Re: Hugepages question with multiple instances on 1 host
- From: Nuno Souto <dbvision@xxxxxxxxxxxx>
- To: oracle-l@xxxxxxxxxxxxx
- Date: Tue, 30 Apr 2013 20:27:18 +1000
I understand it is provided in Solaris. Question is: how automatic is
it then?
As in: all Oracle instances grab 4M pagesize for SGA?
Or does the Oracle executable have to be pre-configured with the wanted
size using ppgsz(1)?
Is 4M the default size? And is there an option to say some instances
use larger page sizes, some don't?
--
Cheers
Nuno Souto
dbvision@xxxxxxxxxxxx
On 30/04/2013 7:04 PM, Radoulov, Dimitre wrote:
> On 30/04/2013 09:28, Nuno Souto wrote:
>> [...]
>> Wonder if someone with Solaris experience on this could come up with a
>> similar page so we got most *n*xes covered?
> With Solaris it should be automatic,
> see www.solarisinternals.com/wiki/index.php/Multiple_Page_Size_Support
> and www.linkedin.com/groups/Solaris-Huge-pages-60651.S.78812448.
>
> Oracle 11.2 on Solaris 10 (the Pgsz column):
>
> $ uname -sr
> SunOS 5.10
> $ pmap -sx 10693 | nawk 'NR == 2 || $6 ~ /[MG]/'
> Address Kbytes RSS Anon Locked Pgsz
> Mode Mapped File
> 0000000100000000 151552 151552 - - 4M r-x--
> oracle
> 0000000109C00000 36864 36864 - - 4M r-x--
> oracle
> 0000000380000000 2097152 2097152 - 2097152 -2G
> rwxsR [ ism shmid=0x47000064 ]
> 0000000400000000 1048576 1048576 - 1048576 256M
> rwxsR [ ism shmid=0x47000064 ]
> FFFFFFFF7D800000 4096 4096 - - 4M r-x--
> libhasgen11.so
>
>
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