Date: Wed, 09 May 2001 11:29:36 -0600 From: Warner Losh <imp@harmony.village.org> To: Bruce Evans <bde@zeta.org.au> Cc: Mikhail Teterin <mi@misha.privatelabs.com>, eric@FreeBSD.org, mi@aldan.algebra.com, knu@iDaemons.org, will@physics.purdue.edu, sobomax@FreeBSD.org, kris@obsecurity.org, kris@FreeBSD.org, cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: port policies Message-ID: <200105091729.f49HTab38677@harmony.village.org> In-Reply-To: Your message of "Wed, 09 May 2001 19:32:12 %2B1000." <Pine.BSF.4.21.0105091924090.17145-100000@besplex.bde.org> References: <Pine.BSF.4.21.0105091924090.17145-100000@besplex.bde.org>
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In message <Pine.BSF.4.21.0105091924090.17145-100000@besplex.bde.org> Bruce Evans writes: : -j2 on a single-CPU machine with 2 disks (src on one, obj and root on the : other) was a little slower and consumed more resources for makeworld : the last time I checked. It might be faster because the disk(s) are too : slow relative to the CPU and/or the VMIO cache is too small. It's hard : to see how it could consume less resources. I think that people are getting confused because for a kernel build -j 2 or -j 3 can be up to 10-15% faster than no -j flags at all. They figure this translates well to the rest of the system. We have a 4CPU system here that we made faster on buildworld by removing one of its CPUs... Warner To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe cvs-all" in the body of the message
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