By Michele Casey on Oct 02, 2013
We are happy to announce the availability of the release candidate for the Unbreakable Enterprise Kernel Release 3 for Oracle Linux 6. The Unbreakable Enterprise Kernel Release 3 (UEK R3) is Oracle's third major release of its heavily tested and optimized operating system kernel for Oracle Linux 6 on the x86_64 architecture. It is based on the mainline Linux version 3.8.13.
The release candidate version is 3.8.13-16 and includes additional improvements and bug fixes in preparation for our final release. As a recap, the features users can expect in this release include:
- Inclusion of DTrace for Linux into the kernel (no longer a separate kernel image). DTrace for Linux now now supports probes for user-space statically defined tracing (USDT) in programs that have been modified to include embedded static probe points.
- Btrfs file system improvements (subvolume-aware quota groups, cross-subvolume reflinks, btrfs send/receive to transfer file system snapshots or incremental differences, file hole punching, hot-replacing of failed disk devices)
- Improved support for Control Groups (cgroups) and Linux containers (LXC).
- The ext4 file system can now store the content of a small file inside the inode (inline_data).
- TCP fast open (TFO) can speed up the opening of successive TCP connections between two endpoints.
The Unbreakable Enterprise Kernel Release 3 can be installed on Oracle Linux 6 Update 4 or newer, running either the Red Hat compatible kernel or a previous version of the Unbreakable Enterprise Kernel. The UEKR3 beta kernel packages and supporting userland utilities can be installed using the yum package management tool from the public-yum server.
We've created a dedicated public beta test discussion forum — please join us and share your observations and impressions there!