Le 19/09/2011 02:40, Stefan Steiniger a écrit : > good work Michael. > I am wondering too why they used simple "Lists" ... maybe it was just a > thing that they did in the beginning? Difficult to choice the best Collection. List has some advantages too. It is very fast to add new items and to do random access with get(int). A collection may have the best performance in 99% of cases, and an unacceptable one in the other 1%. Embarassing.
Let's wait and see. Michaël > One thought I have is about serialization or web services.. but all of > that stuff is internally, so I can't really think of a connection. > > anyway, thanks again > stefan > > > Am 18.09.2011 08:57, schrieb Michaël Michaud: >> Hi, >> >> I have made important modifications in EditTransaction class in order to >> improve performance. >> 1 - I have replaced most Lists by Sets and Maps avoiding the >> List.contains() method which is far too slow. >> 2 - I have removed geometry cloning in createFeature and deleteFeature >> methods, avoiding time and memory consuming operations. >> >> I cannot say I'm 100% sure cloning was useless in every case, but I made >> a lot of tests to checks it does not beark anythink. Please, report any >> suspect behaviour (from next NB). >> >> You'll see the benefits if you compare the following operation which >> uses a undoable transaction : >> Explode a multigeometry having 180000 small polygons >> Before >> 2mn 50s - memory increase from 160Mb to 425Mb >> After >> 10 s - memory increase from 160Mb to 260Mb >> >> Michaël >> >> >> ------------------------------------------------------------------------------ >> BlackBerry® DevCon Americas, Oct. 18-20, San Francisco, CA >> http://p.sf.net/sfu/rim-devcon-copy2 >> _______________________________________________ >> Jump-pilot-devel mailing list >> [email protected] >> https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel >> > > ------------------------------------------------------------------------------ > BlackBerry® DevCon Americas, Oct. 18-20, San Francisco, CA > Learn about the latest advances in developing for the > BlackBerry® mobile platform with sessions, labs& more. > See new tools and technologies. Register for BlackBerry® DevCon today! > http://p.sf.net/sfu/rim-devcon-copy1 > _______________________________________________ > Jump-pilot-devel mailing list > [email protected] > https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel ------------------------------------------------------------------------------ All the data continuously generated in your IT infrastructure contains a definitive record of customers, application performance, security threats, fraudulent activity and more. Splunk takes this data and makes sense of it. Business sense. IT sense. Common sense. http://p.sf.net/sfu/splunk-d2dcopy1 _______________________________________________ Jump-pilot-devel mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/jump-pilot-devel
