The information I posted was slightly incorrect, sorry - my machine has 8 cores (and 16 virtual processors) - so you see why choosing concurrency factor of 14 is particularly bad in this setup.

Maurizio

On 14/09/15 12:03, Maurizio Cimadamore wrote:
Hi,
I realized that the concurrency factor inferred by the JDK build might be too high; on a 16 core machine, concurrency is set to 14 - which then leads to absurd load averages (50-ish) when building/running tests. High load when building is not a big issue, but when running test this almost always turns into spurious failures due to timeouts. I know I can override the concurrency factor with --with-jobs - but I was curious as to why the default parameter is set to such aggressive value?

Thanks
Maurizio

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