Forum Discussion

Mia_27938's avatar
Mia_27938
Icon for Nimbostratus rankNimbostratus
Feb 12, 2015

Why the images is compressed?

Hello All, I apply the compression profile to a VS. As far as I know, because the image was already compressed itself, they don't have to be compressed. Right? Hmm. However the images are compr...
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NikhilB's avatar
NikhilB
Icon for Employee rankEmployee
Feb 12, 2015

What happens when you dont apply these profiles to the VS?

 

Do you also have an acceleration profile applied to your VS. Are these compressed files/images applied to the ramcache?

 

If so, you can you delete the cache setting entries: delete ltm profile ramcache

 

Mia_27938's avatar
Mia_27938
Icon for Nimbostratus rankNimbostratus
Feb 12, 2015
Hi NikhilB, Thank you for your reply. I do not use the ramcache profile. To display the following stats, I typed the command, "show ltm profile http-compression httpcompression httpcompression_test_1" Ltm::HTTP Compression Profile: httpcompression Content Type Compression (bytes) Pre-Compress Post-Compress HTML 495.7M 102.0M CSS 8.6M 1.7M JavaScript 0 0 XML 0 0 SGML 0 0 Plain 0 0 Octet Stream 138.7K 115.5K Images 11.1M 10.2M Video Files 0 0 Audio Files 0 0 Other 12.9M 5.4M Total 528.6M 119.5M NULL-Compress 0 0 Compression Ratio (%) 77.3 whenever I refresh the command, "show ltm profile http-compression httpcompression httpcompression_test_1", the counts of Images is increasing. And I have been checked the HTTP response header for GIF files applied the VS with httpcompression_test_1 profile or httpcompression_test_2. As a results, the http response headers for GIF image files have Content-Encoding:gzip. This mean that the GIF images is compressed. Right? Thanks again for being with me.