Citrix Metaframe XPA FR3, Load Managers

[EvilPeppard]

I am using the built-in Advanced Load Evaluator. Is that the best to use, or should I configure a new one, and if so, what should the criteria be?

These servers currenly host about 160 concurrent sessions and I regularly get users complaining of screen latency. The server Load Monitor shows the servers all run at about 16% - 20% on average throughout the day, with occasional spikes. I have Speed Screen turned on for all the clients.

Any advice would really be appreciated. I will supply more information if needed. Thanks.

 

[ascotta]

How many servers you got and how many processors per server have you got.

Advanced load manager is best for single procs and default is best for multi procs, I believe.

Check the NIC's are hard set to LAN speeds and the chck processor queues.

Cheers
Scott

 

[EvilPeppard]

Well, I would like some concrete info, if at all possible.

I have 8 servers, all with 2GB RAM. 2 servers are dual 1GHZ, the rest are dual Xeon 2GHZ or higher.

I am running advanced Load Evaluators on all the servers now.

 

[ascotta]

Sorry if I was a bit vague its 9:30pm here!

As a rough rule of thumb

20 users per proc therfore you should have 8 processors minimum.

You have 16 which should eat it. Good load balanced environment.

You can set the NIC's to run at e.g 100Mb full duplex etc
or at auto detect. I would run them at the speed of your own network therfore they do not negotiate each packet onto the LAN.

As an extra thought when were they last re-booted ?
Memory leaks etc?

Can you isolate the users to a specific machine when this problem occurs.

Did I note that on another discussion you quoted 65 apps on the servers or was that someone else ?



Cheers
Scott

 

[EvilPeppard]

I'm actually not having any problems, I just want to make sure I have my load evaluators set correctly. I currently am using the Advanced ones. Is that the best to use or is there a better configuration.

Also, I have only set the load evaluators on the servers, not on any applications. Do I need to set load evaluators on applications as well?

 

[ascotta]

>>These servers currenly host about 160 concurrent sessions and I regularly get users complaining of screen latency. The server Load Monitor shows the servers all run at about 16% - 20% on average throughout the day, with occasional spikes. I have Speed Screen turned on for all the clients.>>


Sorry I was replying to this bit.

I would say that the advanced load evaluator on server is the way to go. If you start going as low as app level then you are over complicating matters. I answered a thread earlier this evening saying that I have never had to touch the load evaluators, I like keeping it simple. If your boxes perform the same then its working.

Cheers
Scott

 

[EvilPeppard]

Great, thanks. When I read about applying the load evaluators to applications, I thought I had a major oversight. I have all the servers set with the Advanced Load Evaluator.

I'm not sure why some users get the latency sometimes, but I guess there isn't much I can do until I add more servers.

Thanks again.

 

[ascotta]

I would have said you have sufficient servers just now!!

Lets say you lost one (i know big things are difficult to lose)

Thats 160 users spread over 7 servers. By rights you would still require 8 processors to service them so your 14 remaining should still happily ahem service them. Your crunch point comes if you lose 2 or 3 how remiss.


Cheers
Scott

 

[EvilPeppard]

Thanks again for the help. Sounds like I have the farm setup adequately.