Re: Odd swapping issue

From: Dan Noé
Date: Wed Jul 23 2008 - 22:31:41 EST

David Newall wrote:
> Peter Zijlstra wrote:
>> 16g ram on a 32bit kernel is stretching it... may I suggest running a
>> 64bit kernel?
> Is it? Do we expect that behaviour with so much RAM?

The memory must be mapped into the 4GB (32-bit) virtual address space to
be used. Having this much memory on a system with 32 bit pointers leads
to a lot of VM overhead and strange behavior.


/--------------- - - - - - -
| Dan Noé
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