idle time in the page loading

[linx...@gmail.com]

Hi I met an problem when use Chrome Developer Tool to analyze some test site.

I tested some mirrored site by Network Tab of Google Chrome dev tool to get the page loading time. However we found the result fluctuation is too large. 

Then I use Timeline tab to see if can find some hint.

The test site is very simple, no JS no CSS , just loading 100 image files. 

• Client : Chrome, window 7
  

   as the bible https://developers.google.com/chrome-developer-tools/docs/timeline#frames_mode indicated, I disable cache and used incognito mode.

• Server : Nginx 
  
• Issue : The browser delayed to load the last object
• the file seems randomly changes
• not appear every time, if occurred the whole page loading time will be extremely long, 2 or 3 times longer than the normal case.
• at that period the CPU is not busy
• I checked the server log which shows that every file loaded normally (loading time within 1 or 2ms)

I have considered if the GPU is the bottleneck, and minimize the browser window size, however nothing changed.

 I uploaded the timeline data and the screen capture here.

 Wish to get some hints here.

Best regards,

[Amin Krb]

Hi

I have more or less the same issue. in my case chrome waits for 25 seconds before start loading the page and then it loads it in a second. I am not sure why chrome waits that long ! 

Thanks

Amin