Hi Martin, Yes, that's right.
The dojo "requires" seemed unexpectedly slow during our tests. I was using Firefox's Firebug to check page load times. From memory, it looked like the dojo includes were being requested sequentially and seemed to give substantial page loading overhead (>2s) even if the dojo .js files were cached. I never fully understood why there was a large overhead although the dojo files were supposedly cached. It might have been a quirk with firebug and dojo "requires", or maybe the "requires" routine itself is slow, when called 30+ times. About 5 dojo files were consistently returning "not found" as well, which may not have helped the load times. Removing as much dojo stuff as I could, and upgrading from Struts 2.0.8 to 2.0.9 has solved our page load time issues. Regards Jason -----Original Message----- From: Martin Gainty [mailto:[EMAIL PROTECTED] Sent: Friday, 21 September 2007 11:41 AM To: Struts Users Mailing List Subject: Re: [s2] Struts head tag KILLS (> 10s) page load time Hi Jason- so by attentuating dojo includes you decreased initial load time for dojo with the beneficial side effect of faster response to the browser? Thanks/ Martin-- ----- Original Message ----- From: "Jason Wyatt" <[EMAIL PROTECTED]> To: "'Struts Users Mailing List'" <user@struts.apache.org> Sent: Thursday, September 20, 2007 9:09 PM Subject: RE: [s2] Struts head tag KILLS (> 10s) page load time >I had the same issue... We use the ajax tabbed panel but no other dojo > widgets, but the <s:head theme="ajax"> tag had dojo "requiring" all of the > dojo widget library. > > This was causing our page to fire off 70+ requests when loading. As our > app > needs to be accessed up to a thousand km away, tests showed initial load > times of over 10s because of latency. > > I modified web\template\ajax\head.ftl to include a custom > web\hack\ajax\dojoRequire.js that had the minimum dojo includes for the > tabbed panels. This managed to get the number of requests down to around > 30, > mostly our own images and scripts, which gave acceptable load times. > > Eg. > > web\template\ajax\head.ftl: > > <#include "/${parameters.templateDir}/${themeProperties.parent}/head.ftl" > /> > <script type="text/javascript" > src="<@s.url value='/hack/ajax/dojoRequire.js' includeParams='none' > encode='false' />"></script> > <script type="text/javascript" > src="<@s.url value='/struts/CommonFunctions.js' > includeParams='none' > encode='false'/>"></script> > > > web\hack\ajax\dojoRequire.js: > > dojo.require("dojo.io.BrowserIO"); > dojo.require("dojo.event.topic"); > > dojo.hostenv.setModulePrefix('struts', 'struts'); > //dojo.require('dojo.widget.*'); > dojo.widget.manager.registerWidgetPackage('struts.widget'); > > dojo.require("struts.widget.Bind"); > dojo.require("struts.widget.BindDiv"); > //dojo.require("struts.widget.BindAnchor"); > //dojo.require("struts.widget.ComboBox"); > //dojo.require("struts.widget.StrutsTimePicker") > //dojo.require("dojo.widget.Editor2"); > //dojo.hostenv.writeIncludes(); // not needed, but allows the Venkman > debugger to work with the includes > > > Hope this helps, regards > Jason > > ----- > Falun Dafa Truth - Compassion - Forbearance > > A mind & body practice under persecution in China > > http://www.faluninfo.net > > > > > > -----Original Message----- > From: Frank W. Zammetti [mailto:[EMAIL PROTECTED] > Sent: Friday, 21 September 2007 8:09 AM > To: Struts Users Mailing List > Subject: Re: [s2] Struts head tag KILLS (> 10s) page load time > > If Dojo is being used for AJAX in this case, that's my guess. I know from > experience that Dojo, can issue a TON of requests even if you think your > only loading a small portion of it. Assuming this guess is correct, > Musachy, does S2 use a custom build of Dojo? If not, that might be worth > considering. > > Frank > > -- > Frank W. Zammetti > Founder and Chief Software Architect > Omnytex Technologies > http://www.omnytex.com > AIM/Yahoo: fzammetti > MSN: [EMAIL PROTECTED] > Author of "Practical Ajax Projects With Java Technology" > (2006, Apress, ISBN 1-59059-695-1) > and "JavaScript, DOM Scripting and Ajax Projects" > (2007, Apress, ISBN 1-59059-816-4) > Java Web Parts - http://javawebparts.sourceforge.net > Supplying the wheel, so you don't have to reinvent it! > > chengas123 wrote: >> Hi, >> I am working on a Struts 2 page and page load times are way too high. >> I tracked it down to the Struts head tag, which I have as follows: >> <s:head theme="ajax" /> Without the tag, my page issues 3 requests and >> takes 453ms to load. With the tag, the page issues 54 requests taking >> 12.24s to load. >> Is there something I am doing wrong here? >> >> Thanks, >> Ben > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [EMAIL PROTECTED] > For additional commands, e-mail: [EMAIL PROTECTED] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
