Ready Queue is the percentage of time that there is work to be done for VMs, but no physical CPU (Central Processing Unit) available on which to do it (i.e., all host CPUs are busy serving other VMs). 

So, if you have 5 VMs with 4 VCPUs, and they’re on a 16 CPU host, that means that no more than 4 VMs can run a process at the same time.  One of those VMs has to wait in a ready queue.  

It is an on-prem commodity in the Turbonomic market, meaning it can be bought and sold. 

Recommend is an Action Mode that directs Turbonomic to post only the actions that it generates, so you can review them and then execute the ones that are safe to execute outside the Turbonomic user interface (for example, from the given hypervisor).

Turbonomic posts the generated actions in the Pending Actions chart.

A Regular Expression (Regex) is a string of letters and symbols (sometimes numbers) that defines a search pattern. 

Turbonomic supports Regular Expressions to define groups and filter Search results.

Remaining GC Capacity is the percentage of CPU time not spent on garbage collection (GC).

Turbonomic uses this metric in conjunction with Heap Utilization when making scaling decisions for Application Component entities.

The Repository is component of the Turbonomic platform that stores source topology (from the Topology processor) and projected topology (from the Market), as well as handles Supply Chain queries.

The data for the Repository component is stored in a graph database called ArangoDB.

A Reserved Instance (RI) is a reservation of cloud resources and capacity purchased at a set price for a given time period. Unlike on-demand pricing, when you purchase a reservation, you commit to paying for all of the hours of the contract’s term. As a benefit, the hourly rate is lowered significantly. 

Turbonomic can help determine how many RI’s to purchase, if any. It can also optimize utilization of the RI inventory, assuring the best RI coverage and a good return on your RI investment.

Pricing is determined by the specific cloud provider. Cloud providers use their own factors to measure RI capacity so you can combine that capacity for different template families. See Normalized Factor Unit (nfu) and RI Ratio

Response Time is the measure of time between request and response on an Application Component entity, measured in ms. For Turbonomic analysis, you set the response time capacity in Application Component policies.

REST is an acronym for REpresentational State Transfer. It is an architectural style for distributed hypermedia systems, and was first presented by Roy Fielding in 2000.  

Turbonomic exposes its functions and capabilities via the Turbonomic REST API.

Return on Investment (ROI) is the calculation an entity makes in each Turbonomic market cycle to decide what action, if any, it wants to take.  ROI equals Revenue divided by Expenses.

For hosts, If ROI is less than 1, the host will remain the same or suspend (after all Virtual Machines move off it). If ROI equals more than 1, the host is considered to be profitable, and might decide to clone itself.

For Virtual Machines (VMs), if ROI equals less than 1, the VM is considered to be unprofitable, and might downsize. If it equals more than 1, the VM is considered to be profitable and might decide to upsize.