Ahh get smart greg..... Let them login in and write a time stamp into the home dir. Check it at login and if it is within 60 seconds of last one they don't get logged in due security risk :-) NOW as to Documents. You need to try google. I did a search for dell adding a processor performance Citrix And the first link was a doc from dell comparing single dual and quad Called "User Capacity for MetaFrame Servers". Throw in Compaq instead of dell and I get: http://www.go-eol.com/whitepapers/pdfs/DL580.pdf Change to HP http://activeanswers.compaq.com/ActiveAnswers/Render/1,1027,4825-6-100-2 25-1,00.htm http://www.computerworld.com/hardwaretopics/hardware/server/story/0,1080 1,63431,00.html So what I am saying is that with a little searching you can find a ton to support almost anything. Ron Oglesby Senior Technical Architect RapidApp Office 312.372.7188 Mobile 815.325.7618 email roglesby@xxxxxxxxxxxx -----Original Message----- From: Greg Reese [mailto:GReese@xxxxxxxxxxxxxxxx] Sent: Thursday, December 18, 2003 8:43 AM To: thin@xxxxxxxxxxxxx Subject: [THIN] Re: Advantages of single over dual processors don't get me wrong, I want duals. It just opens up a problems for me. When my users figure out one server is faster than the other. They keep logging in and out of the farm until they get the fast server. That causes its own fun. Or they call and pester me to do them a favor and always direct them to the "good" server. I would really like to buy 1ghz processors again but that is no longer possible. Greg -----Original Message----- From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx]On Behalf Of Ian Aston Sent: Thursday, December 18, 2003 9:38 AM To: 'thin@xxxxxxxxxxxxx' Subject: [THIN] Re: Advantages of single over dual processors Not really Greg... it does confirm most of what I am thinking myself. I would prefer small redundant servers, ie 2 * 1.8ghz procs (or whatever is the speed at the time), 2GB RAM, 1 * SCSI disk.... these are quite cheap at the moment, but I need to be able to quantify and substantiate my arguments with facts. Thanks, Ian -----Original Message----- From: Greg Reese [mailto:GReese@xxxxxxxxxxxxxxxx] Sent: 18 December 2003 14:24 To: thin@xxxxxxxxxxxxx Subject: [THIN] Re: Advantages of single over dual processors but does that come back to you with the added speed of a single 2.4ghz processor vs 2 1ghz processors? I am in the same situation here. I currently have 2 main servers for terminal services deployed, both with 1ghz p3 processors (not xeon). The new server I am looking at is a single 2.4ghz p4 Xeon. Greg -----Original Message----- From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx]On Behalf Of Braebaum, Neil Sent: Thursday, December 18, 2003 9:18 AM To: thin@xxxxxxxxxxxxx Subject: [THIN] Re: Advantages of single over dual processors > -----Original Message----- > From: thin-bounce@xxxxxxxxxxxxx [mailto:thin-bounce@xxxxxxxxxxxxx] > Sent: 18 December 2003 13:51 > To: thin@xxxxxxxxxxxxx > Subject: [THIN] Re: Advantages of single over dual processors > > > > Well if nothing else, with single CPU machines - every CPU > > has to run an instance of the OS. With duals, at least you > > remove some overhead, with little penalty on scaling. > > > > Neil > > I *think* I understand what you are saying, but not completely...? As well as what Angus has said - for a farm of single cpu terminal servers, every server has to run an instance of the OS - therefore each CPU=OS running. With duals (or greater for that matter), you have one instance of the OS per machine, and additional CPUs for other load - therefore not the same degree of OS overhead per machine - therefore the effective OS penalty per CPU isn't there with duals. In addition, scaling of the OS is fine with duals - and to be fair, with greater number of CPUs, depending on types of applications used. I'm not saying 8 ways or bigger make the best choice of machines for terminal server implementations, but up to around 4 CPUs can make sense for bigger user audience counts. As it is, though, the current rationale of duals making a lot of sense is true - with single CPU servers, you are taking a greater hit for OS. 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