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Monthly Archives: July 2015

Queues, Queues and more Queues

Introduction to Queues Sizing
Proper queues sizing is a key element in ensuring current database workloads can be sustained and all SLA’s are met without any processing disruption.

Queues
Queues are often misrepresented as the very “bane of our existence” and yet queues restore some order of semblance to our chaotic life.

Imagine what would have happened if there were no queues?

Chaos

Disorder, chaos, anarchy: now that’s fun! – DAVID J. SCHOW, The Crow

Much has been written about Virtualization & Storage queues, excellent blog articles by Duncan Epping, Cormac Hogan and Chad Sakac go through in depth about the various queues.

What this article tries to endeavor is to illustrate, with a simple example, the fallacy in presuming that queue tuning only needs to be done at the Application level and that it’s okay to ignore storage physical limitations. Continue reading