Public bug reported: 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 threads 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 configs. ** Affects: linux (Ubuntu) Importance: High Status: New ** Tags: kernel-4.8 ** Tags added: kernel-4.8 ** Changed in: linux (Ubuntu) Importance: Undecided => High -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1626564 Title: 4.8 regression: SLAB is being used instead of SLUB To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1626564/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs