pagesped filters not working as expected

[soaringeagle]

having trouble getting pagespeed filters to work correctly
every variation i have tried has not affected pagespeed insights score
currently have this

ModPagespeed on
ModPagespeedFileCachePath /tmp/lshttpd/pagespeed
ModPagespeedEnableFilters rewrite_css,combine_css
ModPagespeedEnableFilters recompress_images
ModPagespeedEnableFilters convert_png_to_jpeg,convert_jpeg_to_webp
ModPagespeedEnableFilters collapse_whitespace,remove_comment

 

[mistwang]

You need to check if any of those filters is working or not, create a simple test page by adding whitespeed and comments, check the final page see if those are removed as expected.