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CraigM_17826's avatar
CraigM_17826
Icon for Altostratus rankAltostratus
Apr 05, 2013

GZIP compression (mod_deflate)

Hi everyone,

 

 

I have a question about gzip compression on websites. Our backend servers run Apache and compress the HTTP data, however, it seems from the VIP associated to backend node is unpacking the compressed data and sending it out uncompressed. This is causing long page loads for our website. If the BigIP is uncompressing the data from Apache before sending out to the client is there a way for the BigIP not to do this or to compress it again?

 

 

Regards,

 

 

Craig

 

application delivery
dev
devops
iRules

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  • What_Lies_Bene1's avatar
    What_Lies_Bene1
    Icon for Cirrostratus rankCirrostratus
    Apr 08, 2013
    Craig, this sounds like a simple configuration issue with the profiles associated with your VS. Could you post the VS config along with any HTTP and HTTP Compression profile configs please (suitably redacted of course)?
  • CraigM_17826's avatar
    CraigM_17826
    Icon for Altostratus rankAltostratus
    Apr 10, 2013

    Hi Steve,

     

    we found the issue. Someone (not me for once) added the following code in the iRule for this particular VIP in the HTTP_REQUEST section.

     

    HTTP::header replace "Accept-Encoding" ""

     

    We commented it out and the VIP is now delivering GZIP'd content. Just have to find out why/why this was added. No updates made to our change control documentation and our change control manager was not aware of any submissions for this change. Grrr.

     

     

    Craig