CFC Performance Overhead

Hi All,
I was trying to measure the performance overhead of using a CFC versus using a
plain cfinclude, and I have come up with some really strange results. I hope
someone can throw a light on what is going on.
So basically I made 3 files.
1. testCFC.cfm: This is the file which I run and which either contains a call
to the compTest.cfc or includes the compTest.cfm
2. compTest.cfm: This is the included file and contains a simple cfloop doing
something
3. compTest.cfc: This is the cfc which contains the same simple cfloop doing
something.

I measured the tickcount before the cfc call and after the cfc had returned
and I got 210 ms.
When I did the cfinclude I got 150 ms. So it seems that the CFC overhead was
33%. But that seemed unreasonably high, so I measured the time taken to run the
loop inside the cfc and that was also 210 ms. Of something is amiss here
because the time taken to run the loop should be 150 ms (as in the simple
cfinclude).

Am I doing something wring here??

The code for all the files is attached. I would really appreciate if someone
could throw a light into this. And any inputs on the performance overheads of
using CFC's would be very welcome.

Thanks a lot,
SS

Attach Code

testCFC.cfm:

<cfset application.compTest = createObject("component","compTest")>
<cfset t1 = gettickcount()>
<cfset looptimes = application.compTest.doSomething()>
<!---cfinclude template="compTest.cfm"--->
<cfset timetaken = gettickcount() - t1>
<cfoutput>#timetaken#</cfoutput>
<cfoutput><br/>#looptimes#</cfoutput>

compTest.cfc:

<cfcomponent>
<cffunction name="doSomething">
<cfset looptick = gettickcount()>
<cfloop from="1" to="100000" index="i">
<cfset x = i*2 + 1>
</cfloop>
<cfset looptime = gettickcount() - looptick>
<cfreturn looptime>
</cffunction>
</cfcomponent>

compTest.cfm:

<cfloop from="1" to="100000" index="i">
<cfset x = i*2 + 1>
</cfloop>

i think you need to var your variables inside the function otherwise they
become part of the application scope which is not what you want.

So your cfc should look like this:

<cfcomponent>
<cffunction name="doSomething">
<cfset var i = "">
<cfset var x = "">
<cfset var looptick = "">
<cfset var looptime = "">

<cfset looptick = gettickcount()>
<cfloop from="1" to="100000" index="i">
<cfset x = i*2 + 1>
</cfloop>

<cfset looptime = gettickcount() - looptick>

<cfreturn looptime>
</cffunction>
</cfcomponent>

Run this again and see what it gives you.