Messages in this thread | | | Date | Wed, 6 Mar 2019 12:44:53 +0100 | From | Michal Suchánek <> | Subject | Re: [PATCH 2/2] mm/dax: Don't enable huge dax mapping by default |
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On Wed, 06 Mar 2019 14:47:33 +0530 "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> wrote:
> Dan Williams <dan.j.williams@intel.com> writes: > > > On Thu, Feb 28, 2019 at 1:40 AM Oliver <oohall@gmail.com> wrote: > >> > >> On Thu, Feb 28, 2019 at 7:35 PM Aneesh Kumar K.V > >> <aneesh.kumar@linux.ibm.com> wrote:
> Also even if the user decided to not use THP, by > echo "never" > transparent_hugepage/enabled , we should continue to map > dax fault using huge page on platforms that can support huge pages.
Is this a good idea?
This knob is there for a reason. In some situations having huge pages can severely impact performance of the system (due to host-guest interaction or whatever) and the ability to really turn off all THP would be important in those cases, right?
Thanks
Michal
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