[Gllug] Writing my own system call

[Adrian McMenamin]

On Mon, June 20, 2011 4:48 pm, Christian Smith wrote:

>
> I'm curious, though. What are you actually trying to measure? While a
> process
> certainly shows locality within it's virtual address space, the VM
> hardware
> means that locality is not required in physical memory, and physical pages
> are
> too big to have any effect on the caching of data, which will likely
> happen in
> much smaller chunks (on the order of 32-128 bytes?) The biggest effect of
> page level locality is in NUMA systems, where reading pages from a remote
> board can be much slower than a local memory slot.
>
>
You have a point - I'm not sure that looking at the physical addresses
will make much difference/show me anything much, but I thought I'd look
and see if there were any patterns.



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