Guys, Till around some version of kernel 2.5, timer interrupts of 100Hz was being used. But from 2.6 onwards the kernel will have a default frequency of 1000hz. Please read the following article for more info on what Robert Love has to say ... http://kerneltrap.org/node.php?id=464 There is also a paper presented in SIGMETRICS that evaluates how increase in interrupt frequency helps soft-real time applications... -p -- Binary/unsupported file stripped by Ecartis -- -- Type: application/x-zip-compressed -- File: p172-etsion.zip