[THIN] Re: Bandwidth Question
- From: "Eilers, Lee \(CDC/OCOO/ITSO\) \(CTR\)" <lee4@xxxxxxx>
- To: <thin@xxxxxxxxxxxxx>
- Date: Fri, 5 May 2006 17:18:21 -0400
You know, I had forgotten about this kind of connectivity. Had not done
it in so long, kind of old school, but you are right, it would help cut
out just a little more overhead. I seriously do not think that our
security team would allow a server with modem attached on the network,
but I forwarded the idea to management just the same.
Thanks!
_____
From: Rick Mack [mailto:thin-bounce@xxxxxxxxxxxxx] On Behalf Of Rick
Mack
Sent: Friday, May 05, 2006 4:13 PM
To: thin@xxxxxxxxxxxxx
Subject: RE: [THIN] Re: Bandwidth Question
Hi,
On a low bandwidth connection, you basically have to turn off anything
that generates additional noise.
If you're using an in-house or custom application make sure it doesn't
do unnecessary screen repaints etc that can't be cached in the bitmap
cache. Turn off clipboard mapping 'cause this can majorly chew up
bandwidth on any WAN link. Make sure keyboard/mouse queing is enabled
because this will reduce the TCP/IP packet overhead.
Simplify things as much as possible.
Speedscreen addresses higher latency fairly well but the smarter aspects
won't really help you unless the local text echo etc can be used for
your applications. In Australia you can approach Citrix to see if
SpeedScreen can be tweaked for a particular application so that might be
an option for you.
You've also got an alternative for dial-up connections which is
connecting directly to a modem attached to a Citrix server. With direct
dialling you haven't got the overhead of supporting ICA over TCP/IP so
the session is generally a whole lot more responsive. However then
you've got an international telephone connection charge which may not be
acceptable.
regards,
Rick
Ulrich Mack
Volante Systems
Level 2, 30 Little Cribb Street
Coronation Drive Office Park
Milton Qld 4064
tel: +61 7 32431847
fax: +61 7 32431992
rick.mack@xxxxxxxxxxxxxx
_____
From: thin-bounce@xxxxxxxxxxxxx on behalf of Eilers, Lee (CDC/OCOO/ITSO)
(CTR)
Sent: Sat 6/05/2006 3:09
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: Bandwidth Question
These are for a few dozen users in undeveloped countries with poor
infrastructure.
I have done:
Enable SpeedScreen - Done
Lower both your resolution and color depth - Done
Disable audio - Done
Disable port mapping - Was looking at this, citrix policy in MPS 3.0?
If they don't need to print, disable printing. - Was looking at this,
citrix policy in MPS 3.0?
Maybe look into a packeteer type unit for your home site. - For dial up
connections?
_____
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On
Behalf Of Taylor, George
Sent: Friday, May 05, 2006 12:04 PM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: Bandwidth Question
wow, and being CDC you are the guys that really need communications.
Just some thoughts:
Enable SpeedScreen
Lower both your resolution and color depth
Disable audio
Disable port mapping
If they don't need to print, disable printing.
Maybe look into a packeteer type unit for your home site.
George Taylor
Systems Programmer
Regional Health Inc.
_____
From: Eilers, Lee (CDC/OCOO/ITSO) (CTR) [mailto:lee4@xxxxxxx]
Sent: Friday, May 05, 2006 8:12 AM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Bandwidth Question
We have users in "undeveloped" countries, where telecommunication
systems are questionable at best, that connect at dial-up speeds in the
15k to 20k range. These users connecting to our Citrix environment
complain that our "system is useless" :-p
it is my experience and opinion that you need at least 20k for Citrix,
ideally 26K.
Is there "any" ideas on how to handle these users over a crappy
connection?
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