First Byte Time (back-end processing): NA
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01-15-2015, 01:22 AM
Post: #1
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First Byte Time (back-end processing): NA
What does this mean? I normally get a letter but for some of my pages I am getting
First Byte Time (back-end processing): NA I googled it an came up with nothing. |
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01-16-2015, 12:56 AM
Post: #2
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RE: First Byte Time (back-end processing): NA
Do you have an example test? N/A just means that WebPagetest didn't think it could calculate a grade but I'd like to see why.
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01-16-2015, 01:11 AM
(This post was last modified: 01-16-2015 01:12 AM by julia@references-etc.com.)
Post: #3
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RE: First Byte Time (back-end processing): NA
Hi thanks for you for your reply. I have tested this same page numerous times and keep getting the same result.
Here is the test http://www.webpagetest.org/result/150115_2R_T6C/ the page being testing is https://references-etc.com/online-drivin...ord-detail |
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01-21-2015, 02:26 AM
Post: #4
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RE: First Byte Time (back-end processing): NA
Looks like it's an issue with Chrome SSL testing (specifically Chrome's reporting of the timings) where the beginning of the test gets clipped so I don't have a TTFB. It's caused by some internal races in Chrome and dev tools doesn't record accurate times in this case. It's on my list to see if I can either fix in Chrome or find a better way to capture the data (likely the latter).
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