On Fri, Apr 24, 2009 at 10:39 PM, yogeshwar sonawane <[email protected]> wrote: > Hi all, > > I am running one parallel program over network. But in meantime, > sometimes some processes on some nodes gets stuck & then show status > as 'D' is ps -aex output. > I am not able to kill that process. I need to reboot the node. i > searched in books & net, that such state is uninterruptible > sleep/waiting state. > > What can be the reason for going into such state ? Whether any I/O > activity will be the cause for this ? > Can somebody give more info about this ?
most likely, because when that process dives into kernel space, it issues codes that execute sleep_uninterruptible(). And, as you could probably guess, waiting for I/O event (in some cases, not necessarily in all case) is an example of uninterruptible event. regards, Mulyadi. -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to [email protected] Please read the FAQ at http://kernelnewbies.org/FAQ
