CPU Ready Queue

Why Trust Techopedia

What Does CPU Ready Queue Mean?

A CPU ready queue is a queue that handles jobs or tasks for eventual scheduling with a processor. The term is often used in virtualization setups, where IT professionals try to determine whether resources have been allocated well and whether different components of the system can work efficiently.

Advertisements

Techopedia Explains CPU Ready Queue

The key in hardware virtualization is that engineers or administrators assign CPU processing resources to each virtual machine (VM). This inherently involves sharing the processing power, which takes the form of various tasks on various machines waiting for a scheduler to assign them CPU time.

What the CPU ready queue does is to order these transactions in a way that is transparent. Administrators use metrics like “CPU ready” (%RDY) or markers like “%ready/%RDY” to understand how long it is taking VMs to access a processor through the provisioning of a virtual CPU (vCPU). There are certain thresholds for this that help observers evaluate whether to change the system. Percent ready (%ready) values higher than 5% often indicate problems with CPU limits, CPU affinity, oversized VMs, VM clustering or improper allocation of the vCPU. IT professionals who get a view of these problems try to fix them by recalibrating the system.

Advertisements

Related Terms

Margaret Rouse
Technology Expert
Margaret Rouse
Technology Expert

Margaret is an award-winning technical writer and teacher known for her ability to explain complex technical subjects to a non-technical business audience. Over the past twenty years, her IT definitions have been published by Que in an encyclopedia of technology terms and cited in articles by the New York Times, Time Magazine, USA Today, ZDNet, PC Magazine, and Discovery Magazine. She joined Techopedia in 2011. Margaret's idea of a fun day is helping IT and business professionals learn to speak each other’s highly specialized languages.