How to conclude the test result run on webpagetest.org?

Web Performance Discuss Test Results
1

I have tested my site on webpagetest.org and got following result.
Firstbyte time : 7.245 sec
Fully Load time: 8.622 sec
HOwever when I check Filmstrip view then it shows that few of the elements appear at 3 secs. So I am bit confused that wether I sould consider 3 sec as a performance time or 7.245 sec as Performance time?

Please suggest.

2

Do you have a link to the test? It shouldn’t be possible to have a first byte time longer than the render metrics and if it happens it is a bug in measurement.

3

Following is the link of the test.

4

That shows a first byte of 2.2s and start render of 4.7 seconds. The repeat view has a faster start render than first byte but that’s because the HTML is cached.

5

That’s right but then what does Filmstrip view displays?

6

Filmstrip shows the same for the median run (run #3): https://www.webpagetest.org/video/compare.php?tests=170214_NB_C2P-r%3A3-c%3A0&thumbSize=200&ival=100&end=visual

I didn’t see any first view filmstrips where anything was visible at 3 seconds.