It depends. Stress testing tools can be invaluable for finding the breaking point for a web application. But even the best tool and test plan won't fix the problem.

The purpose of stress and load testing is to discover. Measuring response time and errors relative to user volume can point to solutions; however, the developer(s) must engage in performance tuning to eliminate bottlenecks or otherwise improve throughput.

Hurricane Ike reached up to Ohio with wind speeds touching 70mph causing widespread damage in September, 2008. Some places didn't have power for 7 days.

Hurricane Ike uprooted even the strongest of the trees in its trail. The picture shows an uprooted tree aftermath Ike in Dayton, Ohio in September, 2008.

Hurricane Ike which not only hit gulf coast but also central parts of the US, caused large scale destruction in Louisville, KY in September, 2008.

A post office parking lot with delivery vehicles, in downtown Mobile, Alabama is under water due to flooding caused by Hurricane Katrina in August, 2005.

Fierce waves from the Gulf Coast make way into Beach Blvd. and crash against stop sign in St. Louis, Mississippi.

Houses were reduced to rubble after Hurricane Katrina hit the City of New Orleans, Louisiana in August, 2005; the hurricane which caused one of the most devastating damages ever in the history of the US.