My ramblings on the stuff that holds it all together
Troubleshoot IaaS performance problems in Azure
Given in the public cloud you’ve not got much visibility of what’s going on under the hood in your IaaS VMs this is a handy tool from MSFT – instructions and downloads here
Or you can install it from the Azure portal by following these steps (You’ll need the name and key for one of your storage accounts.
If you install it via the portal you don’t have to login to the VM to enable it.