The models and data providers are asked for their data at render time. Once the final data is available Wicket starts populating the HTML markup with it.
Martin Grigorov Wicket Training and Consulting https://twitter.com/mtgrigorov On Thu, Jun 16, 2016 at 4:17 PM, Lars Törner <lars.tor...@gmail.com> wrote: > Hi Martin, > > we use wicket 6.22. > > Doesn't the rendering take place when everything else is done? I.e the > wicket components are already created and populated with data when the > rendering phase starts. I guess I have to dig a bit deeper... anyway, > thanks for your quick answers! > > Lasse > > 2016-06-16 15:47 GMT+02:00 Martin Grigorov <mgrigo...@apache.org>: > > > Also it could be similar to > > https://issues.apache.org/jira/browse/WICKET-6177. > > There the user also has a lot of components in the tree and this takes > time > > at page serialization time. > > > > Martin Grigorov > > Wicket Training and Consulting > > https://twitter.com/mtgrigorov > > > > On Thu, Jun 16, 2016 at 3:46 PM, Martin Grigorov <mgrigo...@apache.org> > > wrote: > > > > > Hi Lasse, > > > > > > Which version of Wicket do you use ? > > > > > > I think you will have to use a profiler to see where the times is > spent. > > > It could be Wicket, but also it could be the application spending a lot > > of > > > time while loading the data which should be rendered. > > > > > > > > > Martin Grigorov > > > Wicket Training and Consulting > > > https://twitter.com/mtgrigorov > > > > > > On Thu, Jun 16, 2016 at 3:37 PM, Lars Törner <lars.tor...@gmail.com> > > > wrote: > > > > > >> Hi, > > >> > > >> we have an issue with rendering performance and I wonder if there are > > any > > >> common misusages of wicket when it comes to this. > > >> > > >> When rendering a fully expanded tree with 160 top level nodes and > mostly > > >> no > > >> subtrees (an expanded node is a forms with a bunch of labels and > > >> attributes) it takes about 20 seconds for the page to load (actually > > it's > > >> an Ajax request) and it seems that most of this time is spent when > > wicket > > >> renders the components. > > >> > > >> For one ot these 160 nodes, which has some sub nodes and forms, > > rendering > > >> takes about half a second. > > >> > > >> I'm using the RenderPerformanceListener from wicket-devutils to do the > > >> measuring and gets, for the entire expanded tree, over 22 000 > > >> "afterRender" > > >> rows in the log from the RenderPerformanceListener. > > >> This is in my opinion a huge number! > > >> > > >> - is it expected that rendering of so many components takes this > amount > > of > > >> time? > > >> - is this amount a sign of that we are using wicket in the wrong way? > > >> > > >> > > >> Don't know if this makes any sense to anyone but this is the last > lines > > of > > >> the log output for one of the top level nodes: > > >> > > >> > > >> > > > 'mainContent:detailViewer:detailAndSidebarContainer:detailContainer:bodyContainer:subtree:subtree:branches:158:subtree:branches:8:node:content:component:objectViewerForm:objectSection:1:objectSectionContent:attributeRow:attributeRowCol:12:cell:attributeEditLabel' > > >> for 0ms > > >> > > >> > > > 'mainContent:detailViewer:detailAndSidebarContainer:detailContainer:bodyContainer:subtree:subtree:branches:158:subtree:branches:8:node:content:component:objectViewerForm:objectSection:1:objectSectionContent:attributeRow:attributeRowCol:12:cell:attributeDisplayLabel' > > >> for 0ms > > >> > > >> > > > 'mainContent:detailViewer:detailAndSidebarContainer:detailContainer:bodyContainer:subtree:subtree:branches:158:subtree:branches:8:node:content:component:objectViewerForm:objectSection:1:objectSectionContent:attributeRow:attributeRowCol:12:cell:attributeDisplay' > > >> for 0ms > > >> > > >> > > > 'mainContent:detailViewer:detailAndSidebarContainer:detailContainer:bodyContainer:subtree:subtree:branches:158:subtree:branches:8:node:content:component:objectViewerForm:objectSection:1:objectSectionContent:attributeRow:attributeRowCol:12:cell:attributeFeedback' > > >> for 1ms > > >> > > >> > > > 'mainContent:detailViewer:detailAndSidebarContainer:detailContainer:bodyContainer:subtree:subtree:branches:158:subtree:branches:8:node:content:component:objectViewerForm:objectSection:1:objectSectionContent:attributeRow:attributeRowCol:12:cell' > > >> for 2ms > > >> > > >> > > > 'mainContent:detailViewer:detailAndSidebarContainer:detailContainer:bodyContainer:subtree:subtree:branches:158:subtree:branches:8:node:content:component:objectViewerForm:objectSection:1:objectSectionContent:attributeRow:attributeRowCol:12' > > >> for 2ms > > >> > > >> > > > 'mainContent:detailViewer:detailAndSidebarContainer:detailContainer:bodyContainer:subtree:subtree:branches:158:subtree:branches:8:node:content:component:objectViewerForm:objectSection:1:objectSectionContent:attributeRow:attributeRowCol' > > >> for 26ms > > >> > > >> > > > 'mainContent:detailViewer:detailAndSidebarContainer:detailContainer:bodyContainer:subtree:subtree:branches:158:subtree:branches:8:node:content:component:objectViewerForm:objectSection:1:objectSectionContent:attributeRow' > > >> for 27ms > > >> > > >> > > > 'mainContent:detailViewer:detailAndSidebarContainer:detailContainer:bodyContainer:subtree:subtree:branches:158:subtree:branches:8:node:content:component:objectViewerForm:objectSection:1:objectSectionContent' > > >> for 27ms > > >> > > >> > > > 'mainContent:detailViewer:detailAndSidebarContainer:detailContainer:bodyContainer:subtree:subtree:branches:158:subtree:branches:8:node:content:component:objectViewerForm:objectSection:1' > > >> for 27ms > > >> > > >> > > > 'mainContent:detailViewer:detailAndSidebarContainer:detailContainer:bodyContainer:subtree:subtree:branches:158:subtree:branches:8:node:content:component:objectViewerForm:objectSection' > > >> for 28ms > > >> > > >> > > > 'mainContent:detailViewer:detailAndSidebarContainer:detailContainer:bodyContainer:subtree:subtree:branches:158:subtree:branches:8:node:content:component:objectViewerForm' > > >> for 29ms > > >> > > >> > > > 'mainContent:detailViewer:detailAndSidebarContainer:detailContainer:bodyContainer:subtree:subtree:branches:158:subtree:branches:8:node:content:component' > > >> for 29ms > > >> > > >> > > > 'mainContent:detailViewer:detailAndSidebarContainer:detailContainer:bodyContainer:subtree:subtree:branches:158:subtree:branches:8:node:content' > > >> for 36ms > > >> > > >> > > > 'mainContent:detailViewer:detailAndSidebarContainer:detailContainer:bodyContainer:subtree:subtree:branches:158:subtree:branches:8:node' > > >> for 36ms > > >> > > >> > > > 'mainContent:detailViewer:detailAndSidebarContainer:detailContainer:bodyContainer:subtree:subtree:branches:158:subtree:branches:8:subtree:branches' > > >> for 0ms > > >> > > >> > > > 'mainContent:detailViewer:detailAndSidebarContainer:detailContainer:bodyContainer:subtree:subtree:branches:158:subtree:branches:8:subtree' > > >> for 1ms > > >> > > >> > > > 'mainContent:detailViewer:detailAndSidebarContainer:detailContainer:bodyContainer:subtree:subtree:branches:158:subtree:branches:8' > > >> for 37ms > > >> > > >> > > > 'mainContent:detailViewer:detailAndSidebarContainer:detailContainer:bodyContainer:subtree:subtree:branches:158:subtree:branches' > > >> for 340ms > > >> > > >> > > > 'mainContent:detailViewer:detailAndSidebarContainer:detailContainer:bodyContainer:subtree:subtree:branches:158:subtree' > > >> for 340ms > > >> > > >> > > > 'mainContent:detailViewer:detailAndSidebarContainer:detailContainer:bodyContainer:subtree:subtree:branches:158' > > >> for 359ms > > >> > > >> Cheers > > >> Lasse > > >> > > > > > > > > >
