Re: [NUMA] /proc/<pid>/numa_maps to show on which nodes pages reside

From: Christoph Lameter <clameter_at_engr.sgi.com>
Date: 2005-07-12 04:02:26
On Mon, 11 Jul 2005, Dave Hansen wrote:

> So, if something like numa_maps existed, but pointed to the memory
> object instead of the NUMA node directly, you could still easily derive
> the NUMA node.  But, you'd also get information about which particular
> bits of memory are being used.  That might be useful for a user that's
> getting desperate to remove some memory and wants to kill some processes
> that might be less than willing to release that memory.

We really need both I guess. If you dealing with a batch scheduler that
wants to move memory around between nodes in order to optimize programs 
then you nedd to have numa_maps. Maybe we need to have two: numa_maps 
and memory_maps?

> The downside is that we'll have to get that sysfs stuff working for !
> SPARSEMEM configurations.  

If we have two maps then we can avoid that.
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Received on Mon Jul 11 14:07:01 2005

This archive was generated by hypermail 2.1.8 : 2005-08-02 09:20:40 EST