Hi, On Tue, Nov 1, 2011 at 10:11 AM, Kim Yunhan <spb...@gmail.com> wrote: > Currently, elm_map requests all visible map image tile to map server at the > same time. > If the scene is turned off while panning or zooming, it will be aborted on > HTTP requests. > But it already sent to map server, and it already made useless HTTP > connections. > So if you pan scrolling quickly, elm_map try to download and abort too many > HTTP > connections repeatedly. > > If you have stable and high-throughput data connection, it doesn't matter > on your side. > However map server will get high load, It is sufficient reason to block > you. > In another case, if you have poor data connection such as 3G connection, it > has less > throughput and it causes delay of downloading. And finally, the device is > as full as > HTTP connections even you already aborted. It makes low-performance issue on > your device. > > I wrote a patch for solving this situation. > The idea is simple. > > 1. I limited number of maximum HTTP request on elm_map side. > 2. If maximum HTTP request is exceed, keep requests on Eina_List. > 3. If each image downloading is completed, try to download recent request. > (Because it has strong possibility for your screen) > 4. At the same time, invisible request will be removed. > (It doesn't make HTTP connection yet) > > I tested many times on my desktop and device. > It works for me. And elm_map's performance is improved appreciably on 3G > connections. > > Please review this patch.
I like the overall idea of this patch. It's simple, the patch is clean and easy to understand, so I have nothing about pushing it in svn. I have still a few question, did you investigate if it was possible with curl to limit the number of simultaneous request to the server and reuse the same connection ? If that's possible, it would be nice to enable that at ecore_con_url level. If not, maybe it make sense to implement the idea in ecore_con_url directly for EFL 1.2. -- Cedric BAIL ------------------------------------------------------------------------------ RSA® Conference 2012 Save $700 by Nov 18 Register now http://p.sf.net/sfu/rsa-sfdev2dev1 _______________________________________________ enlightenment-devel mailing list enlightenment-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/enlightenment-devel
