Hi Joe, sorry for the previus post, too fast fingers ;-) Long time ago I had similiar problem in struts 1, when accesing lists with logic:iterate it turned out that if i used <logic:iterate name="bean" property="myList"> and this getMyList() method was not really a getter but some logic that was building myList, logic:iterate was accesing myList like getMyList().get(0), then getMyList().get(1) and so on. Which obvoiusly kills the performance. I'm not using such getters since then, but that may be the case in s2 also.
Best greetings, Paweł Wielgus. On 25/06/2008, Paweł Wielgus <[EMAIL PROTECTED]> wrote: > Hi Joe, > i had similiar problem in struts > > > On 25/06/2008, yorlick kilroy <[EMAIL PROTECTED]> wrote: > > Thanks for the performance-tuning links Dave. I Found a couple of > > useful hints there. > > Still... the "problem" seems to be the OGNL implementation in struts2. > > It seems to me as if one should be VERY careful when using OGNL i.e. > > make use of it very sparingly. in some of my jsps I descend fairly > > deeply into my complex value objects consisting of maps and lists etc. > > I dont have any benchmark results but it "feels" like the time taken > > to render a jsp with lots of OGNL expressions increases exponentially > > proportional to the depth of the used OGNL expression, for example: > > > > <s:iterate ... > > > <s:property value="#object.a.b.c.name"/> > > <s:property value="#object.a.b.c.phone"/> > > </s:iterate> > > > > Which isn't a performance problem when writing the above code in pure > > java - only when done in struts2 OGNL > > > > Can anyone confirm this? > > > > Perhaps OGNL is only meant to be used for accessing only immediate > > properties of an object and not to descend down into complex > > tree-object-graphs.? > > > > --- Joe > > > > On 6/24/08, Dave Newton <[EMAIL PROTECTED]> wrote: > > > http://struts.apache.org/2.x/docs/performance-tuning.html > > > > > > Dave > > > > > > > > > --- On Tue, 6/24/08, yorlick kilroy <[EMAIL PROTECTED]> wrote: > > > > > >> From: yorlick kilroy <[EMAIL PROTECTED]> > > >> Subject: Slow performance with Struts2 > > >> To: user@struts.apache.org > > >> Date: Tuesday, June 24, 2008, 10:23 AM > > >> Hi, > > >> > > >> I was wondering if there is a way to tweak struts2 > > >> performance. > > >> I ported an old struts1 application to struts2. I have jsps > > >> that have > > >> rather large and complex lists that I now iterate using > > >> Struts2 > > >> <s:iterate> and OGNL instead of <logic:iterate> > > >> and EL used in > > >> struts1. I noticed that the performance using Struts2 is > > >> pretty much > > >> lower than that of the Struts1 application, especially when > > >> displaying > > >> large lists and descending into complex objects using OGNL. > > >> I read that using dojo can cause this, but as far as I know > > >> I'm not > > >> (consciously) using dogo, ajax etc. just plain struts2 > > >> core. > > >> > > >> -- Joe > > >> > > >> --------------------------------------------------------------------- > > >> 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] > > > > >
