Hi, I have set the HZ constant to 1024 to increase the select resulution. But the results of my measurements are not as expected. I have a cyclical task (using select for timing) that inverts a parallel port bit in each cycle. I measure the high time with an oszillograph. Here are my results: 15ms cycle: Everything as expected. The jitter is around 1ms (corresponds to the 1000Hz). 10ms cycle: The cycle is either 10ms or 20ms. No values between. 5ms cycle: The cycle is either 10ms or 15ms. No values between. Do you have any explanations for this behaviour? Is there a better way to increase to resolution of the select call? Do I have to modify any parameters in the scheduler code? Peter P.S: I found that the HZ constant is used in the tcp code. Do I have to expect any errors coming from the changed HZ value? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
