Large Page allocation strategy only for 2003?
Jon Masamitsu
jon.masamitsu at oracle.com
Tue Oct 2 06:10:38 UTC 2012
On 10/1/2012 5:03 PM, Bernd Eckenfels wrote:
> Hello,
>
> While investigating the risks of using/recommending large pages I
> noticed that there are two different allocations strategies. One
> requests the whole area (I guess thats part of the heap in NUMA?) with
> a single malloc or with multiple (+UseLargePagesIndividualAllocation).
> The option for this defaults to single on all platforms but Windows 2003.
>
> I wonder if this is really a 2003 thing only. or if the code should be
> updated to default to on on Win7,8,2008 and 2008R2 as well.
I believe that it was a workaround for a problem on windows 2003.
I don't recall anymore details.
Jon
>
> I asume, that not the whole heap will be allocated in case of NUMA,
> right? Because otherwise I could see use for the IndividulaAllocations
> in that case as well, otherwise a single locality might get exhausted?
>
> Greetings
> Bernd
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