Date: Mon, 3 Jun 2002 21:27:38 -0700 (PDT) From: Mark Smith <msmith@beta.tricity.wsu.edu> To: pepper@reppep.com (Chris Pepper) Cc: freebsd-questions@FreeBSD.ORG Subject: Re: make -j4 becoming default? Message-ID: <200206040427.VAA18855@beta.tricity.wsu.edu> In-Reply-To: <p05111a16b9218b533fc1@[129.85.219.160]> from "Chris Pepper" at Jun 03, 2002 05:42:46 PM
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> Obviously, I'd like to use -j4 wherever possible, and it's > suboptimal to try everything multi-threaded, then sometimes fail and > manually fall back to single-threaded. Even worse, I usually forget > -j4 for thread-safe builds, so I waste time unnecessarily. Why? I've tried make buildworld with different -j options and, on a single processor computer, they're slower than not using -jn at all. In this case, the handbook may be wrong. If you have the time, try "time make buildworld" and "time make -j4 buildworld" in both single and multiuser mode and look at the "real" time for all 4. In my experience on my box, "make buildworld" under multiuser mode is the fastest. Mark -- ========================================================================= UNIX IS user friendly, it's just very choosy about who it calls a friend! ========================================================================= To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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