Optimal value for make -j

Asked Jun 12 '17 at 00:39

Active Jun 12 '17 at 01:46

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What is the optimal value of the -j flag for make ? I know that all my source is free of errors.

Is it the number of cores? Or the number of logical processors?

asked Jun 12 '17 at 00:39

user31264

IIRC make will use whatever is available without using the -j option. I've always used it to limit the resources being used so that my machine is still usable for other tasks while something big builds. – ivanivan Jun 12 '17 at 04:58
1

@ivanivan it won’t build in parallel by default, you need to use -j if you want parallel builds. – Stephen Kitt Jun 12 '17 at 05:38

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