Sessions on Xenapp 6.5 Server

Hi

  For one of our Xenapp 6.5 Server I could see only one or two sessions compared to other Servers in the Worker Group which had around 20 sessions each.

This server in the same Worker Groups as other Servers.  It is not different to anything compared to other Servers..

Anything that I can check to figure out why it has very less sessions compared to others ?

All our applications are Streamed and published to a Worker Group which has all the servers.
jafrullahmAsked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Casey HermanCitrix EngineerCommented:
Drop to the command line and run

qfarm /load

Open in new window


I bet you will see that you have a high load on the server in question.

You can check your load balancing policy. See if you applied a different one to that server or you applied a single one by itself to that server somehow.

Check the qfarm /load first though to confirm.

-Casey
0
jafrullahmAuthor Commented:
It is just strange, it now has got the similar sessions as the other servers in Farm.   But earlier it was not the case. Not sure what was stopping the server before but it seems alright now.  I guess I will have to monitor it.

Btw, Load balace on this server is same as rest of the servers.
0
Casey HermanCitrix EngineerCommented:
Are your load balancers doing anything with disk IO?  I ran into that with mine. AV was scanning the spooler directories and when a user logged in and it was setting up print drivers it was triggering the LB to 10000

-Casey
0
Big Business Goals? Which KPIs Will Help You

The most successful MSPs rely on metrics – known as key performance indicators (KPIs) – for making informed decisions that help their businesses thrive, rather than just survive. This eBook provides an overview of the most important KPIs used by top MSPs.

jafrullahmAuthor Commented:
I am still having issue with this server.  It is taking connections but very very low.  When other servers had 40 sessions it has only 5 sessions.   Task manager shows normal cpu, disk performance and no process is taking too much cpu or memory.  No events at event logs related to this.   LB was under 1000 for very long time until it has just gone to 1011 with 5 sessions. Not sure what else to look at.
0
Casey HermanCitrix EngineerCommented:
Sounds like networking is the issue. Check vlans, firewall settings, DNS settings, DNS suffix, gateway and all that good stuff.

If you publish a test app to that server, does it respond as slowly as the others?

Is it virtual? Have your tried moving it to a different host?

Just some steps I would go through.

-Casey
0
jafrullahmAuthor Commented:
It has everything similar to other working servers as far as Networking components are concerned. They are all Physical Servers connected to same Vlan, same location.
Slow i meant was not taking time to launch published application, i meant taking very less apps but one at a time with much less apps in total compared to the other working servers in the same period of time.  All the apps are streamed apps published on all the servers.

I just tried to launch one test app and after few seconds I clicked on the icon again and it gives me the error " The task you are trying to do cant be completed because Remote desktop services is currently busy . pl try again in few minutes. Other users should still be able to logon"  It took a while and did not launch application.
0
Casey HermanCitrix EngineerCommented:
Have you installed this patch on the other servers and may have missed this one?

http://support.microsoft.com/kb/2383928

Also this problem has also been blamed on TCP offload.  You might try to disable it as a test.

Admin command prompt and type on a working server and then do the same on the problem server. Compare what you see.

netsh int tcp show global

To test

You can disable the chimney offload with this.

netsh int tcp set global chimney=disabled

Then reboot.

Set to enable to turn it back on if needed.

-Casey
0
jafrullahmAuthor Commented:
Hi Casey

    Above hotfix is not on this server and I did not find it on any other servers as well.  Strangely this server is a new built server and I could see lot of MS hotfixes missing.
I think the best thing is to install all the relevent MS Hotfixes on this server coming weekend as we have a scheduled hotfix installation for the rest of the servers and see if it resolves it automatically , if not then I will try above steps and disable global chimney.
Btw, chimney offload state is set to Automatic on all the servers. What is this for ?

Thanks..
0
Casey HermanCitrix EngineerCommented:
This tells the CPU to handle the network traffic which in some citrix specific documents it says to disable this for certain citrix applications.  It is worth a shot and easily turned back on.

-Casey
0
jafrullahmAuthor Commented:
I have asked our Server Team to hotfix this server , they said as per SCCM the hotfixes are gone to the server but when i logged into the server and went into installed updates, I dont see anything.  It looks like this server has some issues. I will try and get it fixed.
0
jafrullahmAuthor Commented:
Logged the call with Citrix Support and they said its the issue with the RDP stack and suggested to install 2008 r2 sp1 and ms hotfixes post sp1 , which resolved the issue.
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
jafrullahmAuthor Commented:
Logged the call with Citrix Support and they said its the issue with the RDP stack and suggested to install 2008 r2 sp1 and ms hotfixes post sp1 , which resolved the issue.
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Citrix

From novice to tech pro — start learning today.