SHIFT-WIKI - Sjoerd Hooft's InFormation Technology
This WIKI is my personal documentation blog. Please enjoy it and feel free to reach out through blue sky if you have a question, remark, improvement or observation. See below for the latest additions, or use the search or tags to browse for content.
Vmware CPU Management and Performance
Summary: Background and practical tips on VMs CPU Management & Performance.
Date: Around 2014
Refactor: 1 May 2025: Checked links and formatting.
On an ESX server run multiple virtual machines which are all competing for the same resources. The first resources that are obvious to the end user if underperforming are CPU and memory. In two articles I will explain a little bit about what lies beneath, and then how to find out what is causing the decreased performance. Of course, you should always keep in mind that performance issues are subjective to the end users view. Some users will complain about their systems being slow just on a feeling that “it was faster yesterday”, and they have no benchmark to prove it. Sometimes how ever they can show you that the number of processed transactions in their database is down, or throughput on their file or web server is down.
VMWare Client Auto Authentication
Summary: This is a tutorial on configuring auto authentication towards vCenter on the old vSphere client before everything was changed to a web client.
Date: Around 2013
Refactor: 4 January 2025: Checked links and formatting.
AIX Root Password Policy
Summary: ALthough AIX is by now on version 7.3 I find these old pages so fascinating I decided to keep them. On this page I'll show you how to work with your root password once you've configured your users to authenticate with ldap. This page is for AIX 5.3 and AIX 6.1.
Date: Between 2010-2013
Refactor: 21 December 2024: Checked formatting.
VMware BIOS Options
Summary: How to configure boot options on vSphere VMs.
Date: Around 2014
Refactor: 1 May 2025: Checked links and formatting.
Do you also think that the boot screen is gone before you know it in VMware. Ever tried to boot into the BIOS and you couldn't do it because the boot screen was already gone when you got control of the keyboard?
This is your solution:
The first setting here is in milliseconds how long the boot screen will stay, but the second one is even more handy. Check the box to make sure the VM boots into bios on next boot. How nice is that!