Hi All, Sorry for my previous posting. I think i need to re-frame my question. A) Is it possible to obtain nanosecond/microsecond resolution in select/pselect when the timer tick for 2.6.xx in 1millisec (i386) ?? Doesn't that mean that pselect can only round up the delay specified in nano seconds to the nearest milli second? B) How can i ensure that pselect sleeps for only some micro/nano seconds ?? Thanks in Advance, Indraneel -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/