• Subject: Re: new display file features; was "4 - subfiles"
  • From: email@xxxxxxxxxxxxxxxxxxx (James W Kilgore)
  • Date: Thu, 11 Nov 1999 11:10:49 -0800
  • Organization: Progressive Data Systems, Inc.


Exactly, other users or actually -all- users will notice a keystroke
echo degradation as the system must process every keystroke.

Here's my little analogy: Let's say there is a clerk at a processing
window (your CPU) and a person comes in to fill out a job application. 
The clerk grabs pencil and paper and starts to ask the applicant
questions.  As the applicant provides their name, address, etc. the
clerk writes it down.  BTW, the applicant speaks in letters, not words.

So the conversation goes like this:
Clerk: Name?
Applicant: J
Clerk: J
Applicant: a
Clerk: a
Applicant: m
Clerk: m
Applicant: e
Clerk: e
Applicant: s
Clerk: s

You get the picture.

This works great in a single clerk, single applicant situation.

By going "multi-user" you have multiple applicants and still a single
clerk.  So as two applicants give their names, the clerk can write them
both down rather rapidly and move on to address.  Once three, four,
five, six, etc. applicants show up at the window, it takes the clerk
longer to cycle back to applicant number one for the next letter.

This is what I mean by a linear degradation of response time.  Onesy,
twosy users won't notice it.  But eventually you hit the processor
ceiling and response time takes a nose dive.

Now, the 5250 clerk hands the applicant the form and says get back to me
once you've filled it in. Don't bug me. I've got other things to do.

boothm@earth.goddard.edu wrote:
> Please explain this a bit more.  When you say "system performance" do you
> mean other users will see a slowdown, that the user will suffer slower
> response times, that the system will begin to lag?
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