I would be grateful to you if you could elaborate a bit about the grading.
In other words, if my sites gets 91% and get a BADABX grading then i would like to know (e.g http://www.webpagetest.org/result/111030_7N_e959b214704ac57108b0dd2a92911263/)
A. How are D, B etc calculated?
Regarding the first parameter (First Byte Time), i have found one of your responses that goes like
<250ms => A
250-350 => B
350-450 => C
Can you provide info about the other ones as well e.g for caching:
<100KB then A, 100-200 KB then B etc or 1-3 non-cached date then A, if 4-6 then B etc
B. What effect will any recommendation that i apply have?
E.g if i have D for caching, if i cache 1 more file will it become C or it depends on the size of the file or other parameters? This is quite likely related to previous question.
I have searched the forum, the https://sites.google.com/a/webpagetest.org/docs/private-instances/releases/webpagetest-2-4 and online but no luck.
Thanks in advance.