Slow rendering

[ferderer]

Is anybody else experiencing slow rendering of precompiled templates? I'm getting 70-100 ms for an average-sized template. I'm pretty sure, I've got single digits times with JTE 2.3.0.

My config: JTE 3.0.3-3.1.12 (doesn't make any difference), Java 21, Spring Boot 3.3.2.

    @Bean
    public TemplateEngine templateEngine() {
        if (jteProperties.isPrecompiled()) {
            log.info("Initializing precompiled JTE TemplateEngine");
            return TemplateEngine.createPrecompiled(ContentType.Html);
        }
        else {
            log.info("Initializing hot reloading JTE TemplateEngine");

            TemplateEngine engine = TemplateEngine.create(new DirectoryCodeResolver(Path.of(jteProperties.getSources())),
                Path.of(jteProperties.getTarget()), ContentType.Html, getClass().getClassLoader());
            engine.setBinaryStaticContent(true);
            return engine;
        }
    }

    @Override
    public void render(Map<String, ?> m, HttpServletRequest request, HttpServletResponse response) throws Exception {
        Map<String, Object> model = new HashMap<>(m);
        model.put("page", page.request(request));

        response.setContentType(MediaType.TEXT_HTML_VALUE);
        response.setCharacterEncoding(StandardCharsets.UTF_8.name());
        templateEngine.render(viewname, model, new PrintWriterOutput(response.getWriter()));
    }

Nothing fancy, really.

[kelunik]

If reporting performance problems, please attach a flame chart or similar using a profiler such as JFR or Async Profiler.