I got a question around VM Monitoring (aka virtual machine level HA) this week. A customer wanted to test if VM Monitoring worked and as such disabled the NIC of the virtual machine and waited for 30 seconds for the VM Monitoring response to kick in…. nothing happened. VM Monitoring restarts individual virtual machines when needed. VM monitoring uses a [...]

I received a couple of questions around my esxtop article yesterday so I guess it wasn’t completely clear what “locked” meant. I had a difficult time understanding it myself but I was fortunate enough that one of my colleagues (Thanks Valentin) got to the bottom of it and emailed me the following explanation. I rewrote parts of it and this [...]

One of my colleagues (Thanks Horst) pointed me to this option I had never noticed with ESXTOP “-l”. The option has been added to avoid high CPU utilization as the result of a large amount of LUNs during collection of the storage statistics. kb 1005894 Add a lock mode (-l) to esxtop to help optimize CPU utilization. In a large [...]