From PC World: While getting the best performance from your systems is crucial, getting consistent performance is even more important, because it guarantees a satisfactory user experience and even sets the stage for building more capabilities on top of the system, Amazon Chief Technology Officer Werner Vogels said Thursday at the AWS re:Invent 2013 user conference in Las Vegas.
“If you improve consistency of performance, then it is easy for you to build your application,” Vogels said.
Vogels launched into the discussion of consistency and performance as a way of explaining a new type of Amazon EC2 (Elastic Cloud Compute) computing instance, called I2, that will offer guaranteed I/O (input/output) performance. That means Amazon guarantees the speed at which data is written to data stores, as well as the speed at which it is read from these data sources to the customer’s application.
“If you care about performance, it’s all about the I/O. The most important thing is not that you get the highest possible I/O, but that you get consistent performance,” Vogels said. “If you get consistent performance, you can build on top of that.”
Amazon did not define what the abbreviation I2 stands for, though the service was developed to meet growing customer demand for more IOPS (input/output operations per second) on EC2, said Ariel Kelman, the head of worldwide marketing for AWS, in a follow-up interview.
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