_cache Caret Right Folder Indexes author_index category_index date_range_index section_index Caret Right Folder Cli __main__ base site_templates utils Caret Right Folder Commands assets build clean collections config debug explain fix health init perf project serve site skeleton sources theme utils validate Caret Right Folder Graph __main__ bridges communities orphans pagerank report suggest Caret Right Folder New config presets scaffolds site wizard Caret Right Folder Helpers cli_app_loader cli_output config_validation error_handling menu_config metadata progress site_loader traceback validation Caret Right Folder Skeleton hydrator schema Caret Right Folder Templates base registry Caret Right Folder Blog template Caret Right Folder Changelog template Caret Right Folder Default template Caret Right Folder Docs template Caret Right Folder Landing template Caret Right Folder Portfolio template Caret Right Folder Resume template Caret Right Folder Collections errors loader schemas validator Caret Right Folder Config defaults deprecation directory_loader env_overrides environment feature_mappings hash loader merge origin_tracker validators Caret Right Folder Content Layer entry loaders manager source Caret Right Folder Sources github local notion rest Caret Right Folder Content Types base registry strategies Caret Right Folder Core build_context cascade_engine menu section theme Caret Right Folder Asset asset_core css_transforms Caret Right Folder Page computed content metadata navigation operations page_core proxy relationships utils Caret Right Folder Site core data discovery factories page_caches properties section_registry theme Caret Right Folder Debug base config_inspector content_migrator delta_analyzer dependency_visualizer explainer incremental_debugger models reporter shortcode_sandbox Caret Right Folder Discovery asset_discovery content_discovery Caret Right Folder Fonts downloader generator Caret Right Folder Health autofix base health_check report Caret Right Folder Linkcheck async_checker ignore_policy internal_checker models orchestrator Caret Right Folder Validators anchors assets cache config connectivity cross_ref fonts links menu navigation output performance rendering rss sitemap taxonomy tracks Caret Right Folder Directives analysis checkers constants Caret Right Folder Orchestration asset content full_to_incremental incremental menu postprocess related_posts render section static streaming taxonomy Caret Right Folder Postprocess html_output redirects rss sitemap special_pages Caret Right Folder Output Formats index_generator json_generator llm_generator lunr_index_generator txt_generator utils Caret Right Folder Rendering api_doc_enhancer asset_extractor errors jinja_utils link_transformer link_validator pygments_cache renderer template_context template_profiler validator Caret Right Folder Parsers base factory mistune native_html pygments_patch python_markdown Caret Right Folder Pipeline core output thread_local toc transforms Caret Right Folder Plugins badges cross_references inline_icon term variable_substitution Caret Right Folder Directives _icons admonitions badge base button cache cards checklist code_tabs container contracts data_table dropdown embed errors example_label fenced figure glossary icon include list_table literalinclude marimo navigation options rubric steps tabs target term terminal tokens utils validator video Caret Right Folder Template Engine asset_url core environment manifest menu url_helpers Caret Right Folder Template Functions advanced_collections advanced_strings autodoc collections content crossref data dates debug files get_page i18n icons images math_functions navigation pagination_helpers seo strings tables taxonomies theme urls Caret Right Folder Server build_handler component_preview constants dev_server live_reload pid_manager reload_controller request_handler request_logger resource_manager utils Caret Right Folder Services validation Caret Right Folder Themes config Caret Right Folder Utils atomic_write autodoc build_context build_stats build_summary cli_output css_minifier dates dotdict error_handlers file_io file_lock hashing incremental_constants js_bundler live_progress logger metadata observability page_initializer pagination path_resolver paths performance_collector performance_report profile progress retry rich_console sections swizzle text theme_registry theme_resolution thread_local traceback_config traceback_renderer url_normalization url_strategy API Reference Rendering ᗢ Caret Down Link Copy URL External Open LLM text Copy Copy LLM text Share with AI Ask Claude Ask ChatGPT Ask Gemini Ask Copilot Module rendering.template_profiler Template profiling infrastructure for Bengal SSG. Provides timing instrumentation for template rendering to identify performance bottlenecks and optimize template code. Usage: # Enable via CLI bengal build --profile-templates # Access report report = template_engine.get_template_profile() Architecture: TemplateProfiler collects timing data for: Individual template renders (base.html, partials/*.html) Template function calls (get_menu_lang, get_auto_nav, etc.) Include/extends resolution Data is thread-safe and aggregated across parallel renders. See Also: plan/active/rfc-template-performance-optimization.md bengal/rendering/template_engine/core.py View source 4 Classes 5 Functions Classes TemplateTimings dataclass Timing statistics for a single template. 5 Caret Right Timing statistics for a single template. Attributes Name Type Description name str render_times list[float] Methods 5 Tag count property Number of times template was rendered. int Caret Right def count(self) -> int Number of times template was rendered. Returns int Tag total_ms property Total render time in milliseconds. float Caret Right def total_ms(self) -> float Total render time in milliseconds. Returns float Tag avg_ms property Average render time in milliseconds. float Caret Right def avg_ms(self) -> float Average render time in milliseconds. Returns float Tag min_ms property Minimum render time in milliseconds. float Caret Right def min_ms(self) -> float Minimum render time in milliseconds. Returns float Tag max_ms property Maximum render time in milliseconds. float Caret Right def max_ms(self) -> float Maximum render time in milliseconds. Returns float FunctionTimings dataclass Timing statistics for a template function. 3 Caret Right Timing statistics for a template function. Attributes Name Type Description name str call_times list[float] Methods 3 Tag count property Number of times function was called. int Caret Right def count(self) -> int Number of times function was called. Returns int Tag total_ms property Total execution time in milliseconds. float Caret Right def total_ms(self) -> float Total execution time in milliseconds. Returns float Tag avg_ms property Average execution time in milliseconds. float Caret Right def avg_ms(self) -> float Average execution time in milliseconds. Returns float TemplateProfiler Collects and reports template rendering performance data. Thread-safe implementation supports para… 9 Caret Right Collects and reports template rendering performance data. Thread-safe implementation supports parallel builds. Methods 8 enable Enable profiling. 0 None Caret Right def enable(self) -> None Enable profiling. disable Disable profiling. 0 None Caret Right def disable(self) -> None Disable profiling. is_enabled Check if profiling is enabled. 0 bool Caret Right def is_enabled(self) -> bool Check if profiling is enabled. Returns bool start_template Mark start of template render. 1 None Caret Right def start_template(self, template_name: str) -> None Mark start of template render. Parameters 1 template_name str Name of template being rendered end_template Mark end of template render and record timing. 1 None Caret Right def end_template(self, template_name: str) -> None Mark end of template render and record timing. Parameters 1 template_name str Name of template that finished rendering record_function_call Record a template function call timing. 2 None Caret Right def record_function_call(self, func_name: str, duration: float) -> None Record a template function call timing. Parameters 2 func_name str Name of the function duration float Execution time in seconds get_report Generate profiling report. 0 dict[str, Any] Caret Right def get_report(self) -> dict[str, Any] Generate profiling report. Returns dict[str, Any] — Dictionary with template and function timing statistics reset Clear all collected timing data. 0 None Caret Right def reset(self) -> None Clear all collected timing data. Internal Methods 1 Caret Right __init__ Initialize the profiler. 0 None Caret Right def __init__(self) -> None Initialize the profiler. ProfiledTemplate Wrapper around Jinja2 Template that adds render timing. Delegates all attribute access to the wrap… 3 Caret Right Wrapper around Jinja2 Template that adds render timing. Delegates all attribute access to the wrapped template while intercepting render() calls for profiling. Methods 1 render Render template with timing instrumentation. 0 str Caret Right def render(self, *args: Any, **kwargs: Any) -> str Render template with timing instrumentation. Returns str — Rendered template string Internal Methods 2 Caret Right __init__ Initialize the profiled template. 2 None Caret Right def __init__(self, template: Template, profiler: TemplateProfiler) -> None Initialize the profiled template. Parameters 2 template Template Jinja2 Template to wrap profiler TemplateProfiler TemplateProfiler for recording timings __getattr__ Delegate attribute access to wrapped template. 1 Any Caret Right def __getattr__(self, name: str) -> Any Delegate attribute access to wrapped template. Parameters 1 name str Returns Any Functions profile_function Decorator factory for profiling template functions. 2 Callable[[Callable[… Caret Right def profile_function(profiler: TemplateProfiler, func_name: str) -> Callable[[Callable[P, R]], Callable[P, R]] Decorator factory for profiling template functions. Parameters 2 Name Type Default Description profiler TemplateProfiler — TemplateProfiler instance func_name str — Name to record for this function Returns Callable[[Callable[P, R]], Callable[P, R]] — Decorator that wraps function with timing format_profile_report Format profiling report for CLI output. 2 str Caret Right def format_profile_report(report: dict[str, Any], top_n: int = 20) -> str Format profiling report for CLI output. Parameters 2 Name Type Default Description report dict[str, Any] — Profiling report from TemplateProfiler.get_report() top_n int 20 Number of top items to show per category Returns str — Formatted report string for display get_profiler Get the global template profiler instance. 0 TemplateProfiler | None Caret Right def get_profiler() -> TemplateProfiler | None Get the global template profiler instance. Returns TemplateProfiler | None enable_profiling Enable template profiling globally. 0 TemplateProfiler Caret Right def enable_profiling() -> TemplateProfiler Enable template profiling globally. Returns TemplateProfiler — The global TemplateProfiler instance disable_profiling Disable template profiling globally. 0 None Caret Right def disable_profiling() -> None Disable template profiling globally. ← Previous template_context Next → validator List © 2025 Bengal ᓚᘏᗢ window.BENGAL_LAZY_ASSETS = { tabulator: '/bengal/assets/js/tabulator.min.js', dataTable: '/bengal/assets/js/data-table.js', mermaidToolbar: '/bengal/assets/js/mermaid-toolbar.9de5abba.js', mermaidTheme: '/bengal/assets/js/mermaid-theme.344822c5.js', graphMinimap: '/bengal/assets/js/graph-minimap.cc7e42e3.js', graphContextual: '/bengal/assets/js/graph-contextual.440e59c6.js' }; window.BENGAL_ICONS = { close: '/bengal/assets/icons/close.911d4fe1.svg', enlarge: '/bengal/assets/icons/enlarge.652035e5.svg', copy: '/bengal/assets/icons/copy.3d56e945.svg', 'download-svg': '/bengal/assets/icons/download.04f07e1b.svg', 'download-png': '/bengal/assets/icons/image.c34dfd40.svg', 'zoom-in': '/bengal/assets/icons/zoom-in.237b4a83.svg', 'zoom-out': '/bengal/assets/icons/zoom-out.38857c77.svg', reset: '/bengal/assets/icons/reset.d26dba29.svg' }; Arrow Up X -------------------------------------------------------------------------------- Metadata: - Author: lbliii - Word Count: 1806 - Reading Time: 9 minutes