Date: Mon, 25 Nov 2013 14:34:18 -0500 From: William Bulley <web@umich.edu> To: FreeBSD Mailing List <freebsd-questions@freebsd.org> Subject: using make(1) with "-j" option Message-ID: <20131125193418.GS15424@itcom245.staff.itd.umich.edu>
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In the modern era with multiple CPUs the norm, I was interested in finding a way to speed up compiles from source (of the kernel and the various ports I use). According to the man page "make(1)" the "-j max_jobs" option: Specify the maximum number of jobs that make may have running at any one time. Turns compatibility mode off, unless the -B flag is also specified. While building the kernel today, I was successful using "make -j 4" on a four CPU system. Later on, on the same system, I was unable to build any ports from source using either "# make -j 4 install" or "# make -j 2 install" commands. What am I missing here? Regards, web... -- William Bulley Email: web@umich.edu 72 characters width template ----------------------------------------->|
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