Re: Large pages

From: Jonathan Lewis <>
Date: Wed, 14 Nov 2012 09:07:33 -0000
Message-ID: <>

"Noons" <> wrote in message On Nov 13, 9:53 pm, "Jonathan Lewis" <> wrote:

|You said:
|>In Unix (unless you use intimate shared memory) you get one map per
|>process - so an Oracle system with 1,000 processes would end up using
|>much memory for maps of the SGA as it would on the SGA itself if it
|>using standard pages.
|That is incorrect, In Unix there is no such thing as a memory map per
|The largepages feature has nothing to do with the memory of each
|Memory map is an incorrect term to describe virtual memory translation
to physical addresses in the context of a process or group of


Thanks for that (mostly cut) - I'm going to have to read through that lot very carefully



Jonathan Lewis

Author: Oracle Core (Apress 2011)
Received on Wed Nov 14 2012 - 10:07:33 CET

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