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From "Steve Finkelstein" ...@stevefink.net>
Subject [users@httpd] Re: Logging mod_deflate compression ratios
Date Fri, 14 Mar 2008 21:32:43 GMT
Well, since I use VirtualHosts, I guess the right thing to do would be
to stuff the CustomLog into a VirtualHost directive, silly me. :P

One last question.  I'm trying to figure out how the ratio system
works for this log config.  For instance:

"GET /javascript/ext/ext-all.js HTTP/1.1" 134241 (26) "Mozilla/5.0
(Macintosh; U; Intel Mac OS X; en-US; rv:1.8.1.12) Gecko/20080201
Firefox/2.0.0.12"

New filesize is 134241 after compression. If the original size is
507857, where is it deriving (26) from? What does the 'ratio' signify?
It's not percentage in savings, clearly.

/sf

On 3/14/08, Steve Finkelstein <sf@stevefink.net> wrote:
> Hi all,
>
>  I'm trying to log actual ratios of Compression that mod_deflate is
>  responsible for handling. I've followed the guidelines on Apache's
>  site and have the following directives setup:
>
>  DeflateFilterNote Input instream
>  DeflateFilterNote Output outstream
>  DeflateFilterNote Ratio ratio
>
>  SetOutputFilter DEFLATE
>  SetEnvIfNoCase Request_URI \.(?:gif|jpe?g|png)$ no-gzip dont-vary
>  Header append Vary User-Agent env=!dont-vary
>  DeflateCompressionLevel 9
>
>  LogFormat '"%r" %{outstream}n/%{instream}n (%{ratio}n%%)' deflate
>  CustomLog logs/deflate_log deflate
>
>
>  After restarting Apache, I unfortunately only see the following in deflate_log:
>
>  argon logs # cat deflate_log
>  "GET / HTTP/1.0" -/- (-%)
>  "GET / HTTP/1.0" -/- (-%)
>  "GET / HTTP/1.0" -/- (-%)
>  "GET / HTTP/1.0" -/- (-%)
>  "GET / HTTP/1.0" -/- (-%)
>  "GET / HTTP/1.0" -/- (-%)
>
>
>  etc.
>
>  Any idea on what I'm possibly doing wrong?
>
>
>  /sf
>

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