05 Optimizing the XenApp Environment

Performance Tuning Guidelines for Windows Server 2008

http://msdn.microsoft.com/en-us/library/windows/hardware/gg463394.aspx

Service overview and network port requirements for Windows

http://support.microsoft.com/kb/832017

Virus scanning recommendations for Enterprise computers that are running currently supported versions of Windows

http://support.microsoft.com/kb/822158

Defragmentation - use Performance Monitor - % Disk Read Time & % Disk Write Time in the PhysicalDisk and LogicalDisk objects. If XenApp servers are virtualized, follow defragmentation documentation from the hypervisor and storage vendors.

Policy Processing and Precedence

http://support.citrix.com/proddocs/topic/xenapp65-admin/ps-policies-creating-wrapper-v2.html

Policy Configuration Methods

There are 3 ways, although all are valid, Citrix recommends using only one.

If a combination of methods is used, the recommended order is:

1. Group Policy Management Console

2. AppCenter (Citrix Delivery Services Console / Citrix Management Console)

3. Local Group Policies

XenApp tuning - Data Collectors

- Each zone should have a designated Most Preferred data collector.

- Each zone should have a backup data collector; keep this server lightly loaded.

- Published applications should run on servers that are not data collectors.

Application streaming optimalization

Troubleshooting Application Streaming Issues

http://support.citrix.com/article/CTX113304

How to Use Raderun to Manually Stream an Application

http://support.citrix.com/article/CTX115191

Application Streaming Launch Tool

http://support.citrix.com/article/CTX126674

Streaming cache size is 5% or 1GB minimum

Install Root - %ProgramFiles%\Citrix\RadeCache - use ClientCache.exe

User Root - %AppData%\Citrix\RadeCache

Virtual Memory Optimization Feature

http://support.citrix.com/article/CTX106023

Not all applications can be rebased through virtual memory optimization.

The CPU Utilization Management Feature and the CPU Rebalancer Services

http://support.citrix.com/article/CTX106021

XenApp Planning Guide - Virtualization Best Practices

http://support.citrix.com/article/CTX129761

Virtual Machine Sizing Guidelines

Sockets	Cores / Socket	Hyper Threading	Logical Cores / Socket	Logical Cores / Server	VM Count	vCPU per VM	RAM per VM
2	2	No	2	4	2 VMs	2 vCPUs	8GB
2	2	Yes	4	8	2 VMs	4 vCPUs	16GB
2	4	Yes	8	16	2 VMs	8 vCPUs	32GB
4	2	Yes	4	16	4 VMs	4 vCPUs	16GB
4	4	Yes	8	32	4 VMs	8 vCPUs	32GB