Hi. We are simulating air interface of GPRS on LAN. A TDMA(time division multiple access) frame duration is 40ms. Each TDMA frame consists of 24 timeslots. Each timeslot is of 40/24 ms (i.e 1.66666.......ms) . To know what current timeslot it is, we need a timer interrupt after every 1.6666... ms . Since we are implementing this on LAN, minor jitters once in a while can be tolerated (say 0.2 ms more or less once a while would be OK). As of now, we are modifying the HZ value in param.h to 600. This gives us a CPU tick of 1.6666.... ms. (i.e 1/600sec). I want to know if it would affect the perfomance of the CPU. Is there a better way to achieve the granularity of 1.666...ms . Would the UTIME patch be a better way from performance or any other point of view than this method? With Regards, Niraj Punmia - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/