Hi,
I think the main reason for considering hugepages for ASM is not the
reduction of the footprint of the page table, but the fact that SGA
wouldn't be swapped out when hugepages are used, which is good enough
reason to use them even for ASM
---
Maris Elsins
@MarisElsins <https://twitter.com/MarisElsins>
On Sun, Oct 9, 2016 at 9:10 PM, Franck Pachot <franck@xxxxxxxxxx> wrote:
Hi,
In Exadata Database Machine 11.2.0.4 Grid Infrastructure and Database
Upgrade for 11.2.0.2 BP11 and earlier (Doc ID 1555036.1)
<https://support.oracle.com/epmos/faces/DocContentDisplay?id=1555036.1#aref_section226>
You can read: Allocate additional hugepages so that both ASM and database
instance can use hugepages
Regards,
Franck.
On Sun, Oct 9, 2016 at 7:40 PM Sanjay Mishra <dmarc-noreply@xxxxxxxxxxxxx>
wrote:
Thanks Mark for the update. I can see that Oracle provided script to
suggest for hugepage parameter recommendation is also not taking ASM memory
in the picture. So looking for comment from others based on their
experience appreciate your feedback
Tx
Sanjay
On Sunday, October 9, 2016 1:29 PM, Mark J. Bobak <mark@xxxxxxxxx> wrote:
Hi Sanjay
My opinion, you can use huge pages for ASM if you wish, but don't
bother. It's not generally enough memory to make much of a difference.
Huge pages for RSBMS, on the other hand, is an absolute must. I blogged
on this topic a few years ago.
https://www.google.com/amp/s/markjbobak.wordpress.com/2014/
01/21/if-youre-not-using-hugepages-youre-doing-it-wrong/amp/
-Mark
On Sun, Oct 9, 2016, 13:21 Sanjay Mishra <dmarc-noreply@xxxxxxxxxxxxx>
wrote:
Hi
Can anyone provide insight if you are using Hugepages for ASM as well as
RDBMS on your 11gR2 (11.2.0.3) onwards or if you are using AMM for ASM and
hugespages for RDBMS. ?
Saw various Oracle Article saying to use AMM for ASM and Hugepages with
ASMM with RDBMS. Please update your opinion and recommendation
Regards
Sanjay
