rpms/kernel
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Switch to CONFIG_TRANSPARENT_HUGEPAGE_MADVISE instead of always on

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The benefit of THP has been somewhat questionable overall for a while,
and it's been known to cause performance issues with some workloads.
Upstream also considers it to be overly complicated and really not worth
it on machines with memory in the amounts found on typical desktops/SMB
servers.

Switch to using it via madvise, which most applications that care about
it should likely already be doing.
This commit is contained in:
Josh Boyer 2014-03-27 18:31:16 -04:00
parent 5b9ddb97b7
commit 9a031d5070
2 changed files with 4 additions and 0 deletions
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1
config-x86_64-generic
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@ -37,6 +37,7 @@ CONFIG_SWIOTLB=y
# CONFIG_GART_IOMMU is not set # CONFIG_GART_IOMMU is not set
CONFIG_TRANSPARENT_HUGEPAGE=y CONFIG_TRANSPARENT_HUGEPAGE=y
CONFIG_TRANSPARENT_HUGEPAGE_MADVISE=y
CONFIG_CGROUP_HUGETLB=y CONFIG_CGROUP_HUGETLB=y
CONFIG_MEM_SOFT_DIRTY=y CONFIG_MEM_SOFT_DIRTY=y

3
kernel.spec
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@ -2068,6 +2068,9 @@ fi
# ||----w | # ||----w |
# || || # || ||
%changelog %changelog
* Thu Mar 27 2014 Josh Boyer <jwboyer@fedoraproject.org>
- Switch to CONFIG_TRANSPARENT_HUGEPAGE_MADVISE instead of always on
* Tue Mar 25 2014 Josh Boyer <jwboyer@fedoraproject.org> - 3.14.0-0.rc8.git0.1 * Tue Mar 25 2014 Josh Boyer <jwboyer@fedoraproject.org> - 3.14.0-0.rc8.git0.1
- Linux v3.14-rc8 - Linux v3.14-rc8
- Disable debugging options. - Disable debugging options.