I used to trust Google Chrome browser and think it will never lie. Today's experience changed my perception.
I am testing an application with a web component. When I clicked on a button, it felt the page is a little slow, so I opened the Chrome developer console. It showed that downloading the content (in the JSON format) took 3 seconds. I tried it a couple of times and it's always about 3 seconds.
This worried me since I really don't expect it to take that long! So I opened my wireshark to monitor the traffic between my browser and the web server. To my surprise, the entire HTTP response completed within 1.08 seconds.
I am using Google Chrome "Version 40.0.2214.111 (64-bit)" on my Ubuntu 12.04 PC.
So I fired Firefox and ran the same test, it shows about 1.08 seconds which is very consistent with my wireshark reading:
We all heard the famous quote "Trust but verify", it's more true when it comes to browser. Don't forget wireshark when you try to "verify"!