Study of kernel instrumentation based on process switch in program performance testing

In the software testing, source code instrumentation can be used test code coverage and memory detect, and then collecting testing data during the program dynamic running; but the way can not used to getting process run time. This paper propound kernel task hook instrumentation based on process Switch, for achieving timing relevant index of process during it´s life periods, then analyzed the kernel of Linux2.6 and established instrumentation point for process scout.