Citrix & ADSL: problem?

[isterios]

Hello,

We checked that all our sites connected with ADSL to citrix have big problems of slowness. It looks as if this problem occurs only with ADSL.

Is there a technical explanation for this?

Thanks.

 

[jfp23]

Can you give any kind of speed comparison? when you run dsl speed tests from dslreports.com or similar what do you get? and how does that compare to what your seeing with citrix sessions, also what version of the citrix client/server are you running, and how do you have the client configured? are you using speed screen latency reduction?

 

[ascotta]

It depends on what else is on the link?

Have you tried setting up speedscreen stuff ? Local text echo etc?

Citrix will work fine on a 28 k modem so it has to be your adsl and not citrix.

How many users you trying to get down the line and what size is your pipe?

[blue] Oh you know, just doing what I do.[/blue]

Cheers
Scott

 

[isterios]

Our Citrix version is Presentation Server 3.0 with nfuse clients (v. 9)
Bi Xeon 3.2Ghz (+hyperthreading) 4Go Ram for about 60 users.

We compare with Lan lines, for example 1Mb or 2Mb.
Our ADSL lines are mostly 512Kb.

The problem is that on these ADSL lines, outside of Citrix, the network applications are much more fast (using exchange, internet explorer and file transfers for example). But as soon as users go through Citrix, the speed becomes very very very low.

On the servers site (internal Lan 100Mb), speed is very good.

I don't use screen latency reduction: when I used this setting, speed was worse.

 

[ascotta]

Is it a hub typology ?

How many users for example at site 1.

If your citrix is "contending " with other traffic, then yes it can become very slow. It looks like it has to contend with exchange IE and file copying for example. DO you know what traffic is going up abnd down these lines ?

[blue] Oh you know, just doing what I do.[/blue]

Cheers
Scott

 

[isterios]

For the site which is more complaining (example):
ADSL: 1Mo DL, 256Kb UL, 10 users.

 

[ascotta]

OK each user will use as much bandwidth as is available, but can work successfully with 15-20 each. So thats 200K for a start. What else uses the link, is the fault intermittent? or permanent.

COuld you try 1 user and then add untill it gets painfull?

[blue] Oh you know, just doing what I do.[/blue]

Cheers
Scott

 

[isterios]

Yes we made an audit of our network, but it didn't appear that the bandwidth is fully used.

But yes we have other applications than citrix running on these networks, like exchange, IE, SAP etc.