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From: michaelv@MindBender.HeadCandy.com (Michael L. VanLoon)
Newsgroups: comp.os.386bsd.questions,comp.unix.bsd.freebsd.misc
Subject: Re: Kernel rebuild times (was Re: Suggestion on recompiling kernel)
Date: 17 Mar 1995 04:26:40 GMT
Organization: HeadCandy Associates... Sweets for the lobes.
Lines: 30
Message-ID: <MICHAELV.95Mar16202647@MindBender.HeadCandy.com>
References: <3jm3eb$dkl@news.bu.edu> <MICHAELV.95Mar8223323@MindBender.HeadCandy.com>
	<3jocmf$fja@everest.dtr.com> <3jothe$oja@gate.sinica.edu.tw>
	<3k03dv$ae9@bonnie.tcd-dresden.de>
NNTP-Posting-Host: mindbender.seanet.com
In-reply-to: j@narcisa.sax.de's message of 13 Mar 1995 01:25:35 +0100

In article <3k03dv$ae9@bonnie.tcd-dresden.de> j@narcisa.sax.de (J Wunsch) writes:

   Brian Tao <taob@gate.sinica.edu.tw> wrote:

   >Both machines take about 25 minutes to rebuild their respective kernels
   >for their respective hardware.  One machine is a 486DX2/66 with an ISA
   >bus and an AHA-1542C SCSI controller with a Quantum Lightning 540S.  The
   >other is a 486DX4/100 with a PCI SC-200 controller and Quantum Empire
   >1080S.  The kernel configs are identical except for the SCSI controller
   >and PCI drivers.  Yet both have rebuild times within one or two minutes
   >of the other.  I would have expected the 100-MHz PCI box to be
   >substantially faster.  If it ain't the CPU or the bus or the disk, then
   >what affects compilation time?

   Memory size?  Cache RAM size?

   Our i586/90 takes about ten minutes (or less) to rebuild a FreeBSD
   1.1.5.1 kernel, but it has 64 MB of RAM.

Including "make depend"?  I get a P66 w/32MB to do it in about 18
minutes (including make depend) with NetBSD-1.0.

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  Michael L. VanLoon                                 michaelv@HeadCandy.com
       --<  Free your mind and your machine -- NetBSD free un*x  >--
     NetBSD working ports: 386+PC, Mac, Amiga, HP300, Sun3, Sun4, PC532,
                           DEC pmax (MIPS R2k/3k), DEC/AXP (Alpha)
     NetBSD ports in progress: VAX and others...
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