Citrix Servers

Jimm

Member
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Hello list,

We are just a couple of weeks from going live with Xe, and I have a couple =
of questions.

What is the estimated number of users that you can expect a 100% dedicated =
Citrix server to accomodate, using Xe?

We have heard numbers anywhere from 10 to 30, but I need some real life =
experiences here...

Also, how long are full package builds taking in Xe? I know there are =
variables that enter into the equation, but I am just looking for a range.

Thanks!

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<DIV>Hello list,</DIV>
<DIV></DIV>
<DIV>We are just a couple of weeks from going live with Xe, and I have a =
couple=20
of questions.</DIV>
<DIV></DIV>
<DIV>What is the estimated number of users that you can expect a 100% =
dedicated=20
Citrix server to accomodate, using Xe?</DIV>
<DIV></DIV>
<DIV>We have heard numbers anywhere from 10 to 30, but I need some real =
life=20
experiences here...</DIV>
<DIV></DIV>
<DIV>Also, how long are full package builds taking in Xe? I =
know=20
there are variables that enter into the equation, but I am just looking =
for a=20
range.</DIV>
<DIV></DIV>
<DIV>Thanks!</DIV>
<DIV></DIV></BODY></HTML>

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got_to_love_jde

Reputable Poster
jimm,
you should provide a little more information like what is the speed of your processors and also the number of processors you have on your citrix box as well as how much memory. are you planning on using an application server as well ? all of these will have a bearing on the number of users.
dave


NT 4.0 SP5, SQL 7.0, One World B7321 SP12.4, Citrix 1.8 (XE soon)
 

Jimm

Member
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Of course. I apologize, Dave.

We are running Pentium III, 500 MHz, dual processors, with 2 GB of memory, =
no application server.

Any help would be appreciated.

Thanks.


>>> [email protected] Tuesday 02/13/01 2:28 PM >>>
jimm,
you should provide a little more information like what is the speed of =
your processors and also the number of processors you have on your citrix =
box as well as how much memory. are you planning on using an application =
server as well ? all of these will have a bearing on the number of users. =
=20
dave


NT 4.0 SP5, SQL 7.0, One World B7321 SP12.4, Citrix 1.8 (XE soon)=20
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<BODY style=3D"MARGIN-TOP: 2px; FONT: 12pt Arial; MARGIN-LEFT: 2px">
<DIV>Of course. I apologize, Dave.</DIV>
<DIV></DIV>
<DIV>We are running Pentium III, 500 MHz, dual processors, with 2 GB of =
memory,=20
no application server.</DIV>
<DIV></DIV>
<DIV>Any help would be appreciated.</DIV>
<DIV></DIV>
<DIV>Thanks.</DIV>
<DIV>

>>> [email protected] Tuesday 02/13/01 2:28 =
PM=20
>>>
jimm,
you should provide a little more=20
information like what is the speed of your processors and also the =
number=20
of processors you have on your citrix box as well as how much memory.=
are=20
you planning on using an application server as well ? all of these will =
have a=20
bearing on the number of users.
dave


NT 4.0 SP5, SQL =
7.0,=20
One World B7321 SP12.4, Citrix 1.8 (XE soon)=20

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at:
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lat.pl?Cat=3D&Board=3DOW&Number=3D5539</A>=20

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got_to_love_jde

Reputable Poster
jimm,
my situation is similar. i have one citrix server, dual 400's with a gig of memory. i can comfortably run 20 or so users with no major problem so i would assume you could get closer to 30 users. other companies employ an application server and can handle up to 50 or so users on a single box of your size. citrix is a wonderful thing.
good luck,
dave



NT 4.0 SP5, SQL 7.0, One World B7321 SP12.4, Citrix 1.8 (XE soon)
 

altquark

Legendary Poster
Hi Jimm

I helped introduce Citrix to JD Edwards as a solution - many of the whitepapers on the Knowledge garden were written by myself.

The scoop is as follows. It is highly recommended to opt for Dual PIII servers with approximately 2Gb RAM and 10,000 RPM Drives (~9Gb mirrored volume is fine).

Now, depending on what applications you run under OneWorld determines the transactional load of a Citrix server. It is certainly possible to achieve LARGE numbers of users on the server since the numbers of users is memory-bound rather than processor bound - but once you reach a certain limit the system starts paging (which is bad).

A terminal server session running oexplore.exe alone averages between 40-50Mb RAM used - therefore 2Gb should be able to handle 40-50 users.

Based on the transactions, however, that get pumped through the system - well, a Journal Entry is nothing compared to a Sales Order Entry with Advanced Pricing. The latter is what we tested for the most at JD Edwards - and we discovered that if you run 2-Tier - each time you process a sales order line it slows down ALL users on that box for the process time. Now - if you have 40 users on a terminal server and enter approximately 20,000 order lines in an 8 hour day for those 40 users - then each user is entering 1 per minute - ie processing 1 order line every 1.5 seconds across the Citrix Server.

Since an order line takes 100% of 1 cpu for ~1 second (on a PIII 500Mhz) - it means that you will see ~50% CPU utilization in this model for the sales order processing alone. That citrix server would be running pretty heavy when you add all the other apps etc.

Alternatively if you run the sales order processing logic on another machine that is at least as fast - then you will reduce the processing load off the Terminal Server - and hence will make the Terminal Server both more reliable and probably a little more scalable (apart from the memory limitations).

Remember - this is a transactional model. It is often the case that certain users are process more than other users in an ERP model - size accordingly.

Using 1Ghz processors will certainly allow you to PROCESS more transactions - but if you still have 2Gb of memory, then you will no doubt still only scale to ~40-50 users.

Lastly - as a note, customers often want to try and fit more users onto a single box - which often makes no financial or scalable sense at all. If customers purchase, for example, a Quad Xeon PIII with 4Gb RAM - then they are probably spending $23,810.00 (from Dell's website for a Dell 6400) - but if they happen to purchase 2 x Dual PIII machines to do the same job - it costs $8,956.00 (Dual 800MHz PIII PowerEdge 1400) - BUT its a lot more reliable (load balancing) AND you have twice the network bandwidth for the users.

My point is go for the Dual PIII 2Gb machines - try not to compress too many users onto large boxes - it makes no financial sense.

Jon Steel

ERP Sourcing
http://www.erpsourcing.com
[email protected]
 
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