ASP Performance

[Roland Hall]

I've read numerous articles, more than I can count, on ASP performance. I
see conflicting information so I did some tests on my own.

getstring and getrows are actually faster than recordset looping.

However, I've read in looping that Do While...Loop is the fastest and
For...Next the slowest but my tests prove otherwise.

I've tested:
Do...Loop
Do While...Loop
Do Until...Loop
While...Wend
For...Next

I didn't think I could do an accurate test with For...Each unless I used a
collection or an array.

I also see conflicting information on string concatenation and
Response.Write

Is this better?

dim str
str = str & "this "
str = str & "that "
str = str & "this and that"
Response.Write str

or this?

dim str
Response.Write "this "
Response.Write "that "
Response.Write "this and that"

I've also seen to speed the last one up:

with Response
.Write "this "
.Write "that "
.Write "this and that"
end with

Are there reliable performance tests that can be reviewed?
Does it vary between languages? ASP:VBscript, ASP:JScript, C/C++, Delphi,
VB, C#

--
Roland Hall
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[Dave Anderson]

Roland Hall wrote:

It seems you already know the answer to your question.

It shouldn't because I don't. I'm posing these questions to gain
knowledge because I may not have considered some variables and there
are people here a lot better at this than I am.

Your question: "How can I take adavantage of getRows with iteration
where I want cosmetic differences in the results?"

Your answer: "If is use getrows and want every other background a
different color, I have use a MOD or something..."

As I said, you already know the answer to your question. If you are
iterating through the array produced by GetRows(), you can use (rownum Mod
2). What more were you expecting?

--
Dave Anderson

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question is worth asking, it's worth posting.

[Roland Hall]

"Dave Anderson" wrote in message
news:eW******** *****@TK2MSFTNG P14.phx.gbl...
: Roland Hall wrote:
: >> It seems you already know the answer to your question.
: >
: > It shouldn't because I don't. I'm posing these questions to gain
: > knowledge because I may not have considered some variables and there
: > are people here a lot better at this than I am.
:
: Your question: "How can I take adavantage of getRows with iteration
: where I want cosmetic differences in the results?"
:
: Your answer: "If is use getrows and want every other background a
: different color, I have use a MOD or something..."
:
: As I said, you already know the answer to your question. If you are
: iterating through the array produced by GetRows(), you can use (rownum Mod
: 2). What more were you expecting?

I wasn't doing it as you were with a dynamic class name. I had a
conditional in the middle of it. Your method eliminates the conditional and
removes the performance hit I was referring to.

--
Roland Hall
/* This information is distributed in the hope that it will be useful, but
without any warranty; without even the implied warranty of merchantability
or fitness for a particular purpose. */
Technet Script Center - http://www.microsoft.com/technet/scriptcenter/
WSH 5.6 Documentation - http://msdn.microsoft.com/downloads/list/webdev.asp
MSDN Library - http://msdn.microsoft.com/library/default.asp