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Printers and their impact on logon duration

2019-03-05
Improve logon duration by find out about how long printers take to add to a session.

Citrix Logon Simulator’s – Part 2

2019-02-06
In my previous post I was looking at utilizing a Logon Simulator to setup some proactive monitoring of a Citrix environment.  I setup some goals for myself: Minimize the number of VM’s to run the robots As little resource consumption as possible Still provide operational alerts Operate on-premise I want the footprint of these robots […]

Citrix Logon Simulator’s – Part 1

2019-02-04
“Help!  I can’t launch my application!” “Is something wrong with Citrix?” “Hey man, I heard Citrix was down?” “Can you help? I need to get this work done!  The deadline is today and I can’t open my app!” Welcome to the world of a Citrix Administrator.  If an application stops working then the calls flood […]

Citrix PVS Image Management Design Challenges – Case Study

2018-10-29
Challenge: Different applications have differing levels of operating system support.  A vendor might only support their app on a specific operating system, or multiple /older/ operating systems, or the organization hasn’t updated to a new version that supports the new OS; whether because the new version has a cost attached to upgrading the org cannot […]

Meltdown + Spectre – Performance Impact Analysis (Take 2)

2018-09-14
I want to start this off by thanking ControlUp, LoginVSI and Ryan Ververs-Bijkerk for his assistance in helping me with this post. Building on my last evaluation of the performance impact of Meltdown and Spectre, I was graciously given a trial of the LoginVSI software product used to simulate user loads and ControlUp’s cloud based […]

User Profile Manager – Unavoidable Delays

2018-06-30
https://twitter.com/TrententTye/status/1011396648688185344 I’ve been exploring optimizing logon times and noticed “User Profile Service” always showed up for 1-3 seconds.  I asked why and began my investigation. The first thing I needed to do is separate the “User Profile Service” into it’s own process.  It’s originally configured to share the same process as other services which makes […]

Citrix Provisioning Service – Network Service Starting/Stopping services remotely

2018-05-02
Citrix Provisioning Services has a feature within the “Provisioning Services Console” that allows you to stop/restart/start the streaming service on another server:   This feature worked with Server 2008R2 but with 2012R2 and greater it stopped working.  Citrix partially identified the issue here:   I was exploring starting and stopping the streaming service on other PVS […]

Meltdown + Spectre – Performance Analysis

2018-04-30
Meltdown and Spectre (variant 2) are two vulnerabilities that came out at the same time, however they are vastly different.  Patches for both were released extremely quickly for Microsoft OS’s but because of a variety of issues with Spectre, only Meltdown was truly available to be mitigated.  Spectre (variant 2) mitigation had a problematic release, […]

Group Policy Preferences Registry Extension vs Group Policy Registry Extension

2018-04-11
In various discussions I’ve read about the drawbacks of Group Policy Preferences but is it really that bad?   …Or is it how you are using it?   There are two methods of applying registry keys/values with Group Policy.  The Group Policy Registry Extension is the “traditional” form of applying policies.  Also known as ADM […]

Group Policy – Monolithic vs Functional Design and Performance Evaluation

2018-04-09
Group Policy Design is a hotly discussed topic, with lots of different ideas and discussions.  However, there is not a whole lot of actual metrics.  ADM and ADMX templates apply registry keys in an ‘enforced’ manner.  That is, if you or the machine has access to read the policies, the registry keys within are applied. […]

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