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List:       freebsd-hackers
Subject:    Re: heap limits: mmap(2) vs. break(2) on i386
From:       Ulrich =?utf-8?B?U3DDtnJsZWlu?= <uqs () spoerlein ! net>
Date:       2009-11-29 17:06:08
Message-ID: 20091129170608.GN3406 () acme ! spoerlein ! net
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On Fri, 27.11.2009 at 18:22:38 -0800, Maxim Sobolev wrote:
> Crazy idea, perhaps, but has anyone considered wrapping up sbrk(2) into 
> mmap(2), so that there is only one memory pool to draw from? Switch to 
> 64-bit certainly helps, however there are lot of 32-bit machines hanging 
> around and we will see them for a while in the embedded space. Certainly 
> current situation with two separate sources of heap memory is not normal.

Alternative and very low tech test:

- Remove sbrk() from libc and /usr/include
- Run port test build
- ???
- PROFIT!

It shall be interesting to see which ports blow up thanks to sbrk()
missing.

Regards,
Uli
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