disable many ACPI features
Bug #1689372 reported by
Kamal Mostafa
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux-aws (Ubuntu) |
Fix Released
|
Undecided
|
Kamal Mostafa | ||
Bug Description
Many ACPI features can be disabled, per Colin King's research.
Colin King has demonstrated measurable boot speed improvements (up to 3%)
by disabling many ACPI features not used by cloud kernels. That work also
allows us to unhook additional unused subsystems (Nouveau, gpiolib, pincntrl).
Disk space utilization of the kernel is reduced:
/boot by ~200KB
/lib/modules by ~170 Kb
CVE References
description: | updated |
Changed in linux-aws (Ubuntu): | |
status: | In Progress → Fix Committed |
tags: | added: verification-done-xenial |
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Colin and I have concluded that ACPI_VIDEO cannot be easily disabled in Xenial, but most other unused ACPI subsystems can be.