root@lec.UUCP (Super user) (06/03/90)
Running Xenix 386 and recently installed an Irwin tape backup unit. Have noticed as many as 3 deamons running at the same time for the tape unit. Can't seem to kill any or all of them. It's not really necessary to kill them but I'm more curious about why they don't die. Does one restart the other if one dies .. the pid remains the same after a kill. Please enlighten me.
tims@uunet.uu.net (Tim Sesow) (06/08/90)
In response to the following: > Running Xenix 386 and recently installed an Irwin tape backup >unit. Have noticed as many as 3 deamons running at the same time for >the tape unit. Can't seem to kill any or all of them. It's not really >necessary to kill them but I'm more curious about why they don't die. >Does one restart the other if one dies .. the pid remains the same after >a kill. Please enlighten me. > The deamons are probably waiting for an event in the kernel (kernel sleep) at a priority that does not allow a SIG to terminate the operation in progress. A device driver can put a process to sleep at a driver-selected priority and if that number if too high (or too low? I forget), there is no way to kill the process until the operation completes. +--------------------------+---------------------------------+ | Tim Sesow | (303) 798-5520 | | SSDS, Inc. | Fax: (303) 795-9451 | | 1101 West Mineral Avenue| | | Suite 200 |Internet: ssds!tims@uunet.uu.net| | Littleton, CO 80120 |UUCP: ..!uunet!ssds!tims | +--------------------------+---------------------------------+