I wrote a simple Struts 2 TemplateEngine that renders tags in pure
Java, as opposed to the Freemarker that is used currently. I'm
seeing
performance improvements between 3 and 4 times faster than the old
tags. This engine is based on the design I layed out previously
[1].
It is better suited to simple tag rendering where the Freemarker
version is better suited for HTML-heavy tag output and
customization.
The Java engine:
- Allows the tag generator and "interceptors" to deal with tag
objects, not pure text
- Tag "interceptors" or handlers have full control over the output
- Serialization of tag objects into text can be customized
- Is fast - 3 to 4 times faster than the Freemarker engine
Anyways, if nothing else, it shows there are things we can do to
drastically speed up the tags w/o throwing out OGNL. If you
only use
the simple theme, this might be an attractive option that gives you
more customization and speed.
I'm kinda up in the air as to where to put this. I'm leaning
toward
committing it to the sandbox as then it would be clear it is
experimental, especially since not all tags and themes are
implemented.
Don
[1] -
http://www.mail-archive.com/dev@struts.apache.org/msg25065.html
On 12/13/06, Don Brown <[EMAIL PROTECTED]> wrote:
Very interesting... I wonder how much of the performance hit
was due
to
Freemarker and how much OGNL. Could you package this
application in
a
war and attach it to a JIRA ticket? I'd love to have it for
future
comparisons.
Don
dice wrote:
They are my stats Ted. The stats are posted below along with my
sample
JSP
code. I only tried the textfield tag but looking at the ftl
and vm
files for
the other tags I can't see how the results would be any
different.
Perhaps an interim solution could be to remove the use of OGNL
from
core
functionality that doesn't require it. eg. Is it really necessary
to
access
UIBean attributes from the theme templates using OGNL?
PS: I emulated the Struts 2 themes in Struts 1 by wrapping
Struts 1
tags in
JSP Tag files and performance was still impressive.
----------------------------------------------------------------
Technology - Hits per second with 1 user / 10 users:
Struts 1 - 109 / 191
Stripes - 88 / 140
WW2/SAF2 with default FreeMarker templates - 12 / 7
WW2/SAF2 with Velocity templates - 22 / 15
JSF - 27 / 40
Sample JSP:
<s:form action="/test.action" method="POST">
<s:textfield label="Label1" name="attribute1"/>
<s:textfield label="Label2" name="attribute2"/>
<s:textfield label="Label3" name="attribute3"/>
<s:textfield label="Label4" name="attribute4"/>
<s:textfield label="Label5" name="attribute5"/>
<s:textfield label="Label6" name="attribute6"/>
<s:textfield label="Label7" name="attribute7"/>
<s:textfield label="Label8" name="attribute8"/>
<s:textfield label="Label9" name="attribute9"/>
<s:textfield label="Nested Label1"
name="nestedBean.attribute1"/>
<s:textfield label="Nested Label2"
name="nestedBean.attribute2"/>
<s:textfield label="Nested Label3"
name="nestedBean.attribute3"/>
<s:textfield label="Nested Label4"
name="nestedBean.attribute4"/>
<s:textfield label="Nested Label5"
name="nestedBean.attribute5"/>
<s:textfield label="Nested Label6"
name="nestedBean.attribute6"/>
<s:textfield label="Nested Label7"
name="nestedBean.attribute7"/>
<s:textfield label="Nested Label8"
name="nestedBean.attribute8"/>
<s:textfield label="Nested Label9"
name="nestedBean.attribute9"/>
<s:submit/>
</s:form>
Ted Husted-3 wrote:
On 12/13/06, Ian Roughley <[EMAIL PROTECTED]> wrote:
Do you have the performance numbers that you can share? I'd
really
be
interested in them.
There are some interesting numbers here
*
http://javajmc.blogspot.com/2006/10/webwork-and-stripes-simple-performance.html
(be sure to read to the *end* of the commnets).
We might want to come up with a set of test pages that thorougly
exercise the core tags, so that we can run our own direct
comparisons
of S1, S2, et al.
Of course, the peformance is the still same as WebWork 2,
which is
driving some serious applications. We also know exactly where
lies
the
bottleneck. We need to fix or replace OGNL.
-Ted.
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