Re: Address space limits in IA32 linux

Rik van Riel (riel@conectiva.com.br)
Wed, 15 May 2002 09:43:27 -0300 (BRT)


On Tue, 14 May 2002, Ashok Raj wrote:

> what is the maximum addressible virtual address in a IA32 Linux system (4G?)

3 GB.

> typically since Database requires a larger address space, does linux
> kernel has any config to limit this space for kernel, so that the user
> process has more address to play with?

The kernel cannot transparently work around the limitations of the
hardware, but the database itself can create shared memory segments
which it maps and unmaps as needed.

Rik

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