The Note on RHEL 5.4 or CentOS and divider=10 mentions that you do not need this for RHEL 5.4 for accurate timekeeping, but you do need it to prevent the excessive CPU use. I took out quiet because I like to see what's happening when the system boots. Making the following modification to /etc/nf on RHEL5 brought my CPU usage down from 100% to barely noticeable: Once the software package has been downloaded, you should find it in your default download directory. Sure enough, Timekeeping Best Practices for Linux Guests has some hints, and for more information than you'll ever want, try Timekeeping in VMWare Virtual Machines (I was particularly interested in the Clocksource Kernels section). Because of this, I suspected the time management in the kernel was off. Additionally, on one VM top was displaying in near-real-time, which was kind of neat but I doubt the intended behavior. I noticed that even at idle, each VM was taking up a high amount (like 100%!) of a CPU core.
Let’s take a closer look at all of these options. There are several different ways you can implement Kali Linux on VMware such as VMware Workstation Player, VMware Workstation, VMware Fusion, VMware ESXi, and VMware vSphere. As part of my testing setup, I have an Intel Mac Pro with Mac OS X 10.6 Server (which runs with the 64-bit kernel) on which I run VMWare Fusion 3.0.1 and several Red Hat virtual machines. Kali Linux VMware is an instance of the Kali Linux distribution running on a VMware based virtual machine.
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