[bzcomputers]

Noticed all the javascript was not being gzipped.

Seems "application/x-javascript" is not doing it. Need to add "application/javascript" to the mod_deflate output filters. After adding that all vBulletin javascript is being reporting as compressed.


Edit Line:

AddOutputFilterByType DEFLATE text/css application/x-javascript text/html text/richtext image/svg+xml text/plain text/xsd text/xsl text/xml image/x-icon

To Read:

AddOutputFilterByType DEFLATE text/css application/x-javascript application/javascript text/html text/richtext image/svg+xml text/plain text/xsd text/xsl text/xml image/x-icon

Before Change:

Use gzip compression for transferring compressable responses: 77/100

286.3 KB total in compressible text, target size = 220.5 KB - potential savings = 65.8 KB
FAILED - (51.1 KB, compressed = 15.2 KB - savings of 35.9 KB) - http://www.XXX.com/forum/clientscript/vbulletin-core.js?v=420
FAILED - (14.4 KB, compressed = 3.8 KB - savings of 10.6 KB) - http://www.XXX.com/forum/clientscript/vbulletin_overlay.js?v=420
FAILED - (12.5 KB, compressed = 3.6 KB - savings of 8.9 KB) - http://www.XXX.com/forum/clientscript/vbulletin_lightbox.js?v=420
FAILED - (7.2 KB, compressed = 2.5 KB - savings of 4.7 KB) - http://www.XXX.com/forum/vbseo/resources/scripts/vbseo_ui.js?v=a4
FAILED - (5.7 KB, compressed = 2.3 KB - savings of 3.4 KB) - http://www.XXX.com/forum/clientscript/vbulletin_md5.js?v=420
FAILED - (4.4 KB, compressed = 2.0 KB - savings of2.4 KB) - http://www.XXX.com/forum/clientscript/vbulletin_cms.js?v=420

After Change:

Use gzip compression for transferring compressable responses: 100/100

220.5 KB total in compressible text, target size = 220.5 KB - potential savings = 0.0 KB

That is a savings of almost 70% for javascript transfers on a default cms page.


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Edit: Any reason you are not also recommending the caching of static javascript?