Hi!
I have tested my site.
Here’s are my test result.
[url=http://www.webpagetest.org/result/150315_VC_K1E/1/details/]http://www.webpagetest.org/result/150315_VC_K1E/1/details/[/url]
It has really long gap before #19 request, so total loading time is above 20s.
but if I test again immediately, it’s loading time is much smaller.
If I test again much later, first test has a huge time gap always, only first.
I don’t know why these time gap occurred.