Well, Winrunner is only used for functional testing for performance testing you can use the following tools:
JMeter.Taurus.Locust.Fiddler with BlackWidow and Watcher.nGrinder.Gatling.Siege.Bees with Machine Guns.
Regression testing is usually performed while providing qa testing services after verification of newly implemented feature, changes or new functionality.
Top software testing companies usually execute regression tests in…"
Regression testing software is a software series that is intended to correct isolate problems that have arisen with software on the hard drive that was working accurate, yet suddenly developed a difficulty.
Basically, the software works…"