According to data from Compuware, overall traffic was up on Black Friday compared with Thanksgiving, and mobile devices were a key component to increased retailer traffic. But results show that many retailers were not totally prepared for the spikes in mobile traffic on Black Friday, as users experienced page response times around eight seconds on both iPads and iPhones.

“Our data shows that an average page response time over 6 seconds increases page abandonment rate from 12% to over 20%, which will significantly impact many retailers revenue this holiday season,” said Steven Dykstra of Compuware APM’s Benchmarks Division.

Here are some stats surrounding Black Friday traffic:

Black Friday: 12:00 am – 12:00 pm
• traffic up 37% over Thanksgiving day
• iPad traffic up 31% over Thanksgiving
• iPhone traffic up 40% over Thanksgiving
• iPad users saw 8.3 second page response times
• iPhone users saw 7.4 second page response times

Black Friday: 12:00 pm – 6:00 pm
• traffic slowed slightly but still up 34% over Thanksgiving
• iPad traffic up 36%
• iPhone traffic up 29%
• iPad users saw 8.5 second page response times
• iPhone users saw 8.6 second page response times

Black Friday: 6:00 pm – 12:00 pm
• traffic remained strong at nearly the same levels as Black Friday afternoon, but up 96% compared to the same time period on Thanksgiving
• iPad traffic up 90%
• iPhone traffic up 117% respectively from Thanksgiving
• iPad traffic outpaced iPhone 72% to 28%
• iPad users saw 8.6 second page response times
• iPhone users saw 8.15 second page response times

The average page load time (response time) for mobile web sites across the top 50 US retailers during Black Friday was 10.51 seconds. The top five retailers on Black Friday for mobile site performance, ranked by response time, availability and consistency, were:

1. Blockbuster
2. Office Depot
3. Rakuten
4. JC Penney
5. HSN

The top five retailers on Black Friday for mobile transaction performance, ranked by the same measures, were:

1. CDW
2. Grainger
3. Office Depot
4. Amazon
5. Staples

The top five retailers on Black Friday for web home page performance, ranked by the same measures, were:

1. Costco
2. Apple
3. Dell
4. Office Max
5. JC Penney