A Quick Study Of Response Time

Downtime Monkey now logs more than 4 million website responses each day. I ran some analysis on these to see how fast websites respond in practice.

I collected 1 million response times from real websites. Half a million from Pro plans and half a million from Free plans.

I then split these into groups: 0 to 1 second, 1 to 2 seconds, 2 to 3 seconds etc. and then counted the number in each group. For responses slower than 17 seconds a site is considered down:

The majority of sites responded within a second, so I took another sample and broke the fastest sites into groups of a quarter of a second:

I also crunched the numbers to find the average response time for all sites, the top 10%, the bottom 10% and how the percentage of sites are down at a given moment. You can see these in the blog post:

https://downtimemonkey.com/blog/a-quick-study-of-response-time.php