[Gllug] Writing my own system call

[John Hearns]

On 17 June 2011 17:22, Adrian McMenamin <adrian at mcmen.demon.co.uk> wrote:
>> He also said "I am researching/confirming phases of memory locality in
>> the kernel."
>
> It is an MSc project.
>
> By hacking stuff in user space I can see where the virtual (user space)
> memory is coming from, but I want to examine what is going on with
> physical addresses too.
>
> Essentially operating system/VMM theory is based on the idea that in a
> given (short) time delta allocations will show locality. But at a bigger
> range of time that locality may move - perhaps gradually, though more
> likely (at least this is the theory/past experimental conclusion) in
> rather clearer phases.


Adrian, thankyou for the reply. That's very interesting.

In response to the person who got out of bed on the wrong side this morning,
I happen to work in high performance computing. Arranging processes to
run on particular CPUs
and locality of memory to the job is important.
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