Path: utzoo!attcan!uunet!lll-winken!uwm.edu!zaphod.mps.ohio-state.edu!usc!ucsd!ames!haven!adm!news
From: ssds!tims@uunet.uu.net (Tim Sesow)
Newsgroups: comp.unix.wizards
Subject: Re: Xenix deamon -- why doesn't it die??
Message-ID: <23572@adm.BRL.MIL>
Date: 7 Jun 90 22:50:58 GMT
Sender: news@adm.BRL.MIL
Lines: 24


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.

 
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