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 Topic: mod_deflate woes |
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| Author |
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drdave
Joined: 10 Aug 2009
Posts: 1
Location: Pennsylvania
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 Posted: Mon 10 Aug '09 23:45 Post subject: mod_deflate woes |
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I have two Apache servers: a development server on WinXP (just upgraded today to 2.2.13) and a production server on Linux (2.2.10).
I dynamically create large sets of essentially table data through web service calls and the load time is excessive. Therefore I want to use compression. I have activated mod_deflate on both systems and used the same configuration for both:
| Code: | # Only compress specified content type
<Location />
<IfModule mod_deflate.c>
# compress content with type html, text, javascript and css
AddOutputFilterByType DEFLATE text/html text/plain text/css text/javascript
<IfModule mod_headers.c>
# properly handle requests coming from behind proxies
Header append Vary User-Agent
</IfModule>
</IfModule>
</Location>
# deflate.log, log compression ratio on each request
<IfModule mod_deflate.c>
DeflateFilterNote Input instream
DeflateFilterNote Output outstream
DeflateFilterNote Ratio ratio
LogFormat '"%r" %{outstream}n/%{instream}n (%{ratio}n%%)' deflate
CustomLog logs/deflate.log deflate
</IfModule>
# Properly handle old browsers that do not support compression
<IfModule mod_deflate.c>
BrowserMatch ^Mozilla/4 gzip-only-text/html
BrowserMatch ^Mozilla/4\.0[678] no-gzip
BrowserMatch \bMSIE !no-gzip !gzip-only-text/html
</IfModule>
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Now it gets interesting:
WOE NUMBER 1:
According to Firebug, I am getting gzip compression on HTML files on the Linux server, but not on the Windows server. (The Windows server is running Apache as a service available to all users. In a different forum, I found a post with a similar issue, but no response.)
WOE NUMBER 2:
Both systems created a deflate.log in the logs directory, but both are totally empty. I am almost certain that at least some files are being compressed in the Linux environment, but I get no information in the log.
WOE NUMBER 3:
For JavaScript, I am totally befuddled. I have a .js file that is included with..
| Code: | | <script type="text/javascript" src="....."></script> |
On Linux, the Response Header reported by Firebug:
Server: Apache/2.2.10 (SentOS)
Content-Type: application/x-javascript (<== ? different than the <script tag!!)
Needless to say, it is not "text/javascript" and is therefore not compressed.
On WinXP, the Response Header reported by Firebug:
Server: Apache-Coyote/1.1 (<==WHAT? This is Apache/2.2.13!)
Content-Type: text/javascript
SO:
A: No compression from WinXP installation
B: Nothing in the log file
C: Weird things with .js files
Any suggestions will be greatly appreciated!!
ddsp |
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James Blond
Moderator
Joined: 19 Jan 2006
Posts: 7306
Location: Germany, Next to Hamburg
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| Posted: Thu 13 Aug '09 20:11 Post subject: |
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My working config under Windows 2003
| Code: |
SetOutputFilter DEFLATE
DeflateCompressionLevel 9
DeflateFilterNote Input instream
DeflateFilterNote Output outstream
DeflateFilterNote Ratio ratio
LogFormat '"%r" %{outstream}n/%{instream}n (%{ratio}n%%)' deflate
CustomLog /server2/logs/deflate.log deflate
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