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by 5e92cb50239222b 1093 days ago
https://lwn.net/Articles/929582

AFAIK Oracle employs major contributors to btrfs and XFS. I'm mostly interested in filesystems, so I can't speak for other subsystems (seems like they do a decent amount of work on core kernel development — the really important stuff like schedulers and the memory subsystem — second place just below Google).
1 comments
Conan_Kudo 1093 days ago
Oracle Linux is also not a pure RHEL clone. They customize it as they desire and ship it accordingly. For example, they have an alternative kernel for their distribution with different features.
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attentive 1093 days ago
But they also have RHEL native kernel version for version if you're to choose to run that instead. It's just that RHEL kernel is usually very old and UEK kernel has more modern features and improvements in it.

Overall while they have some extra packages available they are on top of RHEL clone and you don't have to use them.

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