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Date:      Mon, 29 Jun 2009 00:25:20 +0200 (CEST)
From:      Wojciech Puchar <wojtek@wojtek.tensor.gdynia.pl>
To:        alc@freebsd.org
Cc:        freebsd-hackers@freebsd.org
Subject:   Re: large pages (amd64)
Message-ID:  <alpine.BSF.2.00.0906290024540.37501@wojtek.tensor.gdynia.pl>
In-Reply-To: <ca3526250906281451g4441441bt3718d37dd848590a@mail.gmail.com>
References:  <alpine.BSF.2.00.0906281933580.1809@wojtek.tensor.gdynia.pl> <ca3526250906281451g4441441bt3718d37dd848590a@mail.gmail.com>

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>
>       other question - tried enabling it on my i386 laptop (256 megs ram), always
>       mappings==0, while promitions>demotions>0.
> 
> 
> The default starting address for executables on i386 is not aligned to a 2/4MB page boundary. 
> Hence, "mappings" are much less likely to occur.
> 
>
>       certainly there are apps that could be put on big pages, gimp editing 40MB bitmap for
>       example
> 
> 
> Regards,
> Alan
> 
> 
> 
how can i check how much (or maybe - what processes) 2MB pages are 
actually allocated?



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