[CentOS] Transparent HugePages question

Laurentiu Soica
Wed, 24 Aug 2016 18:49:59 -0000

So basically you're saying that this THP feature is broken for CentOS 7 ?
The feature is enabled by default. Is there a thread opened on this issue ?

?n mie., 24 aug. 2016 la 18:13, <m.roth at 5-cent.us> a scris:

> Laurentiu Soica wrote:
> > Hello,
> >
> > I have a CentOS 7 installation on baremetal with 2 CPUs, 10 cores each
> and
> > HT enabled, 128 GB RAM.
> >
> > The system has transparent hugetables enabled.
> <snip>
> > So it turns out that even is I have the THP enabled the pages still
have
> a
> > size of 4K .
> >
> > Is there any extra setup in order to get 2MB pages ?
> >
> Be aware that with transparent huge pages enabled - I'm trying to
remember
> what error you might get - it may be the "CPU blocked for x 120
seconds",
> as it deals with the page.
>
>         mark, back from vacation
>
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--
Laurentiu Soica