Re: [Boost-users] [Interprocess] Minimum allocation size for managed_shared_memorty

Subject: Re: [Boost-users] [Interprocess] Minimum allocation size for managed_shared_memorty
From: Ion Gaztañaga (igaztanaga_at_[hidden])
Date: 2010-11-29 14:03:59

On 29/11/2010 17:08, Aditya Gadre wrote:
> On my machine, the page size is 4096 bytes. In general, is it advisable
> to allocate memory in multiples of the page size?
> Thanks,

We'll, if you need fixed allocation it does not matter. If you are going 
to use dynamic allocation functions, if you don't allocate in multiples 
of the page-size, you are going to waste memory, since no one can use 
the the portions of the pagesize you don't fully map.

See:

http://www.boost.org/doc/libs/1_45_0/doc/html/interprocess/sharedmemorybetweenprocesses.html#interprocess.sharedmemorybetweenprocesses.mapped_region.mapped_region_mapping_problems

Best,

Ion