{"id":1120,"date":"2013-02-17T16:17:05","date_gmt":"2013-02-17T14:17:05","guid":{"rendered":"http:\/\/hasselba.ch\/blog\/?p=1120"},"modified":"2013-02-17T16:43:07","modified_gmt":"2013-02-17T14:43:07","slug":"a-performance-bottleneck","status":"publish","type":"post","link":"https:\/\/hasselba.ch\/blog\/?p=1120","title":{"rendered":"A performance bottleneck?"},"content":{"rendered":"

Paul Withers wrote an very interesting article<\/a> about the difference between a passthrough UIComponents<\/em> and the corresponding XPages elements. This means the use of <br><\/em> instead a <xp:br><\/em>, or a <div><\/em> instead of a <xp:div><\/em>. A while ago I have tested if this would affect the performance, and as far as I know it makes no difference.<\/p>\n

Here is the code I used to test the performance:<\/p>\n

<?xml version=\"1.0\" encoding=\"UTF-8\"?>\r\n <xp:view xmlns:xp=\"http:\/\/www.ibm.com\/xsp\/core\">\r\n    <h1>Name of the Element<\/h1>\r\n    <xp:repeat id=\"repeatFull\" rows=\"9999999\">\r\n       <xp:this.value><![CDATA[#{javascript:\r\n          var arr:java.util.Vector = new java.util.Vector();\r\n          for( var i=0; i<10;i++){\r\n             arr.add( i );\r\n          }\r\n          var start = java.lang.System.currentTimeMillis();\r\n\r\n          arr}]]>\r\n       <\/xp:this.value>\r\n\r\n       <xp:repeat id=\"repeat1\" rows=\"9999999\">\r\n          <xp:this.value><![CDATA[#{javascript:\r\n             var arr:java.util.Vector = new java.util.Vector();\r\n             for( var i=0; i<100000;i++){\r\n                arr.add( i );\r\n             }\r\n             var start = java.lang.System.currentTimeMillis();\r\n             arr}]]>\r\n          <\/xp:this.value>\r\n\r\n          <!-- HERE COMES THE REPEATING ELEMENT \/\/-->\r\n\r\n       <\/xp:repeat>\r\n       <xp:label id=\"labelTimer\">\r\n          <xp:this.value>\r\n             <![CDATA[#{javascript:\r\n                var end = java.lang.System.currentTimeMillis();\r\n                \"Total \" + (end - start) + \" ms.\"\r\n             }]]>\r\n          <\/xp:this.value>\r\n       <\/xp:label>\r\n    <\/xp:repeat>\r\n    <xp:br \/>\r\n    <xp:button value=\"Refresh\" id=\"buttonRefresh\">\r\n       <xp:eventHandler event=\"onclick\" submit=\"true\"\r\n          refreshMode=\"partial\" refreshId=\"repeatFull\">\r\n       <\/xp:eventHandler>\r\n   <\/xp:button>\r\n\r\n<\/xp:view><\/code><\/pre>\n