[THIN] Re: RDP faster than ICA

  • From: Adam_Baum@xxxxxxxxxxxxx
  • To: thin@xxxxxxxxxxxxx
  • Date: Tue, 13 Aug 2002 08:57:32 -0700

Nomally, I would agree with you.  However, with one NIC showing comparable
performance, and the other showing differences...To me, this shows that
something is amiss.   ICA does not do that much more to account for a 20
second difference in login times. Especially on a 100mb LAN.  I think
something is worng with my setup somewhere, not that ICA is a worse

                    Joe Shonk                                                   
                    <JShonk@gtcsyst       To:     "'thin@xxxxxxxxxxxxx'" 
                    ems.com>              cc:                                   
                    Sent by:              Subject:     [THIN] Re: RDP faster 
than ICA                                
                    08:45 AM                                                    
                    Please respond                                              
                    to thin                                                     

It's comparing Apples to Oranges.. Keep in mind that ICA maps more VC than
RDP by default...  (Drives, COM ports, etc)... So yes, ICA is going to be a
little slower logging on.

ICA is also dynamic...  It will constantly monitor the amount of bandwidth
it has available and adjust accordingly.  Simply test one user logining in
isn't going to be a good indicator as to which protocol is faster.  Try
seeing how many users you could comfortably fit on a small WAN link.


-----Original Message-----
From: Adam_Baum@xxxxxxxxxxxxx [mailto:Adam_Baum@xxxxxxxxxxxxx]
Sent: Tuesday, August 13, 2002 8:32 AM
To: thin@xxxxxxxxxxxxx
Subject: [THIN] RDP faster than ICA

HI Folks,

A few days ago I posted about RDP being faster than ICA.  I got a few
responses asking where, how, etc.   Here is the first set of results from

The most noticeable difference is during logon.  I am running W2K SP2, XPe
FR2 on a dual-homed system.  One NIC is connected to my internal network,
the other is connected to the Internet.  The internal NIC registers in
WINS, the Internet NIC does not.  I have configured both NICS for their
respective TCP/IP settings.  Internet connectivity shows no difference in
performance.  When connecting from the internal side, RDP comes back with a
login prompt within 5 seconds.  It takes 23 seconds for ICA.  I have
enabled/disabled the various listeners for the server to see if they have
an effect.  The normal setting is with IPX and Netbios listeners disabled.
Tweaking these settings has shown no noticeable difference.  This server is
not used, two people tops.  I am in the testing phase before I roll it out.


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