I agree. Just for comparison check out these numbers. Something is fundamentally
wrong
with how WW is implemented or how I am abusing it :)
case 1) <ui:select> tag
Execution Time=12.482 sec
case 2) <ww:iterator> tag only
Execution Time=10.709 sec
case 3) JSP scriplet using WW API
Execution Time=0.0020 sec
Here is the code:
<%@ taglib uri="webwork" prefix="ww" %>
<%@ taglib uri="webwork" prefix="ui" %>
<%@ page session="false" %>
<%
long start, end = -1;
%>
<table width="100%">
<tr>
<!-- start cell with webwork components -->
<ww:action name="'CountriesList'" id="countrieslist"/>
<% start = System.currentTimeMillis(); %>
<ui:select label="'Country'" name="'country'" list="@countrieslist/countries"
listKey="'countryCode'" listValue="'description'"/>
<% end = System.currentTimeMillis(); %>
<!-- end cell with webwork components -->
</tr>
</table>
<p>
Execution Time=<%= ((double)end - start) / 1000.0 %> sec
</p>
<table width="100%">
<tr>
<!-- start cell with webwork components -->
<% start = System.currentTimeMillis(); %>
Country: <select name="country">
<ww:iterator value="@countrieslist/countries">
<option value="<ww:property value="countryCode"/>">
<ww:property value="description"/>
</option>
</ww:iterator>
</select>
<% end = System.currentTimeMillis(); %>
<!-- end cell with webwork components -->
</tr>
</table>
<p>
Execution Time=<%= ((double)end - start) / 1000.0 %> sec
</p>
<table width="100%">
<tr>
<!-- start cell with webwork components -->
<% start = System.currentTimeMillis(); %>
<%
webwork.util.ValueStack vs = webwork.util.ValueStack.getStack( pageContext );
java.util.Collection countries =
(java.util.Collection)vs.findValue("@countrieslist/countries");
out.println("<PRE>");
for(java.util.Iterator iter = countries.iterator(); iter.hasNext(); )
{
iter.next();
}
out.println("</PRE>");
%>
<% end = System.currentTimeMillis(); %>
<!-- end cell with webwork components -->
</tr>
</table>
<p>
Execution Time=<%= ((double)end - start) / 1000.0 %> sec
</p>
> -----Original Message-----
> From: Hani Suleiman [mailto:[EMAIL PROTECTED]]
> Sent: Sunday, January 12, 2003 3:04 PM
> To: [EMAIL PROTECTED]
> Subject: Re: [OS-webwork] Slow performance using ww:iterator tag
> (version 1.2.1)?
>
>
> Only after the first try. I don't think slapping on oscache is the
> solution, as it just hides the performance problem (of course, adding
> oscache is always a good idea, but making that first hit faster would
> also be a good idea)
>
> On Sunday, January 12, 2003, at 06:00 PM, Mike Cannon-Brookes wrote:
>
> > Simple : OSCache with a session scoped cache entry. This
> will drop the
> > run
> > time down to about 1ms.
> >
> > Cheers,
> > Mike
> >
> > On 12/1/03 9:36 PM, "Robert Nicholson"
> ([EMAIL PROTECTED]) penned the
> > words:
> >
> >> That is flabbergasting. Couldn't you cache the list when
> the user logs
> >> in?
> >>
> >> Why don't you take a look at the template and see if you
> can nail down
> >> what's causing the delays assuming you haven't done that already of
> >> course. If it's user specific what does countries method look like?
> >>
> >> On Sunday, January 12, 2003, at 01:38 AM, Kirk Rasmussen wrote:
> >>
> >>> Happy new year everyone! I have a simple question about the
> >>> <webwork:iterator> tag and performance using WW 1.2.1.
> >>>
> >>> I have this list of countries that contains 245 entries. When I
> >>> execute the following fragment, it takes about 15 seconds
> to execute
> >>> the iterator loop by itself. Any of you WW gurus have
> some pointers
> >>> on making it faster? I can't simply cache the select
> list because
> >>> the
> >>> form is for an address book so the selected value is user
> specific.
> >>>
> >>> <%@ taglib uri="webwork" prefix="ww" %>
> >>> <%@ taglib uri="webwork" prefix="ui" %>
> >>> <%
> >>> long start, end = -1;
> >>> %>
> >>>
> >>> <table width="100%">
> >>> <tr>
> >>> <!-- start cell with webwork components -->
> >>> <ww:action name="'CountriesList'" id="countrieslist"/>
> >>> <% start = System.currentTimeMillis(); %>
> >>> <ui:select label="'Country'" name="'country'"
> >>> list="@countrieslist/countries" listKey="'countryCode'"
> >>> listValue="'description'"/>
> >>> <% end = System.currentTimeMillis(); %>
> >>> <!-- end cell with webwork components -->
> >>> </tr>
> >>> </table>
> >>> <p>
> >>> Execution Time=<%= ((double)end - start) / 1000.0 %> sec
> >>> </p>
> >>>
> >>> Thanks,
> >>> Kirk Rasmussen
> >>> Lucasfilm Ltd.
> >>>
> >>>
> >>> -------------------------------------------------------
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> >>
> >>
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