AWS General purpose VMs history - Storage Bandwidth



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I/O Per Seconds is one of the most used value to evaluate the performance of a volume, raw SSD, magnetic or Block Storage. The average and maximum IOPS gives a good preview of what will be the speed of a database or any disk-intensive task.

To measure IOPS, we use the well known tool Flexible I/O Tester (FIO) the following configuration:

  • 4KB blocks
  • Random access
  • Read then Write
  • Direct access to device without filesystems
  • libaio engine

For the sizes we selected, a base line 3,000 IOPS but Google and Oracle perform at a higher level of 25,000 IOPS approaching the nowadays standard of NVMe.

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