Re: Linux: more cores = less concurrency.

* Jesper Krogh:

> If you have a 1 socket system, all of your data can be fetched from
> "local" ram seen from you cpu, on a 2 socket, 50% of your accesses
> will be "way slower", 4 socket even worse.

There are non-NUMA multi-socket systems, so this doesn't apply in all
cases.  (The E5320-based system is likely non-NUMA.)

Speaking about NUMA, do you know if there are some non-invasive tools
which can be used to monitor page migration and off-node memory
accesses?

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Florian Weimer                <fweimer@bfk.de>
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