Ah, thanks Musachy, that explains what I was seeing. The total latency experienced for the dojo files to load every time was pretty high when running over a long distance, as the files are requested sequentially, rather than as parallel requests... Not sure what the best solution would be to this one apart from customisation of the dojo includes??
Regards Jason -----Original Message----- From: Musachy Barroso [mailto:[EMAIL PROTECTED] Sent: Monday, 24 September 2007 1:43 PM To: Struts Users Mailing List Subject: Re: [s2] Struts head tag KILLS (> 10s) page load time When a file is loaded using dojo.require, it is not cached by the browser. musachy On 9/23/07, Jason Wyatt <[EMAIL PROTECTED]> wrote: > 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] > > -- "Hey you! Would you help me to carry the stone?" Pink Floyd --------------------------------------------------------------------- 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]
