In the last episode (Mar 26), Andrew said:
> On Tue, 26 Mar 2002, Volker Stolz wrote:
> > Under FreeBSD system calls are currently never preempted, therefore
> > non- realtime processes can starve realtime processes, or idletime
> > processes can starve normal priority processes.
>
> Even so an idprio process can't be worse than a normal process.
Sure it can, if the idprio process has locked a vnode trying to update
the contents of a file, and another non-idprio process starts consuming
100% CPU. The idprio process never gets a chance to run again, and if
that vnode happened to be an important one (say for /), you may not be
able to kill the other process without rebooting.
--
Dan Nelson
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