[jhb_airlines] Re: Perception of Server Lag

  • From: Gerry Winskill <gwinsk@xxxxxxx>
  • To: jhb_airlines@xxxxxxxxxxxxx
  • Date: Fri, 22 Sep 2006 19:06:15 +0100

I remember those circumstances in one of the FPI sessions. I think it was at Aldergrove. I'm pretty sure it was Alastair who I heard close down for the night, after landing, when on my display he was still about 6 DME on the ILS.

Gerry Winskill

Bones wrote:

I would guess that the person with the slow machine would be the one sending
delayed data.

The only way to check this would be to run a normal session and hope that
two aircraft are sitting on the ground watching arrivals. If an aircraft is
lagging then I guess the two ground observers should see an identical amount
of lag. It would be odd if one saw the aircraft taxi in a minute or so
before the other ground observer.

Obviously the data being sent to controllers is different as I've never
noticed ANY lag on the radar screen.


-----Original Message-----
From: jhb_airlines-bounce@xxxxxxxxxxxxx
[mailto:jhb_airlines-bounce@xxxxxxxxxxxxx] On Behalf Of Alastair
Sent: 22 September 2006 18:31
To: jhb_airlines@xxxxxxxxxxxxx
Subject: [jhb_airlines] Re: Perception of Server Lag

As you say, Stefan's reply was very interesting,

One thing I have been wondering about.

Say pilot 'A' has a fast machine, few TSR's running etc. and pilot 'B'
has a slow machine with everything loaded up.

How would pilot A see pilot B and vice versa?

i.e. would the slow machine bring everything else 'down' the way it used
to happen in the MP days (apparently).

Also it gets more complex when pilots C, D, E etc.. join in the local

Perhaps, when things are quite, a little experimenting might help to
clarify matters.

I had honestly thought that when we were all using the one server that
the lag would virtually be non existent, but Wednesday night proved the
lie to that. (albeit at the end of the flying session)

Answers on the back of a £5 note.....etc..


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