RE: Prevent ASM from using any hugepages

From: CRISLER, JON A <JC1706_at_att.com>
Date: Fri, 17 May 2013 19:16:55 +0000
Message-ID: <9F15274DDC89C24387BE933E68BE3FD30D8473F4_at_MISOUT7MSGUSR9D.ITServices.sbc.com>

Starting in 11.2.0.2 you can set a parameter to regulate hugepages usage, including to ONLY use hugepages. I.E. if hugepages is not available, do not start up instance. USE_LARGE_PAGES To Enable HugePages In 11.2 [ID 1392497.1]

-----Original Message-----
From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org] On Behalf Of Oleksandr Denysenko Sent: Friday, May 17, 2013 3:09 PM
To: Christopher.Taylor2_at_parallon.net
Cc: oracle-l_at_freelists.org; ora_kclosson_at_yahoo.com Subject: RE: Prevent ASM from using any hugepages

Taylor,
ASM uses memory anyway so why not give hugepages to it ? I see at least one benefit - if there will be paging on the system your ASM's SGA will not be paged out.

Oleksandr Denysenko
17.05.2013 21:56 ÐÏÌØÚÏ×ÁÔÅÌØ <Christopher.Taylor2_at_parallon.net> ÎÁÐÉÓÁÌ:

> The reason for this question was nitpicky - ASM is using about 14
> hugepages when it starts up which isn't much. Just kind of annoyed me -
> probably due to lack of sleep lol
>
> Chris
>
> -----Original Message-----
> From: oracle-l-bounce_at_freelists.org [mailto:oracle-l-bounce_at_freelists.org]
> On Behalf Of Christopher.Taylor2_at_parallon.net
> Sent: Friday, May 17, 2013 11:29 AM
> To: oracle-l_at_freelists.org
> Subject: Prevent ASM from using any hugepages
>
> Guys/Gals,
> I'm in the process of configuring hugepages in 10.2.0.4 RAC.
>
> Since ASM starts up first, how I do prevent it from using any of the
> hugepages?
>
> Regards!
>
> Chris Taylor
> Oracle DBA
> Parallon IT&S
>
>
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Received on Fri May 17 2013 - 21:16:55 CEST