Re: Citrix on VMWare platform

2009-05-07 Thread James Rankin 
That has set me thinking - I am starting to wonder if the initial virtual
machine that I built up as a Citrix server was P2V'ed from an existing
Terminal Server by my boss? When he handed it to me it was just a blank
Windows Server 2003 R2 system - but given some of the things he has pulled
off in my time here, I wouldn't put it past him P2V'ing it and not telling
me...

2009/5/7 Sherry Abercrombie 

> We 6 Citrix servers virtualized.  When we P2V'd them using the VMWare tool,
> we saw the same things that you are reporting, built one up from scratch,
> and cloned it, and no longer see those issues. DISCLAIMER:  We are on an
> excruciatingly old version of Citrix Metaframe (1.7 I think), and Windows
> 2000 server.
>
> On Thu, May 7, 2009 at 7:58 AM, James Rankin wrote:
>
>> In amongst my Google browsing, I came across these guidelines, can anyone
>> give any pointers as to the efficacy of this advice (as I am loth just to
>> use something I found on a random webpage) :-)
>>
>> *Memory**For a citrix (SBC) environment it is necesarry to do some tuning
>> on vmware.*
>>
>> *First of all it is better to turn off TP memory sharing. You can do this
>> by not installing the memory ballooning driver when installing vmware tools
>> inside the citrix box.*
>> * Page Sharing*
>>
>> *Disable Page sharing reduces the VMkernel overhead inside an virtual
>> citrix (SBC) server. A  SBC server makes a lot of memory changes which
>> are all getting translated by vmware. By turning off page sharing the
>> vmkernel doenst pay attention to this.*
>> *To turn off page sharing. Change the following in vmware under Advanced
>> Settings.*
>>
>> *Mem.ShareScanTotal = 0*
>> * * *Mem.ShareScanVM = 0PAE* *This option needs to be avoided for a
>> citrix (SBC) server. This option means that vmkernel uses most of the memory
>> under the 4gb. Its better to set this option in advanced settings to *
>>
>> *Mem.AllocHighThreshold = 4096*
>>
>>
>> 2009/5/7 Mike Semon 
>>
>>>  That all sounds good. We don’t use reservations and give them unlimited
>>> in limits also. HA and DRS complain if you have two much resources reserved
>>> or Vm’s with too much memory and vCPU’s. But your situation does not sound
>>> like that is the case.
>>>
>>>
>>>  --
>>>
>>> *From:* James Rankin [mailto:kz2...@googlemail.com]
>>> *Sent:* Thursday, May 07, 2009 6:54 AM
>>> *To:* NT System Admin Issues
>>> *Subject:* Re: Citrix on VMWare platform
>>>
>>>
>>>
>>> We install Citrix after cloning, the template is just a base terminal
>>> server with all required applications. We also use fiber SAN.
>>>
>>> Strange thing is, we never get any alerts, either on the ESX hosts, the
>>> SAN, or anywhere else. Everything seems to be running tickety-boo, but
>>> clearly it isn't. The limits for the guest servers are set to "Unlimited" in
>>> the limits under Resource Allocation and there are no reservations - is this
>>> generally good practice?
>>>
>>> 2009/5/7 Mike Semon 
>>>
>>> We are using SAN based storage. Our SAN storage is EMC Clariion CX3-80
>>> which is Fibre channel. Does your template include Citrix on build? Normally
>>> I start with my Windows 2003 R2 template and install Citrix on each. Have
>>> seen problems with Citrix boxes that have been P2v’d or created from
>>> templates with Citrix installed. Kind of like the problems we used to see if
>>> you tried to image Citrix server. The Citrix servers appear to have adequate
>>> resources. What do your ESX hosts look like? If you are trying to VMotion
>>> them or move them with DRS and it’s complaining that is usually a sign of a
>>> problem with resources on host. Check your memory and CPU reservations and
>>> resources.
>>>
>>>
>>>  --
>>>
>>> *From:* James Rankin [mailto:kz2...@googlemail.com]
>>> *Sent:* Thursday, May 07, 2009 6:40 AM
>>>
>>>
>>> *To:* NT System Admin Issues
>>>
>>> *Subject:* Re: Citrix on VMWare platform
>>>
>>>
>>>
>>> Got dual CPUs and 4GB of RAM for each server. The original server was
>>> built from scratch on VMWare and converted to a template which has been
>>> cloned for all the others.
>>>
>>> Do you use SAN-based storage? We have an IBM DS4000. One of the most
>>> notable performance hits is when t

Re: Citrix on VMWare platform

2009-05-07 Thread Sherry Abercrombie 
We 6 Citrix servers virtualized.  When we P2V'd them using the VMWare tool,
we saw the same things that you are reporting, built one up from scratch,
and cloned it, and no longer see those issues. DISCLAIMER:  We are on an
excruciatingly old version of Citrix Metaframe (1.7 I think), and Windows
2000 server.

On Thu, May 7, 2009 at 7:58 AM, James Rankin  wrote:

> In amongst my Google browsing, I came across these guidelines, can anyone
> give any pointers as to the efficacy of this advice (as I am loth just to
> use something I found on a random webpage) :-)
>
> *Memory**For a citrix (SBC) environment it is necesarry to do some tuning
> on vmware.*
>
> *First of all it is better to turn off TP memory sharing. You can do this
> by not installing the memory ballooning driver when installing vmware tools
> inside the citrix box.*
> * Page Sharing*
>
> *Disable Page sharing reduces the VMkernel overhead inside an virtual
> citrix (SBC) server. A  SBC server makes a lot of memory changes which are
> all getting translated by vmware. By turning off page sharing the vmkernel
> doenst pay attention to this.*
> *To turn off page sharing. Change the following in vmware under Advanced
> Settings.*
>
> *Mem.ShareScanTotal = 0*
> * * *Mem.ShareScanVM = 0PAE* *This option needs to be avoided for a citrix
> (SBC) server. This option means that vmkernel uses most of the memory under
> the 4gb. Its better to set this option in advanced settings to *
>
> *Mem.AllocHighThreshold = 4096*
>
>
> 2009/5/7 Mike Semon 
>
>>  That all sounds good. We don’t use reservations and give them unlimited
>> in limits also. HA and DRS complain if you have two much resources reserved
>> or Vm’s with too much memory and vCPU’s. But your situation does not sound
>> like that is the case.
>>
>>
>>  --
>>
>> *From:* James Rankin [mailto:kz2...@googlemail.com]
>> *Sent:* Thursday, May 07, 2009 6:54 AM
>> *To:* NT System Admin Issues
>> *Subject:* Re: Citrix on VMWare platform
>>
>>
>>
>> We install Citrix after cloning, the template is just a base terminal
>> server with all required applications. We also use fiber SAN.
>>
>> Strange thing is, we never get any alerts, either on the ESX hosts, the
>> SAN, or anywhere else. Everything seems to be running tickety-boo, but
>> clearly it isn't. The limits for the guest servers are set to "Unlimited" in
>> the limits under Resource Allocation and there are no reservations - is this
>> generally good practice?
>>
>> 2009/5/7 Mike Semon 
>>
>> We are using SAN based storage. Our SAN storage is EMC Clariion CX3-80
>> which is Fibre channel. Does your template include Citrix on build? Normally
>> I start with my Windows 2003 R2 template and install Citrix on each. Have
>> seen problems with Citrix boxes that have been P2v’d or created from
>> templates with Citrix installed. Kind of like the problems we used to see if
>> you tried to image Citrix server. The Citrix servers appear to have adequate
>> resources. What do your ESX hosts look like? If you are trying to VMotion
>> them or move them with DRS and it’s complaining that is usually a sign of a
>> problem with resources on host. Check your memory and CPU reservations and
>> resources.
>>
>>
>>  --
>>
>> *From:* James Rankin [mailto:kz2...@googlemail.com]
>> *Sent:* Thursday, May 07, 2009 6:40 AM
>>
>>
>> *To:* NT System Admin Issues
>>
>> *Subject:* Re: Citrix on VMWare platform
>>
>>
>>
>> Got dual CPUs and 4GB of RAM for each server. The original server was
>> built from scratch on VMWare and converted to a template which has been
>> cloned for all the others.
>>
>> Do you use SAN-based storage? We have an IBM DS4000. One of the most
>> notable performance hits is when the Citrix servers are migrated by the DRS,
>> they seem to drag right into the ground at that point.
>>
>> 2009/5/7 Mike Semon 
>>
>> We are running Citrix MPS 4.5 on VMware ESX 3.5 u3. Our performance is ok.
>> Citrix tells us to expect around 30 per Vm depending on type of apps.
>>
>> Were these Citrix servers P2V’d? Did you create them from templates? What
>> kind of CPU and memory do you have allocated for each VM?
>>
>>
>>
>> Mike
>>
>>
>>  --
>>
>> *From:* James Rankin [mailto:kz2...@googlemail.com]
>> *Sent:* Thursday, May 07, 2009 4:09 AM
>> *To:* NT System Admin Issues
>> *Subject:* Citrix on VMWare platform
>>
>>

Re: Citrix on VMWare platform

2009-05-07 Thread Jon D 
I had a 4.0 citrix box on esx for 3 years, and the rest of the farm physical.
While the virtual server couldn't hold as many users, it seems fine. I
made sure the other servers on the esx box had lowered priority on
everything. Lower processor rights, lower memory rights, etc, etc.


.

~ Finally, powerful endpoint security that ISN'T a resource hog! ~
~   ~

Re: Citrix on VMWare platform

2009-05-07 Thread James Rankin 
In amongst my Google browsing, I came across these guidelines, can anyone
give any pointers as to the efficacy of this advice (as I am loth just to
use something I found on a random webpage) :-)

*Memory**For a citrix (SBC) environment it is necesarry to do some tuning on
vmware.*

*First of all it is better to turn off TP memory sharing. You can do this by
not installing the memory ballooning driver when installing vmware tools
inside the citrix box.*
* Page Sharing*

*Disable Page sharing reduces the VMkernel overhead inside an virtual citrix
(SBC) server. A  SBC server makes a lot of memory changes which are all
getting translated by vmware. By turning off page sharing the vmkernel
doenst pay attention to this.*
*To turn off page sharing. Change the following in vmware under Advanced
Settings.*

*Mem.ShareScanTotal = 0*
* * *Mem.ShareScanVM = 0PAE**This option needs to be avoided for a citrix
(SBC) server. This option means that vmkernel uses most of the memory under
the 4gb. Its better to set this option in advanced settings to *

*Mem.AllocHighThreshold = 4096*


2009/5/7 Mike Semon 

>  That all sounds good. We don’t use reservations and give them unlimited
> in limits also. HA and DRS complain if you have two much resources reserved
> or Vm’s with too much memory and vCPU’s. But your situation does not sound
> like that is the case.
>
>
>  --
>
> *From:* James Rankin [mailto:kz2...@googlemail.com]
> *Sent:* Thursday, May 07, 2009 6:54 AM
> *To:* NT System Admin Issues
> *Subject:* Re: Citrix on VMWare platform
>
>
>
> We install Citrix after cloning, the template is just a base terminal
> server with all required applications. We also use fiber SAN.
>
> Strange thing is, we never get any alerts, either on the ESX hosts, the
> SAN, or anywhere else. Everything seems to be running tickety-boo, but
> clearly it isn't. The limits for the guest servers are set to "Unlimited" in
> the limits under Resource Allocation and there are no reservations - is this
> generally good practice?
>
> 2009/5/7 Mike Semon 
>
> We are using SAN based storage. Our SAN storage is EMC Clariion CX3-80
> which is Fibre channel. Does your template include Citrix on build? Normally
> I start with my Windows 2003 R2 template and install Citrix on each. Have
> seen problems with Citrix boxes that have been P2v’d or created from
> templates with Citrix installed. Kind of like the problems we used to see if
> you tried to image Citrix server. The Citrix servers appear to have adequate
> resources. What do your ESX hosts look like? If you are trying to VMotion
> them or move them with DRS and it’s complaining that is usually a sign of a
> problem with resources on host. Check your memory and CPU reservations and
> resources.
>
>
>  --
>
> *From:* James Rankin [mailto:kz2...@googlemail.com]
> *Sent:* Thursday, May 07, 2009 6:40 AM
>
>
> *To:* NT System Admin Issues
>
> *Subject:* Re: Citrix on VMWare platform
>
>
>
> Got dual CPUs and 4GB of RAM for each server. The original server was built
> from scratch on VMWare and converted to a template which has been cloned for
> all the others.
>
> Do you use SAN-based storage? We have an IBM DS4000. One of the most
> notable performance hits is when the Citrix servers are migrated by the DRS,
> they seem to drag right into the ground at that point.
>
> 2009/5/7 Mike Semon 
>
> We are running Citrix MPS 4.5 on VMware ESX 3.5 u3. Our performance is ok.
> Citrix tells us to expect around 30 per Vm depending on type of apps.
>
> Were these Citrix servers P2V’d? Did you create them from templates? What
> kind of CPU and memory do you have allocated for each VM?
>
>
>
> Mike
>
>
>  --
>
> *From:* James Rankin [mailto:kz2...@googlemail.com]
> *Sent:* Thursday, May 07, 2009 4:09 AM
> *To:* NT System Admin Issues
> *Subject:* Citrix on VMWare platform
>
>
>
> Anyone running Citrix MPS 4.5 on VMWare ESX 3.5? We virtualised our entire
> infrastructure last year. The performance of the standard systems has been
> excellent (for instance, our SQL servers and Exchange 2007 systems run
> pretty much exactly as they did before). However the Citrix servers are very
> hit-and-miss - slow logons, application hangs, systems freezing, etc., runs
> poorly when more than seven or eight users logged on to each server. I have
> just taken a subset of our users and put them back onto a physical Citrix
> server, and straight away the performance is instantly better, the logon
> time is considerably faster to start with.
>
> Admittedly we aren't expecting our virtualised systems to perform as well
> as a

RE: Citrix on VMWare platform

2009-05-07 Thread Mike Semon 
That all sounds good. We don't use reservations and give them unlimited in
limits also. HA and DRS complain if you have two much resources reserved or
Vm's with too much memory and vCPU's. But your situation does not sound like
that is the case.

 

  _  

From: James Rankin [mailto:kz2...@googlemail.com] 
Sent: Thursday, May 07, 2009 6:54 AM
To: NT System Admin Issues
Subject: Re: Citrix on VMWare platform

 

We install Citrix after cloning, the template is just a base terminal server
with all required applications. We also use fiber SAN.

Strange thing is, we never get any alerts, either on the ESX hosts, the SAN,
or anywhere else. Everything seems to be running tickety-boo, but clearly it
isn't. The limits for the guest servers are set to "Unlimited" in the limits
under Resource Allocation and there are no reservations - is this generally
good practice?

2009/5/7 Mike Semon 

We are using SAN based storage. Our SAN storage is EMC Clariion CX3-80 which
is Fibre channel. Does your template include Citrix on build? Normally I
start with my Windows 2003 R2 template and install Citrix on each. Have seen
problems with Citrix boxes that have been P2v'd or created from templates
with Citrix installed. Kind of like the problems we used to see if you tried
to image Citrix server. The Citrix servers appear to have adequate
resources. What do your ESX hosts look like? If you are trying to VMotion
them or move them with DRS and it's complaining that is usually a sign of a
problem with resources on host. Check your memory and CPU reservations and
resources.

 

  _  

From: James Rankin [mailto:kz2...@googlemail.com] 
Sent: Thursday, May 07, 2009 6:40 AM


To: NT System Admin Issues

Subject: Re: Citrix on VMWare platform

 

Got dual CPUs and 4GB of RAM for each server. The original server was built
from scratch on VMWare and converted to a template which has been cloned for
all the others.

Do you use SAN-based storage? We have an IBM DS4000. One of the most notable
performance hits is when the Citrix servers are migrated by the DRS, they
seem to drag right into the ground at that point.

2009/5/7 Mike Semon 

We are running Citrix MPS 4.5 on VMware ESX 3.5 u3. Our performance is ok.
Citrix tells us to expect around 30 per Vm depending on type of apps.

Were these Citrix servers P2V'd? Did you create them from templates? What
kind of CPU and memory do you have allocated for each VM?

 

Mike

 

  _  

From: James Rankin [mailto:kz2...@googlemail.com] 
Sent: Thursday, May 07, 2009 4:09 AM
To: NT System Admin Issues
Subject: Citrix on VMWare platform

 

Anyone running Citrix MPS 4.5 on VMWare ESX 3.5? We virtualised our entire
infrastructure last year. The performance of the standard systems has been
excellent (for instance, our SQL servers and Exchange 2007 systems run
pretty much exactly as they did before). However the Citrix servers are very
hit-and-miss - slow logons, application hangs, systems freezing, etc., runs
poorly when more than seven or eight users logged on to each server. I have
just taken a subset of our users and put them back onto a physical Citrix
server, and straight away the performance is instantly better, the logon
time is considerably faster to start with.

Admittedly we aren't expecting our virtualised systems to perform as well as
a dedicated physical system, but the performance degradation appears to be
hugely magnified with regards to the Citrix systems. Is anyone else running
Citrix farms on ESX, and if so, are they experiencing similar performance
issues, and how are they getting around them?

TIA,



JRR

 

 

 

 

 

 

 

 

 

 

 

 

~ Finally, powerful endpoint security that ISN'T a resource hog! ~
~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/>  ~

Re: Citrix on VMWare platform

2009-05-07 Thread James Rankin 
We install Citrix after cloning, the template is just a base terminal server
with all required applications. We also use fiber SAN.

Strange thing is, we never get any alerts, either on the ESX hosts, the SAN,
or anywhere else. Everything seems to be running tickety-boo, but clearly it
isn't. The limits for the guest servers are set to "Unlimited" in the limits
under Resource Allocation and there are no reservations - is this generally
good practice?

2009/5/7 Mike Semon 

>  We are using SAN based storage. Our SAN storage is EMC Clariion CX3-80
> which is Fibre channel. Does your template include Citrix on build? Normally
> I start with my Windows 2003 R2 template and install Citrix on each. Have
> seen problems with Citrix boxes that have been P2v’d or created from
> templates with Citrix installed. Kind of like the problems we used to see if
> you tried to image Citrix server. The Citrix servers appear to have adequate
> resources. What do your ESX hosts look like? If you are trying to VMotion
> them or move them with DRS and it’s complaining that is usually a sign of a
> problem with resources on host. Check your memory and CPU reservations and
> resources.
>
>
>  --
>
> *From:* James Rankin [mailto:kz2...@googlemail.com]
> *Sent:* Thursday, May 07, 2009 6:40 AM
> *To:* NT System Admin Issues
> *Subject:* Re: Citrix on VMWare platform
>
>
>
> Got dual CPUs and 4GB of RAM for each server. The original server was built
> from scratch on VMWare and converted to a template which has been cloned for
> all the others.
>
> Do you use SAN-based storage? We have an IBM DS4000. One of the most
> notable performance hits is when the Citrix servers are migrated by the DRS,
> they seem to drag right into the ground at that point.
>
> 2009/5/7 Mike Semon 
>
> We are running Citrix MPS 4.5 on VMware ESX 3.5 u3. Our performance is ok.
> Citrix tells us to expect around 30 per Vm depending on type of apps.
>
> Were these Citrix servers P2V’d? Did you create them from templates? What
> kind of CPU and memory do you have allocated for each VM?
>
>
>
> Mike
>
>
>  --
>
> *From:* James Rankin [mailto:kz2...@googlemail.com]
> *Sent:* Thursday, May 07, 2009 4:09 AM
> *To:* NT System Admin Issues
> *Subject:* Citrix on VMWare platform
>
>
>
> Anyone running Citrix MPS 4.5 on VMWare ESX 3.5? We virtualised our entire
> infrastructure last year. The performance of the standard systems has been
> excellent (for instance, our SQL servers and Exchange 2007 systems run
> pretty much exactly as they did before). However the Citrix servers are very
> hit-and-miss - slow logons, application hangs, systems freezing, etc., runs
> poorly when more than seven or eight users logged on to each server. I have
> just taken a subset of our users and put them back onto a physical Citrix
> server, and straight away the performance is instantly better, the logon
> time is considerably faster to start with.
>
> Admittedly we aren't expecting our virtualised systems to perform as well
> as a dedicated physical system, but the performance degradation appears to
> be hugely magnified with regards to the Citrix systems. Is anyone else
> running Citrix farms on ESX, and if so, are they experiencing similar
> performance issues, and how are they getting around them?
>
> TIA,
>
>
>
> JRR
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>

~ Finally, powerful endpoint security that ISN'T a resource hog! ~
~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/>  ~

RE: Citrix on VMWare platform

2009-05-07 Thread Mike Semon 
We are using SAN based storage. Our SAN storage is EMC Clariion CX3-80 which
is Fibre channel. Does your template include Citrix on build? Normally I
start with my Windows 2003 R2 template and install Citrix on each. Have seen
problems with Citrix boxes that have been P2v'd or created from templates
with Citrix installed. Kind of like the problems we used to see if you tried
to image Citrix server. The Citrix servers appear to have adequate
resources. What do your ESX hosts look like? If you are trying to VMotion
them or move them with DRS and it's complaining that is usually a sign of a
problem with resources on host. Check your memory and CPU reservations and
resources.

 

  _  

From: James Rankin [mailto:kz2...@googlemail.com] 
Sent: Thursday, May 07, 2009 6:40 AM
To: NT System Admin Issues
Subject: Re: Citrix on VMWare platform

 

Got dual CPUs and 4GB of RAM for each server. The original server was built
from scratch on VMWare and converted to a template which has been cloned for
all the others.

Do you use SAN-based storage? We have an IBM DS4000. One of the most notable
performance hits is when the Citrix servers are migrated by the DRS, they
seem to drag right into the ground at that point.

2009/5/7 Mike Semon 

We are running Citrix MPS 4.5 on VMware ESX 3.5 u3. Our performance is ok.
Citrix tells us to expect around 30 per Vm depending on type of apps.

Were these Citrix servers P2V'd? Did you create them from templates? What
kind of CPU and memory do you have allocated for each VM?

 

Mike

 

  _  

From: James Rankin [mailto:kz2...@googlemail.com] 
Sent: Thursday, May 07, 2009 4:09 AM
To: NT System Admin Issues
Subject: Citrix on VMWare platform

 

Anyone running Citrix MPS 4.5 on VMWare ESX 3.5? We virtualised our entire
infrastructure last year. The performance of the standard systems has been
excellent (for instance, our SQL servers and Exchange 2007 systems run
pretty much exactly as they did before). However the Citrix servers are very
hit-and-miss - slow logons, application hangs, systems freezing, etc., runs
poorly when more than seven or eight users logged on to each server. I have
just taken a subset of our users and put them back onto a physical Citrix
server, and straight away the performance is instantly better, the logon
time is considerably faster to start with.

Admittedly we aren't expecting our virtualised systems to perform as well as
a dedicated physical system, but the performance degradation appears to be
hugely magnified with regards to the Citrix systems. Is anyone else running
Citrix farms on ESX, and if so, are they experiencing similar performance
issues, and how are they getting around them?

TIA,



JRR

 

 

 

 

 

 

 

~ Finally, powerful endpoint security that ISN'T a resource hog! ~
~ <http://www.sunbeltsoftware.com/Business/VIPRE-Enterprise/>  ~

Re: Citrix on VMWare platform

2009-05-07 Thread James Rankin 
Got dual CPUs and 4GB of RAM for each server. The original server was built
from scratch on VMWare and converted to a template which has been cloned for
all the others.

Do you use SAN-based storage? We have an IBM DS4000. One of the most notable
performance hits is when the Citrix servers are migrated by the DRS, they
seem to drag right into the ground at that point.

2009/5/7 Mike Semon 

>  We are running Citrix MPS 4.5 on VMware ESX 3.5 u3. Our performance is
> ok. Citrix tells us to expect around 30 per Vm depending on type of apps.
>
> Were these Citrix servers P2V’d? Did you create them from templates? What
> kind of CPU and memory do you have allocated for each VM?
>
>
>
> Mike
>
>
>  --
>
> *From:* James Rankin [mailto:kz2...@googlemail.com]
> *Sent:* Thursday, May 07, 2009 4:09 AM
> *To:* NT System Admin Issues
> *Subject:* Citrix on VMWare platform
>
>
>
> Anyone running Citrix MPS 4.5 on VMWare ESX 3.5? We virtualised our entire
> infrastructure last year. The performance of the standard systems has been
> excellent (for instance, our SQL servers and Exchange 2007 systems run
> pretty much exactly as they did before). However the Citrix servers are very
> hit-and-miss - slow logons, application hangs, systems freezing, etc., runs
> poorly when more than seven or eight users logged on to each server. I have
> just taken a subset of our users and put them back onto a physical Citrix
> server, and straight away the performance is instantly better, the logon
> time is considerably faster to start with.
>
> Admittedly we aren't expecting our virtualised systems to perform as well
> as a dedicated physical system, but the performance degradation appears to
> be hugely magnified with regards to the Citrix systems. Is anyone else
> running Citrix farms on ESX, and if so, are they experiencing similar
> performance issues, and how are they getting around them?
>
> TIA,
>
>
>
> JRR
>
>
>
>
>
>
>
>
>
>

~ Finally, powerful endpoint security that ISN'T a resource hog! ~
~   ~

RE: Citrix on VMWare platform

2009-05-07 Thread Mike Semon 
We are running Citrix MPS 4.5 on VMware ESX 3.5 u3. Our performance is ok.
Citrix tells us to expect around 30 per Vm depending on type of apps.

Were these Citrix servers P2V'd? Did you create them from templates? What
kind of CPU and memory do you have allocated for each VM?

 

Mike

 

  _  

From: James Rankin [mailto:kz2...@googlemail.com] 
Sent: Thursday, May 07, 2009 4:09 AM
To: NT System Admin Issues
Subject: Citrix on VMWare platform

 

Anyone running Citrix MPS 4.5 on VMWare ESX 3.5? We virtualised our entire
infrastructure last year. The performance of the standard systems has been
excellent (for instance, our SQL servers and Exchange 2007 systems run
pretty much exactly as they did before). However the Citrix servers are very
hit-and-miss - slow logons, application hangs, systems freezing, etc., runs
poorly when more than seven or eight users logged on to each server. I have
just taken a subset of our users and put them back onto a physical Citrix
server, and straight away the performance is instantly better, the logon
time is considerably faster to start with.

Admittedly we aren't expecting our virtualised systems to perform as well as
a dedicated physical system, but the performance degradation appears to be
hugely magnified with regards to the Citrix systems. Is anyone else running
Citrix farms on ESX, and if so, are they experiencing similar performance
issues, and how are they getting around them?

TIA,



JRR

 

 

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