Hi, This seems like an interesting article, describeing a new kernel service/application in 2.6.
http://www-106.ibm.com/developerworks/library/l-oprof.html?ca=dnt-441 It's called OProfiler. "OProfile can help you identify issues such as loop unrolling, poor cache utilization, inefficient type conversion and redundant operations, branch mispredictions, and so on." Just thought I'd pass it on. /Robert