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-t 32

Use a maximum of the number of physical cores and then scale down.



Thanks, -t 32 (instead of -t 13 which is what comes as default) makes a big difference in CPU usage across all cores. Not quite 100% but all cores are above 50% with many at 100%. It speeds up just a tiny bit the eval t/s to 3.3 (from 2.9).




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