Re: Hugepages usage

Thanks Andrew. What is 'Anonymous Hugepages'. Is it the same as Transparent Huge Pages that Oracle recommends to disable <https://docs.oracle.com/en/database/oracle/oracle-database/19/unxar/administering-oracle-database-on-linux.html#GUID-02E9147D-D565-4AF8-B12A-8E6E9F74BEEA> ?

On Mon, Feb 10, 2020 at 5:05 PM Andrew Kerber <andrew.kerber_at_gmail.com> wrote:

> You are correct, if the DB is up and running and all the huge pages are
> free as shown here, they are not being used. Anonymous hugepages should be
> disabled for all oracle servers.
>
> Sent from my iPad
>
> > On Feb 10, 2020, at 17:03, Ram K <lambu999_at_gmail.com> wrote:
> >
> > 
> >
> > Hi,
> >
> > I came across this setting in a Linux server running oracle 12.
> >
> > grep Huge /proc/meminfo
> > AnonHugePages: 43008 kB
> > HugePages_Total: 12288
> > HugePages_Free: 12288
> > HugePages_Rsvd: 0
> > HugePages_Surp: 0
> > Hugepagesize: 2048 kB
> >
> > Does this mean that hugepages are not being used since all the Hugepages
> are free?
> > How can I find out if hugepages were ever used, to make sure I am not
> looking at an isolated time period when it is not being used.
> >
> > --
> > Thanks,
> > Ram.
>

-- 
Thanks,
Ram.

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