..plus SLUB improves boot speed - I'm seeing ~1 second shaved off an 8.5
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4.8 regression: SLAB is being used instead of SLUB
Status in linux package in Ubuntu:
Status in linux source package in Yakkety:
We're seeing hundreds of kernel worker threads being spawned with some
actions, for example, after booting the desktop and hutting the
brightness keys causes this. On investigation, this occurs when
CONFIG_SLAB is being used.
1. Ubuntu traditionally uses CONFIG_SLUB, so we should use that instead of
CONFIG_SLAB (why was it changed for Yakkety?)
2. With CONFIG_SLUB I cannot reproduce the issue of the hundreds for worker
3 CONFIG_SLUB seems more performant on the boot too over SLAB.
Please re-enable the CONFIG_SLUB allocator as per the 4.4. Xenial
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