Return to BSD News archive
Xref: sserve comp.os.386bsd.questions:17060 comp.unix.bsd.freebsd.misc:93 Newsgroups: comp.os.386bsd.questions,comp.unix.bsd.freebsd.misc Path: sserve!newshost.anu.edu.au!harbinger.cc.monash.edu.au!msunews!agate!howland.reston.ans.net!ix.netcom.com!netcom.com!hasty From: hasty@netcom.com (Amancio Hasty Jr) Subject: Re: Kernel rebuild times (was Re: Suggestion on recompiling kernel) Message-ID: <hastyD5pyuG.5G5@netcom.com> Organization: Netcom Online Communications Services (408-241-9760 login: guest) References: <3keq9c$oht@gate.sinica.edu.tw> <3kffb3$am1@park.uvsc.edu> <3kg5lu$1ev@news.cloud9.net> Date: Mon, 20 Mar 1995 03:25:27 GMT Lines: 41 Sender: hasty@netcom14.netcom.com In article <3kg5lu$1ev@news.cloud9.net> cs@cloud9.net (Carl S. Shapiro) writes: >Terry Lambert (terry@cs.weber.edu) wrote: >: taob@gate.sinica.edu.tw (Brian Tao) wrote: >: ] Both machines have 16 megs real and 256K cache. The 486/66 has 32 >: ] megs swap and the 486/100 has 64 megs swap (not that the amount of >: ] swap should make any difference). So, again, why would one machine >: ] with a slower CPU and slower bus compile the kernel just as quickly as >: ] the faster machine? This isn't life-and-death or anything, but I'm >: ] terribly curious. :) > >: Because you fell for marketing hype and it's not a faster machine. > > Dam! It took me... say... 2.5 hours to build FreeBSD 2.0 on >my 486 DX2/66 with 20 megs ram, 32 megs swap, and 256k cache. I Break the problem down and determine what is the bottle neck. Ideally, there should be a set of programs to check the cpu , memory, cache speed, etc.. I don't have a set right out of the top my head. Start with a freshly booted system and with no X running. I would run "iozone auto" just to make sure that your disk sub-system is at least performing. run top make sure that you don't have something running on the background chewing up the cpu time. Next I would time the compilation of a few kernel modules and post the results. (pick a whole sub-system like NFS). Amancio -- FREE unix, gcc, tcp/ip, X, open-look, netaudio, tcl/tk, MIME, midi,sound at freebsd.cdrom.com:/pub/FreeBSD Amancio Hasty, Consultant Home: (415) 495-3046 e-mail hasty@netcom.com