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HomeHomeUsing DNN Platf...Using DNN Platf...Administration ...Administration ...IIS Compression vs DNN CompressionIIS Compression vs DNN Compression
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1/28/2007 3:10 PM
 
John Mitchell


www.snapsis.com
Joined: 4/18/2003
Posts: 3987

toptalent wrote
So if I have control over IIS (am on dedicated server) and can configure the compression (file types etc) properly, it should be more efficient than the DNN compression? Am I likely to run into any compatibility issues?

Yes, and Yes.

But you should be able to overcome any issues since you have full control.

DotNetNuke Modules from Snapsis.com
 
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1/28/2007 9:30 PM
 
ROB AX

Joined: 9/3/2004
Posts: 2185

John Mitchell wrote
You can use a tool like this one, or Fiddler to check your page and see which one gives better results.

Thanks for the info John,

Now, that page for checking compression is way cool

That's the first time I've been able to see what's really happening. I threw my biggest homepage at it with Deflate set to 5 the size came from 65kb down to 18kb - -71% compression. That's massive! Another homepage went from 54kb to 22kb - 60% compression.

I'm betting that whitespace will make up a fair bit of the slack, but I keep that on for modules that have trouble with it.

I'm betting a lot o
 
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1/28/2007 10:42 PM
 
John Mitchell


www.snapsis.com
Joined: 4/18/2003
Posts: 3987

 

Yes, those are normal compression ratios with text/html.  So did you get better compression with Deflate or Gzip?  Pretty close to the same?

You can do your own checking, but what you will find is that adding whitespace removal does not reduce the size that much more.
This is because compression of white space is a good white space remover all by itself.  Having whitspace can actually help the compression algorithm.

DotNetNuke Modules from Snapsis.com
 
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1/28/2007 11:29 PM
 
ROB AX

Joined: 9/3/2004
Posts: 2185

I had just then set it all  up according to the settings declic was reporting were working in the other thread. It was working for me as well so I left it as-is. .. that being Deflate at 5. Turned out I'd also enabled the Whitespace filter beforehand, so everything was on.

I'll go and report it's working in the other thread. If it starts working properly with both compression types in 442 then I'll run some tests with them to see which is best.
 
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1/29/2007 2:38 AM
 
Steinar Svendsen

Joined: 6/28/2003
Posts: 63

Hi,

I had about 4-5% better compression without the whitespace filter, and experienced no difference between gzip and deflate. The total compression varies between 75% and 85%.

/Steinar
 
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