David S. Miller a écrit :
From: Eric Dumazet <[email protected]>
Date: Mon, 30 Jan 2006 10:03:40 +0100
What would be the needed changes in the code to get both :
- Allocate ram equally from all the nodes of the machine
- Use large pages (2MB) to lower TLB stress
These two desires are mutually exclusive, I think.
If you want an 8MB hash table, for example, with 2MB mappings
you could use memory from a maximum of 4 nodes since the
2MB chunks have to be physically 2MB aligned and 2MB contiguous.
Yes of course, but as those hash tables are very big (their size is bigger
than 2MB * number_of_nodes if you have at least 4GB per node), this could be
done ?
Eric
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