For example, directing traffic handling to use the hosts CPU rather than using the network stack resources.
Without RSS it could be artificially limited. Changing these settings requires a reboot. Similarly, if possible also ensure Citrix Single Sign-on is first in the Provider Order on the clients. Many vendors will recommend their product be top of the order, so this may not be possible. Setting this on end user devices will likely need to be set centrally, this can be done via the registry e. Again, a reboot will be required. This can also be set via Group Policy. Citrix provide a list of recommended Citrix and Microsoft hotfixes which can be crucially important.
In an environment I worked in recently, we discovered several launch issues which were being caused by heavy NetBIOS traffic on the client devices. We detected this using a simple Wireshark trace on clients exhibiting the issue and filtering the output to show nbns.
The slowness was not just experienced on launch either; if you reset the Citrix Receiver the desktop shortcuts would come back very, very slowly and one at a time rather than all at once. It appeared that the traffic was related to WPAD.
Setting up a WPAD server did resolve the issue but was not required, this issue is best handled by your network team. They should know how to best handle this for your network. Ensure all relevant firewall port settings have been set correctly!
Also ensure anti-virus exclusions have been granted both at the server and client level. This one is a little less black and white. There are of course recommended policies, such as for printing performance but policies are a very org specific thing.
A somewhat obvious pointer is to ensure your AD is not a mess! Both from an infrastructure perspective how many domain controllers in your environment, where are they located, are they working well? How about replication? If, say for example you have a tonne of group policies which need to be filtered through on each login, of course this will result in a slow launch for users.
Manage your profiles!! This is invaluable to troubleshooting efforts because it becomes easy to identify patterns over time that help pinpoint root cause quickly. Goliath can take what might otherwise be an extraordinarily difficult troubleshooting task and reduce it to a few mouse clicks, all the while maintaining a focus on improving the end-user experience.
Troubleshooting Requires Visibility Goliath provides complete end-to-end visibility into the underlying virtualization delivery infrastructure, including specific details on the end user — all from a central console. Troubleshooting Requires Embedded Intelligence and Automation A good troubleshooting tool will automatically and intelligently map out your entire infrastructure to deliver end-to-end visibility around the health of your system. Automatic mapping your entire Citrix infrastructure to visualize connections, relationships, and health of components.
Ability to easily switch views to different data centers or locations. Correlation of end-user experience issues to delivery infrastructure components and overall health of the system.
Context-sensitive metrics and alerts for selected components. Troubleshooting Logon Initiation Goliath is an early-warning system that specifically solves logon initiation problems.
Highlight of where the issue occurred during logon. As an IT manager, your quest is to make your IT environment run smoothly. Citrix application and desktop virtualization is good stuff.
It just has to be architected and managed properly. From what we see every day in our work with firms large and small across the country, here are the top 5 reasons Citrix is slow:. Citrix is slow and you want to fix it. But is it really Citrix? Perhaps the problem actually lies in any of the 13 systems that Citrix relies on to complete the delivery experience as part of your overall infrastructure.
A slow Citrix environment can be attributable to any one of these infrastructure pieces gone awry. Often, a remediation will get a slow Citrix XenApp or XenDesktop environment back on track, but not always. To deliver Citrix services, many infrastructure tiers may be involved, including Active Directory, storage, drive mappings, hypervisor and more.
Asking the right questions when a user call comes in is very important and having a very good understanding of the environment is invaluable for rapid problem resolution. First check the Citrix Storefront server for performance issues, but if the server is ok then consider the fact that there could be an authentication issue to Active Directory, slow group policy GPO processing, a DNS problem, or even a potential network issue.
First evaluate the Citrix server that the user is connected too, but if that is not the cause then non-Citrix interdependencies should be evaluated.
For example, external storage could be experiencing an IOPS bottleneck. Also keep in mind that there could also be a problem in the application backend causing latencies For example, a human resources application database server is down or running slow.
Always analyze the Citrix environment first, but when you have disproved Citrix as the root cause consider other interdependencies. For example, investigate the services and scripts that run when the VM boots up, evaluate the operations that happen when group policy GPO is applied, check if there could be a DNS problem, or even a network issue.
There could also be a resource contention issue within the hypervisor that hosts your virtual machines, or the storage that it uses. For this one I would not start with the Citrix logon, but I would first determine if there are issues with other corporate resources on these machines.
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