• A 15 percent smaller kernel package can provide up to 30 percent faster kernel boot speed.
  • Full support for Elastic network adapter (ENA), including driver version 1.1.2. Supports up to 20 Gbps network speeds for ENA instances types (currently I3, R4, X1, and M4.16xlarge).
  • Improved i3 instance support with NVMe storage drives under high IO loads.
  • Increased I/O performance in i3 instances
  • Improved instance initialization using NVMe-backed storage disks
  • To eliminate deadlocks on certain instance types, disable CONFIG_NO_HZ_FULL
  • Resolved CPU Throttling with AWS micro instances

It is available in a free version and three for-pay options. These options provide different levels of support and other services. Nachmany stated that instances running the AWS-tuned Ubuntu core will be supported by the company’s Ubuntu Advantage service. However, they won’t be able to support the Canonical Livepatch Service which allows developers to apply critical kernel patches without the need for a reboot. Nachmany stated that “investigation is underway in order to evaluate delivery of the service for users of AWS-tuned Ubuntu Kernel.” Livepatch can still be used if you prefer stability to speed. You can also revert to the old kernel. Developers can explore the details of the version 4.4.0-1013.22 kernel that underpins the AWS-tuned Ubuntu distribution at the linux-aws package site. AWS supports many other Linux distros such as CentOS, Debian Kali, Red Hat, Red Hat, and SUSE.