[THIN] Re: Packetshaper and Citrix
- From: Jeremy Saunders <jeremy.saunders@xxxxxxxxxxx>
- To: thin@xxxxxxxxxxxxx
- Date: Wed, 28 Jun 2006 20:11:31 +0800
Well...that depends if latency is your issue. The SMC Console will show you
exactly what's happening within each ICA session.
There could be a serialisation delay that is causing the packets to be
queued, but the interface bitrate would have to be peaking for this to
occur. And if you are thinking that it's only ICA traffic passing on the
WAN, then that's hardly possible. The Packeteer will tell you exactly
what's traversing the WAN. Although, if the classes have been locked down
by another integrator, then you probably want to place it back into
discovery mode.
The theory is that packets should only queue when the hardware and software
queues are full. Are there QOS policies on the routers? They may not be
working correctly, or you may have an IOS bug. Of course that never happens
:) And like Tim says, ICA should have a higher priority than HTTP.
I made a mistake last year on one site of placing HTTP in the same QOS
policy as ICA to ensure that the PN Client had access to the Citrix XML and
Web Interface servers. Of course I didn't create an access list to lock
this down to particular servers, so when the users streamed Internet radio
to their local PC's, ICA traffic took a huge hit. DOH!!! I'm a reformed
idiot Tim.
I'm intrigued to know what you problem is. Let us know if you manage to
track it down.
Cheers.
Kind regards,
Jeremy Saunders
Senior Technical Specialist
Infrastructure Technology Services
(ITS) & Cerulean
Global Technology Services (GTS)
IBM Australia
Level 2, 1060 Hay Street
West Perth WA 6005
Visit us at
http://www.ibm.com/services/au/its
P: +61 8 9261 8412 F: +61 8 9261 8486
M: TBA E-mail:
jeremy.saunders@xxxxxxxxxxx
"Parr, Steve"
<sparr@metroland.
com> To
Sent by: <thin@xxxxxxxxxxxxx>
thin-bounce@freel cc
ists.org
Subject
[THIN] Re: Packetshaper and Citrix
28/06/2006 04:40
AM
Please respond to
thin
Basic advise then is to use Speedscreen Latency Reduction?
It is a WAN situation(some users connecting from one country to another and
in some cases across the Atlantic I believe) and tho I have not been on
site yet what I hear is that when packet states have been analyzed there is
a large queueing up of ICA traffic(which is probably the only real traffic
passing).
-----Original Message-----
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On
Behalf Of Jeremy Saunders
Sent: Tuesday, June 27, 2006 4:30 PM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: Packetshaper and Citrix
Also use the SMC Console http://www.citrix4ge.de/ctxsdk/smcc.htm. It will
present you with the latency that each session is experiencing. Very
important information to understand. A Packeteer cannot really adddress WAN
"oversubscription" issues. Force speedscreen latency reduction to on, on
the clients. The initial ICA communications between the client and server
negotiate the best settings. This is not renegotiated during the session.
So if you are using a WAN technology that is not consistent, such as ADSL,
it's very difficult to manage.
Cheers.
Kind regards,
Jeremy Saunders
Senior Technical Specialist
Infrastructure Technology Services
(ITS) & Cerulean
Global Technology Services (GTS)
IBM Australia
Level 2, 1060 Hay Street
West Perth WA 6005
Visit us at
http://www.ibm.com/services/au/its
P: +61 8 9261 8412 F: +61 8 9261 8486
M: TBA E-mail:
jeremy.saunders@xxxxxxxxxxx
"Jim Kenzig
http://ThinHelp.c
om" To
<jkenzig@xxxxxxxx thin@xxxxxxxxxxxxx
m> cc
Sent by:
thin-bounce@freel Subject
ists.org [THIN] Re: Packetshaper and Citrix
28/06/2006 02:55
AM
Please respond to
thin
Here is Cisco's article on autonegotiation and duplex speeds...
http://www.cisco.com/en/US/tech/tk389/tk214/technologies_tech_note09186a0080094781.shtml
It is very common to see switches set at Half duplex and server cards set
at full duplex or visa versa and this creates a big bottleneck.
Jim
"Parr, Steve" <> wrote:
Thanks Jim!
From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] On
Behalf Of Jim Kenzig http://ThinHelp.com
Sent: Tuesday, June 27, 2006 2:23 PM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] Re: Packetshaper and Citrix
If anything the packetshaper should improve the performance not hinder it.
If it is network issues I would start looking at portfast settings if
cisco switches..
http://www.cisco.com/warp/public/473/12.html And also make sure that
duplex speeds are properly configured on the server network cards and
switches.
Also check out Michaels article on performance issues where he touches on
the Maxworkitems registry keys..
http://www.msterminalservices.org/articles/Fileserving-Terminal-Server-Environments-Part2.html
JK
"Parr, Steve" <sparr@xxxxxxxxxxxxx> wrote:
Will be troubleshooting a situation at a company where Packetshaper is
used including Citrix traffic. Any heads up about the use of Packetshaper
and Citrix. Apparently they are having some performance issues.
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