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  • Subject: Re: Ready to scrap an AS/400
  • From: "Peter Dow" <pcdow@xxxxxxxxx>
  • Date: Mon, 24 Jul 2000 13:04:55 -0700

----- Original Message -----
From: <pytel@us.ibm.com>
> of course it is unpleasant when application locks up the system.
> But is operating system always to blame ?

imho, yes. Isn't the operating system supposed to be in control? And parcel
out resources to various applications? Should it allow any application to
simply take over *all* resources, so that an operator can't even end the
application?

> Just the other day I've had a problem with Unix application.
> It had some bug which led it it to consume all paging space available > on
system.
> Unix sent a message to console - "Paging space low" and quietly died.
> Was it a Unix fault - or application fault ?

Sounds like a Unix fault to me. Why couldn't it simply stop giving resources
to all applications until something is done about the problem by the
operator/user? Why do you think it good form for the os to simply die?


> Shall I scrap Unix box ?

The hardware isn't the problem, it's the operating system. Fix it. Get it
fixed. If an application can crash the operating system, isn't that as big a
problem as any virus?


These are the kinds of problems that get me very irate at Windoze. When I
switched to NT at home, it was a huge relief to have a task manager that 99%
of the time allows me to zap offending applications. Why can't OS/400 and
Unix do that much?

Don't get me wrong, I think the AS/400 is great hardware and OS/400 is a
really good o/s. The only time I've heard of an application taking over like
that is when someone set their interactive priority to 1. Actually, this
sounds a lot like what Richard Jackson was investigating -- low priority
jobs interfering with higher priority jobs. Can't someone keep a priority 10
job going that can shut down Domino when it locks up the system?

Peter Dow
Dow Software Services, Inc.
909 425-0194 voice
909 425-0196 fax





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