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Date: Tue, 10 Jul 2007 09:42:46 -0700 (PDT)
From: cilquirm <aadi.deshpande@gmail.com>
To: user@struts.apache.org
Subject: Re: Struts 2 performance
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References: <3e7716cd0707091908y76e024acu98b88e02b428df58@mail.gmail.com>


I've found that static html pages are blazing fast, especially those that
don't involve stylesheets, images, or javascript includes.  :-)

Seriously, though, I don't think there's any disagreement that ognl ( or any
runtime expression language ) adds a certain amount of overhead, but I've
never seen any of my servers pinned that high, and I've been working with
WW2/S2 for probably around 3 years now. 

At the end of the day, I can argue to my company that we'll get faster
performance by switching to servlets and straight jsp, but I don't want to
be the one debugging that when it all goes to pot. I'm all for the minor
tradeoff on performance for the incredibly superior gains in productivity
and general developer happiness that S2 affords me.

my2c, 
-a

P.S.  One thing you can do, if you're so inclined once you've tried out the
other performance tips, is to give ognl 2.7 a go.  You can get it via the
Tapestry libs download.  It's a straightforward replacement, just drop in 
ognl.jar and javassist.jar and start up.  

I've done it here and it hasn't really changed my perception of my webapp
but YMMV


climbingrose wrote:
> 
> Hi all,
> 
> I've been developing Struts 2 webapp for nearly a year now and have a
> great
> deal of experience with it. Personally, the architecture of Struts 2 is
> much
> cleaner than its predecessor. However, recently I converted one of my
> Struts
> 2 pages into Servlet + JSP solution and it turns out that Struts 2
> performance is much worse than Servlet + JSP. In Servlet + JSP solution,
> the
> server CPU is barely over 3-4% while with Struts 2, it's around 70% most
> of
> the time. The JSP page is around 300 lines of code. I don't have a chance
> to
> do any profiling to find out where is the bottleneck but I suspect it
> might
> be OGNL which hinders the performance. I think, we already have a pretty
> good feature set so we can start thinking about optimising Struts 2. That
> will probably speed up its adoption in the industry.
> 
> 
> 
> The other thing I want to comment on is the use of Dojo as Ajax theme. I
> don't have much experience with Dojo apart from a few hours playing around
> with it. However, even with the latest version (0.9), Dojo just seems to
> be
> to heavy weight for most purposes. I mean if you only want a bloody
> calendar
> in your webapp, you don't want to load up a 100kb of  javascript. Plus, it
> might be my experience only, Dojo seems to have the tendency to hang my
> browser everytime I open a Dojo-based app.
> 
> -- 
> Regards,
> 
> Cuong Hoang
> 
> 

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