Why does using bundles in MVC cause increased memory usage

Question

We have updated various sites to version MCV4 and simultaneously we exploited the ability to create Bundle with dll System.Web.Optimization. Everything works.

However, we have the following problem: when javascript is called the bundle of the application allocates about 50 MB RAM, without releasing it. The javascript included in the bundle have are in total about 2 Mb.

Note: We create Bundles in global asax, the event "Application_Start"

   protected virtual void Application_Start()
        {

        AreaRegistration.RegisterAllAreas();

        RegisterGlobalFilters(GlobalFilters.Filters);
        RegisterBundles(BundleTable.Bundles);
        RegisterRoutes(RouteTable.Routes);
    }



 protected virtual void RegisterBundles(BundleCollection bundles)
        {
        bundles.Add(new StyleBundle("~/content/all.css").Include(
                    "~/content/site.css"
                    ));

        bundles.Add(new StyleBundle("~/content/themes/base/base.all.css").Include(
                    "~/Content/themes/base/jquery-ui-1.8.23.custom.css",
                    "~/content/themes/base/kendo.common.css",
                    "~/content/themes/base/kendo.totalcom.css",
                    "~/Content/themes/base/jquery.contextmenu.css",
                    "~/content/themes/base/tipsy.css",
                    "~/content/themes/base/jquery.ibutton.css"
                    ));

        bundles.Add(new ScriptBundle("~/Scripts/all.js").Include(
                "~/Scripts/jquery-1.8.2.js",
                "~/Scripts/modernizr-1.7.js",
                "~/Scripts/jquery-ui-1.8.22.custom.js",
                "~/Scripts/jquery.validate.js",
                "~/Scripts/jquery.validate.unobtrusive.js",
                "~/Scripts/jquery.unobtrusive-ajax.js",
                "~/Scripts/conditional-validation.js",
                "~/Scripts/fileuploader.js",
                "~/Content/tiny_mce/jquery.tinymce.js",
                "~/Scripts/kendo.all.js",
                "~/Scripts/kendo.aspnetmvc.js",
                "~/Scripts/jquery.contextmenu.js",
                "~/Scripts/jquery.tipsy.js",
                "~/Scripts/jquery.checkradio.js",
                "~/Scripts/jquery.metadata.js",
                "~/Scripts/jquery.ibutton.js",
                "~/Scripts/jquery.easing.js",
                "~/Scripts/functions.js",
                "~/Scripts/Erp.js",
                "~/Scripts/Cms.js"
            ));
    }

The bundles are called in the masterpage

<%: Styles.Render("~/Content/all.css") %>
<%: Styles.Render("~/content/themes/base/base.all.css") %>
<%: Scripts.Render("~/Scripts/all.js") %>

EDIT: when the following line is executed an extra 50mb memory is used

<%:
Scripts.Render("~/Scripts/all.js")
 %>

Has anyone else has run into this problem? Any suggestions to reduce this memory consumption?

Answer 1

I recently had to deal with Bundles adding 200MB+ of memory to my IIS process when serving kendo.all.js (which is a staggering 5MB; the minified version is around 2MB), which is ridiculous. I plan on breaking that kendo file into several bundles and eliminating the controls I don't want, but I wanted to deal with that later.

In my case, I have both unminified and minified versions of the assets from the vendor. I don't need Bundles to minify anything. All I need it to do is emit the direct links to the unminified scripts when debug="true" and emit a link to the bundle of concatenated but preminified scripts when debug="false".

In my BundleConfig.cs, I had been using a ScriptBundle for my vendor files, which will attempt to minify, resulting in the cocked hat I've already mentioned. Using just plain old Bundle gives me the functionality I need without attempting to minify, and saving me a lot of memory. Sod off, ScriptBundle!