Edward, I have done as you said, scanning and updating the registry is really "cost-time", after removing it by hard code, it saves much time. But I wonder whether all object initialization in gst_init are all necessary, I think it will be better if gstreamer can provide more options to disable/enable features, so that user can reduce unnecessary modules easily. Best Regards Zhao Liang -----Original Message----- From: gstreamer-embedded-bounces at lists.sourceforge.net [mailto:gstreamer-embedded-bounces at lists.sourceforge.net] On Behalf Of Edward Hervey Sent: Friday, February 29, 2008 4:35 AM To: Wouter Cloetens Cc: gstreamer-embedded at lists.sourceforge.net Subject: Re: How to reduce gstreamer librarysize & startuptime Hi, On Thu, 2008-02-28 at 10:28 +0100, Wouter Cloetens wrote: > On Thu, Feb 28, 2008 at 05:23:40PM +0800, Zhao Liang-E3423C wrote: > > 1. disable many unused features > > 2. disable debug/trace > > 3. use binary registry or not use registry 4. disable runtime check > > Has anyone considered statically linking plugins? I suspect that would > be a rather big change, but you would win on startup time, in memory > consumption and in runtime CPU usage. Most likely, the biggest time consumption in initialization is checking for modifications of plugins (scannning directories, looking at timestamps, loading them if changed, ....). We *could* add an option to NOT do that scanning at startup (if an environment variable is set when running for example) and just load the available registry. In embedded environments you are most likely not installing new plugins very often, so this checking is almost never used but might cost a lot. You are of course then left with the cost of loading the actual plugins required by the application afterwards, but that's after initialization. Has anybody done some timing to see how long gst_init() takes ? Edward > > bfn, Wouter > > ---------------------------------------------------------------------- > --- This SF.net email is sponsored by: Microsoft Defy all challenges. > Microsoft(R) Visual Studio 2008. > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > _______________________________________________ > Gstreamer-embedded mailing list > Gstreamer-embedded at lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/gstreamer-embedded > -- Edward Hervey <edward.hervey at collabora.co.uk> Collabora Multimedia ------------------------------------------------------------------------ - This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Gstreamer-embedded mailing list Gstreamer-embedded at lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/gstreamer-embedded
