Dick,
CFMX Enterprise was showing the below results for me
Jsp=20ms
Cfm=3064ms
consistently. Increasing the loops *Jsp* seemed to perform well..
Cfm started to die off.
I happen to notice one abnormal behaviour as well for *.cfm
loops=1000000
for(x=1;x lte loops;x=x+1)
If you reference the variable like "x lte loops" ,CFMX takes a hefty
8903ms to run the code. I have no idea.. why this is happening.
Anyways.. i think it comes down to the fact that the CFMX compiler
needs to produce more optimized Serlvet/bytecode.
I wonder how the CFMX compiler transforms *.cfm into servlet code?
Does CFMX actually change CFM Code to *Strong type*(int, String, double
etc)?
if this is the case...we shouldnt see the huge performance difference.
Joe
> -----Original Message-----
> From: Dick Applebaum [mailto:[EMAIL PROTECTED]]
> Sent: Tuesday, September 17, 2002 8:27 AM
> To: CF-Talk
> Subject: Re: FW: Jsp Vs Cfm (CFMX) -- Test Code
>
>
> Joe
>
> I didn't try the code, at first, because I can't run jsp under CFMX on
> the Mac.
>
> After your email I tried the comparison using jsp under Tomcat
> jwsdp-1_0-ea2.
>
> The results I got are significant.
>
> The cfm program consistently takes more than 40-80 times longer to run
> than the jsp program (under Tomcat), for example:
>
> cfm: 4110 ms
> jsp: 50 ms
>
> I fiddled with the program to make sure the actual loop was as similar
> as possible and that nothing but the loop was within the timing -- no
> significant affect.
>
> I tried longer loops with similar results.
>
> I changed the test to lt (<) instead of lte (<=), similar results.
>
> I changed the jsp increment x++ to match cfm's x=x+1 -- similar results.
>
> On Mac OS X both Tomcat and CFMX/JRun use the same underlying (Mac OS
> X) JVM (not the one installed with CFMX).
>
> The problem appears to be whatever CFMX uses to generate a Java
> program, is doing it (at least this loop) very inefficiently.
>
> Anyone else have any ideas?
>
> Dick
>
>
>
> > In reply to my Original Post for anybody interested in the Test code
> > Jsp code implemented in a Java class compiled with J2SE(JDK 1.4.1 RC)
> > produced the
> > same results as CFMX Jsp code.
> >
> > <!--- Jsp Code, cut and paste in a *.jsp file. This is for CFMX
> > Enterprise --->
> > <%
> > long loops=1000000,sTime=0,eTime=0,r=0;
> > double i=0;
> > out.println(loops +" Loops<br>");
> > sTime=System.currentTimeMillis();
> > out.println(+sTime+"ms Start Time<br>");
> > for(long x=1;x<=loops;x++){
> > r=r+x;
> > }
> > eTime=System.currentTimeMillis();
> > out.println(r+" Result<br>");
> > out.println(eTime+"ms End Time<br>");
> > out.println((eTime-sTime)+"ms Execution Time<br>");
> > i=(eTime-sTime)/1000;
> > out.println(i+"seconds");
> > %>
> >
> > <!-- Cfm Code, "loops" var in the for statement took more than double
> > the
> > time to run, i am not sure why? -->
> > <cfscript>
> > loops=1000000;z=0;
> > writeOutput(loops & " Loops<br>");
> > sTime=GetTickCount();
> > writeOutput(sTime & "ms Start Time<br>");
> > for(x=1;x lte 1000000;x=x+1)/*<=loops takes more than double the time*/
> > {z=z+x;}
> > eTime=GetTickCount();
> > writeOutput(z & " Result<br>");
> > writeOutput(eTime & "ms End Time<br>");
> > writeOutput(eTime-sTime&"ms Execution Time<br>");
> > writeOutput((eTime-sTime)/1000&"seconds");
> > </cfscript>
> >
> >
> > Joe Eugene
> > Certified Advanced ColdFusion Developer
> >
>
>
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