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I am the founder and CEO of Catchpoint. The Catchpoint vision is to provide the best IT analytics & intelligence to help companies improve their end user performance, and keep an eye on their infrastructure and vendors. Before Catchpoint, I spent 10+ years at DoubleClick and Google, where I was responsible for Quality of Services, buying, building, deploying and using various internal and external monitoring solutions to keep an eye on the DART infrastructure delivering billions of transactions a day using throusands of servers, routers . . . HP Openview, Sitescope, SMARTS, Adlex, Coradiant, Gomez & Keynote are some of the products we used. Thus the interest of building something in this space! Mehdi is a DZone MVB and is not an employee of DZone and has posted 46 posts at DZone. You can read more from them at their website. View Full User Profile

The State of Web Performance: 2012 Holiday Shopping Winners

11.19.2012
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 The biggest online shopping season to date is about to start next week. It is one of the most important events for a retailer and probably the most stressful period for their IT operations.

It is also the time where web performance speed and availability might decide who the money goes to. As a result I decided to take a quick look at the performance of the homepages of top 50 online retailers. I wanted to take a closer look at how ready they are for this event and how their pages have changed since last season. I compared several metrics from Nov 1 2011 to Dec 31 2011 vs. Nov 1 2012 to Nov 15 2012 (compared averages from each time frame).

Response Time (Time to get the HTML file)

Delta Response Time 2011 - 2012

Delta Response Time 2011 – 2012

Render Start Time (When we stopped looking at a blank screen):

Delta Render Start Time 2011-2012

Delta Render Start Time 2011-2012

Document Complete / Onload Event:

Delta Doc Complete Time 2011-2012

Delta Doc Complete Time 2011-2012

Web Page Response (when the page was loaded):

Delta Web Page Response Time 2011-2012

Delta Web Page Response Time 2011-2012

Total Downloaded Bytes:

Delta Total Downloaded Bytes 2011-2012

Delta Total Downloaded Bytes 2011-2012

Number of Hosts on a page:

Delta # Hosts on the Page 2011-2012

Delta # Hosts on the Page 2011-2012

Number of Requests:

Delta # Items on the Page 2011-2012

Delta # Items on the Page 2011-2012

Correlation:

Correlation between Deltas

Correlation between Deltas

What is clear from this chart is for the homepages that saw a degradation in Document Complete time, there were increases in number of hosts, items, total size download required by the page.

Conclusion:

Some of the sites have experienced amazing improvements in speed which is clearly due to implementation of WPO in various categories (bytes, hosts, requests, speed…) But the number of sites that have slowed down, got more bloated with content from more hosts has increased. – Updated: Strangeloop own take on the size and the increase in number of objects.

I hope that some of the slower companies have a secret home page that is more friendly to the online shopper come Black Friday.

Good luck.
Mehdi – Catchpoint

ps: you can download all the images (images-blog-deltas).

Published at DZone with permission of Mehdi Daoudi, author and DZone MVB. (source)

(Note: Opinions expressed in this article and its replies are the opinions of their respective authors and not those of DZone, Inc.)