The phrase "feverish pace" means doing something quickly and with great intensity, like rushing or working with a lot of energy and excitement. Full definition
Real work has extended periods of inactivity or dull grunt work, as opposed to the exciting, feverish pace of a computer programmer in a movie (I'm looking at you, «The Social Network» - programming should not look that cool). (inc.com)
The reason why e-reader sales are down is because people aren't upgrading them with the same feverish pace as they do smartphones and tablets. (goodereader.com)
It's the industry's largest segment, and automakers are responding to demand with new and updated products at an increasingly feverish pace. (topspeed.com)