[dpedu]

I don't think the AWS side of your test is a good example.

https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/EBSVolum...

You will never get more than ~3,000 iops on a 256GB gp2 disk because the IOP cap for gp2 type disks of this size is 768 or 3,000 iops. Yes, "or". If you ran the test above for longer, you'd find that the iops will eventually drop to the baseline of 768 (which is the size of your disk multiplied times 3). Or, if you test a much larger gp2 volume you'll see higher numbers as well. Check out the description of the "burst bucket" in the link above.

[halbritt]

This is why I tend to like GCP SSD persistent disk. For a 333GB disk I get ~10k IOPS consistently. It's $.17/GB vs. $.10/GB for EBS GP2, but still way cheaper than IO1.