On Sun, Nov 20, 2005 at 09:22:41AM -0500, Greg Stark wrote: > I don't think that's true. If the syscall was preemptable then it wouldn't > show up under "iowait", but rather "idle". The time spent in iowait is time in > uninterruptable sleeps where no other process can be scheduled. You are confusing userspace with kernel space. When a process is stuck in uninterruptable sleep, it means _that process_ can't be interrupted (say, by a signal). The kernel can preempt it without problems. /* Steinar */ -- Homepage: http://www.sesse.net/ ---------------------------(end of broadcast)--------------------------- TIP 6: explain analyze is your friend
