Though the object element has no hidden attribute, you can create CSS rules to override the sizing attributes of the object element. Thread names are the strings passed to the base::Thread class at initialization. Tip: You can quickly go deeper into the call tree by holding down your right arrow key. Full-page plug-ins are commonly used for document viewers, such as Adobe Acrobat. A PresShell:Flush means that we are either recomputing styles or recomputing layout. Note that with an object element, param values are also sent in this array after the attributes, separated by a param entry. With more experience you can read profiles faster by recognizing patterns. A full-page plug-in is a visible plug-in that is not part of an HTML page. Note, however, that plug-ins are windowed by default, because windowed plug-ins are in general easier to develop and more stable to use. As we focus on using this tool and add additional sample labels coverage should improve.
The Firefox Profiler is a profiler that is built into Firefox and is available at It has tighter integration with Firefox than external profilers, and has more of a platform focus that the DevTools performance panel.
Profiling Firefox mobileSection.
This can be achieved by additionally setting the layers. Take the survey.
You might need to know which plug-in is configured for a MIME type, for example, to dynamically create an object element on the page if the user has a plug-in configured for the MIME type. Alternatively, you can write plug-ins that do not require a window to draw into.
Use type to specify the media type or MIME type necessary to display the plug-in.
This will provide an accurate callstack for most samples.
The browser user interface remains relatively constant regardless of which type of plug-in is displayed.
Plugin Basics Plugins MDN
In addition to these standard attributes, you can create private, plug-in-specific attributes and use them in the embed attribute to pass extra information between the HTML page and the plug-in code. By convention, all of the plug-in specific functions have the prefix "NPP", and all of the browser-specific functions have the prefix "NPN". These are options to gather additional data in your profiles.
You can see the samples in the Timeline get darker as you select different functions in the Call Tree; these are samples that were taken when the selected function was running. So, for example, though Gecko does not support the classid attribute of the object element - which was used for Java classes and ActiveX plug-ins embedded in pages - object elements can be nested to support different plug-in implementations.
(1) In a new tab, type or paste.
to see a huge list of Firefox preferences.
This will insert a timer query during compositing and show the result in the Frames view. A thread can only be profiled if it is registered to the profiler. Having gotten a profile this way, the layer tree for a composite can be seen by clicking on a composite in the "Frames" section of Cleopatra you may need to a sub-range of samples to make individual composites large enough to be clicked.
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This will sample other threads.