usleep will sleep until the next tick if you give is a value < 1 tick. The default HZ setting on FreeBSD is 100, giving you a tick of 10ms. I'm not sure why you are seeing it sleep for 2 ticks instead of one, however.
Try building a kernel with an HZ of 1000 and see what happens. Warner To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-hackers" in the body of the message
