Jordi,
I took your freemarker and JSP code below and implemented it in three
equivalent S2 actions that generated a list of 20 Offers. I then took
some basic performance measurements with JMeter
Test settings:
Http get request directly to the action url
Thread Group: 50 threads, 1 second ramp up period, 100 loops
Gaussian random timer with 100ms deviation and 300ms constant delay offset
Each webapp deployed in the same Tomcat 5.5.17 server on a basic winxp
box (* yes, this is a bad test environment, but at least it was
consistent for the 3 cases)
Case1: Install of S2.0.6 with struts object factory, no optimisations,
JSP result
Result: 5000 Samples, Throughput: 87.8 requests/sec 1139.71 KB/sec
Case2: Install of S2.0.6 with struts object factory, local template
directory and freemarker template update delay of 60000, JSP result
Result: 5000 Samples, Throughput: 89.6 requests/sec 1213.35 KB/sec
Case3: Install of S2.0.6 with struts object factory, freemarker result
Result: 5000 Samples, Throughput: 73.7 requests/sec 579.12 KB/sec
Surprised? I was.
The explanation for Case2 only being marginally faster than Case1 is
that the JSP doesn't include any UIBeans (the templates are hardly used
at all)
An explanation for why Case3 may be so much worse is that using struts
tags within FTL is slower than using them directly in compiled JSP. As
your sample doesn't make use of the UIBeans that use the freemarker
templates its a disadvantage in this case to provide an FTL result.
Repeating the tests yielded consistent relative results on this server.
I can't explain why these are not consistent with your test results.
regards,
Jeromy Evans
More details from JMeter:
Case1:
Samples: 5000
Average: 247
Median: 251
90% line: 319
Min: 0
Max: 721
Throughput: 87.8 requests/sec 1139.71 KB/sec
Case2:
Samples: 5000
Average: 234
Median: 235
90% line: 329
Min: 0
Max: 799
Throughput: 89.6 requests/sec 1213.35 KB/sec
Case3:
Samples: 5000
Average: 361
Median: 361
90% Line: 438
Min: 0
Max: 924
Throughput: 73.7 requests/sec 579.12 KB/sec
Jordi Rubio Moreno wrote:
Hi Jeromy,
Is JSP taglib too slow and not recommended solution for production portals?
Hi Jordi, I'm impressed you made the effort to compare Freemarker vs Jsp performance. I've re-posted your question at the top of this email in the hope > that it gains the attention of some of the more experienced developers.
Thanks a lot! :) I hope this thread can open a sane discussion about
performance, ticks and tips
In your test did you ensure your comparison doesn't include the first time the JSP
is retrieved? On the first request the JSP is converted to java and > then
compiled which is inevitably slow. Subsequent requests execute the bytecode and
are much faster. Did you take this into account?
That's correct. I have compared both scenarios without considering the first
JSP access (I know how JSP works at this level).
Thanks again for your time :)
Cheers
Jordi Rubio Moreno
-----Mensaje original-----
De: Jeromy Evans [mailto:[EMAIL PROTECTED]
Enviado el: lunes, 28 de mayo de 2007 14:37
Para: Struts Users Mailing List
Asunto: Re: [S2] Freemarker vs struts taglibs
Jordi Rubio Moreno wrote:
> Is JSP taglib too slow and not recommended solution for production portals?
Hi Jordi, I'm impressed you made the effort to compare Freemarker vs Jsp
performance. I've re-posted your question at the top of this email in the hope
that it gains the attention of some of the more experienced developers.
In your test did you ensure your comparison doesn't include the first time the
JSP is retrieved? On the first request the JSP is converted to java and then
compiled which is inevitably slow. Subsequent requests execute the bytecode
and are much faster. Did you take this into account?
Within struts2, I think it would be a fair assumption that JSP will always be
somewhat slower than pure Freemaker because the UIBeans are rendering using the
Freemarker template engine anyway. I wouldn't have imagined it would be <10%
slower but have no evidence. I'll try to run the same comparison if I get a spare
moment.
Anyone else care to comment?
Jordi Rubio Moreno wrote:
Hi Jeromy,
I apologize to respond this email so late.
I've develop a little test portal (close in functionality to production
portal), and I've notice that JSP taglib are slower that Freemarker equivalent
page (I'm speaking about a JSP result page rendered in 1.2s and the same page
rendered with freemarker in 600ms).
It's certain that there are a lot of JSP taglib documentation and S2 forums,
but in a production site it's critical an excellent time response.
I don't know if I'm doing anything wrong... I show you a little fragment of
test code in JSP taglibs an Freemarker:
***************** JSP taglibs **********************
<s:iterator value="offers">
<tr>
<td>
<s:url id="curUrl" action="Redirect"
includeParams="none">
<s:param name="url"><s:property
value="offUrl"/></s:param>
</s:url>
<a href="${curUrl}"><s:property
value="offTitle"/></a><br>
<s:if test="%{offCompany != null}">
<b><s:text name="Results.company"/></b>: <s:property
value="offCompany"/><br>
</s:if>
<s:if test="%{offSalary != null}">
<b><s:text name="Results.salary"/></b>: <s:property
value="offSalary"/><br>
</s:if>
<s:property value="offDescr"/><br>
<s:url id="addToShortListUrl" action="ShortList!add"
includeParams="none">
<s:param name="offId"><s:property
value="offId"/></s:param>
</s:url>
<a href="${addToShortListUrl}"><s:text
name="Results.addToShortList"/></a><br><br>
</td>
</tr>
</s:iterator>
******************** FREMARKER ************************
<#list offers as o>
<tr>
<td>
<@s.url id="curUrl" action="Redirect" includeParams="none"
url="${o.offUrl}" />
<a href="${curUrl}">${o.offTitle}</a><br>
<#if o.offCompany != "">
<b><@s.text
name="Results.company"/></b>: ${o.offCompany}<br>
</#if>
<#if o.offSalary != "">
<b><@s.text
name="Results.salary"/></b>: ${o.offSalary}<br>
</#if>
${o.offDescr}<br>
<@s.url id="addToShortListUrl" action="ShortList!add"
includeParams="none" offId="${o.offId}" />
<a href="${addToShortListUrl}"><@s.text
name="Results.addToShortList"/></a><br><br>
</td>
</tr>
</#list>
Is JSP taglib an slow and not recommended solution for production portals?
Thanks a lot for your patience :)
Best regards!
Jordi Rubio Moreno
-----Mensaje original-----
De: Jeromy Evans [mailto:[EMAIL PROTECTED]
Enviado el: sábado, 19 de mayo de 2007 6:13
Para: Struts Users Mailing List
Asunto: Re: [S2] Freemarker vs struts taglibs
If you're a new user of Struts2 and JSP then I suggest you simply start with
JSP as there's far more resources and tutorials available.
You only must become aware of Freemarker once you wish to extend the default
themes.
Within Struts2, by default Freemarker templates are used when rendering the UI
components (ie. the S2 taglib classes that extend AbstractUITag such as
TextField).
eg. if you use the <s:textfield> tag, Struts2 will render it using the text.ftl
template for the specified/current theme.
Eventually you may wish to extend the theme (change with the way <s:textfield>
is rendered) at which time you'll probably create your own templates for the UI
components-of-interested and start using Freemarker.
Eventually may you also wish to create your own taglib UI components following
the the S2 conventions in which case you'd follow the same template approach
(but Struts2 does not preclude you from using any other JSP/taglib convention).
As mentioned in previous responses and the link below, Struts2 allows you to
use entire Freemarker page results instead of JSP. There are good technical
arguments for using Freemarker instead of JSP, but generally speaking right now
you'll find more people to help, initially less effort, more jobs and better
IDE-support with JSP and almost everything you learn with JSP can be later be
applied within the Freemarker context.
On 5/17/07, Musachy Barroso <[EMAIL PROTECTED]> wrote:
FreeMarker is a template engine, with it's own syntax. JSP tags can
be used in FreeMarker, adding some configuration. In the case of
Struts tags, no configuration is required, and you can use them like
you would in JSP except a few differences, see this for details:
http://struts.apache.org/2.x/docs/freemarker.html
musachy
On 5/17/07, Jordi Rubio Moreno <[EMAIL PROTECTED]> wrote:
Hi,
I'm a bit confused. I need to decide if I'll use Freemarker or
Struts taglibs, and I don't know the differences between both. E.g.
what's
the
difference between <s:iterator> and <@s.iterator>, <s:url> and
<@s.url>,
etc etc...
I have seen all the tutorials and examples I have found working
with taglibs, but people says WebWork and Struts 2's choice is
Freemarker...
Please, help me to understand why taglibs or Freemarker :)
Thanks a lot!
Cheers!
--
"Hey you! Would you help me to carry the stone?" Pink Floyd
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