Re: My Vintage Dream PC

A lot of real company wanna bes.

of=20

don't solve=20

to an

the

trying

useful

different

simplest

on

from

NT.

to

Not to mention their persistent willingness to let almost any application mess with system internals. Makes my skin crawl.

busses

core

that

And just exactly how do you decide which CPU is faulty?

No. New backup written on fresh media, per your description. Restore would be a different case.

you

and

all

Xray uses quite low energy fields. Never had any problems with my mobile for example while it has gone trough xray.

In satellites the energy of particles is much higher and they still work just fine. It's just a question of design and compromises between cost and reliability, nothing comes for free.

The EMC requirements are not defined by kiddies but standards organizations. And the tests must be made in accredited labs to get the paperwork done and permit to sell the products. Especially for telecoms equipment the limits are not always easy to achieve.

The kiddie might have been someone without only knowledge how to connect the stove, and read from manual ready made answers, and imagine somethingg if the manual has no answer. You don't put real engineers to call to customers. They are shielded by many layers of customer service and escalation protocols.

Was this the house you had all kinds of wacky problems with the electical connections. Maybe the stove was just not correctly connected (grounded for example), and the filtering did not work.

--Kim

Single user, single owner systems are the most common ones, but they still use multiple tasks in parallel. But this is old thread, you just don't belive that anything made during last 20 years can support many users or tasks. Don't bring windows 3.1 to the discussion like always, it is ancient already...

I have used unix machines that have 500-1000 users in at the same time, each user has had tens of tasks in parallel etc. But maybe I have been dreaming. My XP in front of me has had few months of uptime, runs many processes in parallel all the time. I have X emulation on the other monitor that is connected to big linux cluster that runs all the time hunderds of users doing parallel tasks etc.

It's you that is still thinking that single task is the norm, it is not.

--Kim

If two CPUs are used it needs internal diagnostics for the detection. If Three CPUs are used they can vote who is incorrect. In the most critical systems there are three parallel systems, implemented to different platforms by multiple independent teams. The results from the systems go trough the voting process.

--Kim

I built some MC68340 (Motorola 88020 family) based embedded controller computers for NASA, and they have had no problems with them, including one aboard the International Space Station. Designs have changed quite a bit from the early days. The problems are better understood, and easier to cope with.

It sounds like you work at a real shithole.

That is the way to keep customers, and build a great reputation. Something dimbulb will never understand.

Learn to follow threads. He is talking about hard drive media.

You have a bug in your procedures, then.

Only if you have all the files you need. How do you detect that a file has disappeared?

/BAH

Nope. that's the house I've just moved into. And all that's been fixed. 4 electrician mandays' worth of work.

I never found out why the stove interfered. The previous one did not interfere. One of the first things I had to do that house when I moved in was redo all the wiring.

/BAH

Wrong. I have no idea how you got this notion.

Sigh! Are you confusing me with John?

/BAH

Unfortunately, it's not quite that simple. The votes can only be as good as the data used to make the decisions. Now think of two CPUs who are voting based on bad data and the third who is voting based on the correct data.

/BAH

solve

Yep. If one can do it, any old virus code can do it.

/BAH

I can't remember how many hours we spent talking about just this problem.

/BAH

Testing.

/BAH

solve

Or any device driver that comes with a $9 Chinese serial interface board.

John