Anonymous_User Absent Member.
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Cluster services and Citrix

Hi,

I have a customer with a 3-node NetWare 6.5 (SP3) cluster presenting fileservices to an 18 server Citrix farm.

This Cluster functions correct, but in event of a fail-over or migrate all of the Citrix servers are going to 100% CPU utilization and have to be rebooted to function again.

Is this normal with Citrix?

Can I do some tuning to eliminate this problem?

Thanks,
Jacco

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6 Replies
Anonymous_User Absent Member.
Absent Member.

Re: Cluster services and Citrix

JB,

Not sure if this is *normal* as I don't have customers running NCS and
Citrix together. But one thought that came to mind. What Novell Client
version on the Citrix boxes and is there also any ZEN client/agent
installed on the citrix boxes, if so what version?

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Anonymous_User Absent Member.
Absent Member.

Re: Cluster services and Citrix

I would not have said that was normal. It does depend upon what the
connections are and the protocols... What do the Citrix boxes run?



On Fri, 09 Dec 2005 12:40:09 GMT, JB <jb@gmail.com> wrote:

>Hi,
>
>I have a customer with a 3-node NetWare 6.5 (SP3) cluster presenting fileservices to an 18 server Citrix farm.
>
>This Cluster functions correct, but in event of a fail-over or migrate all of the Citrix servers are going to 100% CPU utilization and have to be rebooted to function again.
>
>Is this normal with Citrix?
>
>Can I do some tuning to eliminate this problem?
>
>Thanks,
>Jacco

Tim
___________________
Tim Heywood (SYSOP)
NDS8
Scotland
(God's Country)
www.nds8.co.uk
___________________

In theory, practice and theory are the same
In Practice, they are different
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Anonymous_User Absent Member.
Absent Member.

Re: Cluster services and Citrix

The usual office applications.

When I do a test in the lab I can reproduce te problem by making about 20 ica sessions open 20 word documents, 20 excel documents and 20 media player movies. Then when I fail-over (takes about 40 seconds) the Citrix box goes to 100% CPU load an doesn't function anymore without rebooting.

When I do the same test with only 20 word documents open, the user can resume with their work after about 90 seconds.

Jacco
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Anonymous_User Absent Member.
Absent Member.

Re: Cluster services and Citrix

The following versions are effective:

ZEN Agent: v. 4.0.1.17
Novell Client : 4.90 SP2 Patchkit 'D' + postpatches (lgncx4/ndppnt/novprnt_5/nwdns_5/nwfs_10/nwgina_12/srvloc_4)


Jacco
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Anonymous_User Absent Member.
Absent Member.

Re: Cluster services and Citrix

As you have a test lab, will you try with just the 20 Excel and 20
media player connections please.

Thanks
Tim
___________________
Tim Heywood (SYSOP)
NDS8
Scotland
(God's Country)
www.nds8.co.uk
___________________

In theory, practice and theory are the same
In Practice, they are different
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Anonymous_User Absent Member.
Absent Member.

Re: Cluster services and Citrix

You will just have to install some (or all !!!) of those novell patches for the Novell client

I also had this in my production enviroment, It was solved by installing the following software:

Client32 4.90 SP2
PKD + NWFS:SYS_13

It was especially when running Lotus Notes, with the Notes data directory

"JB" <jb@gmail.com> wrote in message news:JWemf.6607$ME5.2115@prv-forum2.provo.novell.com...
Hi,

I have a customer with a 3-node NetWare 6.5 (SP3) cluster presenting fileservices to an 18 server Citrix farm.

This Cluster functions correct, but in event of a fail-over or migrate all of the Citrix servers are going to 100% CPU utilization and have to be rebooted to function again.

Is this normal with Citrix?

Can I do some tuning to eliminate this problem?

Thanks,
Jacco
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