Comment 2 for bug 1509304

Good summary of the possible performance improvements here:

http://events.linuxfoundation.org/sites/events/files/slides/p0.pp_.pdf

Ofcourse the random read/write tests arn't particularly realistic for actual workloads. The correct value is going to be dependent on the guest workload rather than the cloud operator. Although I agree that the cloud operator could set the cache value to something much higher than 1MB without any downside?

Regardless shouldn't this be made in to a blueprint as its a feature request rather than a bug? Especially since it could be adding new operator configuration options.