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To: Eivind Eklund <perhaps@yes.no>
cc: shimon@simon-shapiro.org, toor@dyson.iquest.net, sprice@hiwaay.net,
        smp@csn.net, current@FreeBSD.ORG, Shimon@i-connect.net
Subject: Re: make world time???/ 
In-reply-to: Your message of "Tue, 18 Nov 1997 14:48:15 +0100."
             <199711181348.OAA10979@bitbox.follo.net> 
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Date: Wed, 19 Nov 1997 10:40:38 -0800
From: Amancio Hasty <hasty@rah.star-gate.com>
Sender: owner-freebsd-current@FreeBSD.ORG
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Hi,

I wish we could do sub-minute compiles 8)
make world started on Tue Nov 18 22:31:50 PST 1997
make world completed on Tue Nov 18 23:44:02 PST 1997

So it takes about 75 minutes to do a make world over here and
again 8)

I have a Pentium Pro 200Mhz , 48MB , 4.3 Seagate Cheetah (10000 rpms).

mount -u -o async,noatime /usr 
cd /usr/src
make clean  #if you already have a clean obj or no /usr/obj populated 
            #there is no need to do this step.
make world >build.log

/etc/make.conf modified flags:
NOCLEAN=true
CFLAGS= -O  -pipe

kernel config file special flags :
options AHC_TAGENABLE
options AHC_SCBPAGING_ENABLE
options AHC_ALLOW_MEMIO

Without the above your world build time will probably be double if
you are doing your system build on your scsi disk drives.

I suspect that mounting a /usr/obj on a fast scsi or IDE drive is 
not going to lower my performance figures. We need to experiment
to find out whats going on fast system builds.


	Cheers,
	Amancio


> > 
> > 
> > On 17-Nov-97 Eivind Eklund wrote:
> > >> 
> > >> 
> > >> Hi Amancio Hasty;  On 17-Nov-97 you wrote: 
> > >> >  Hmm...
> > >> >  
> > >> >  I do a make world in about 75 minutes -- I just didn't do
> > >> >  profiled
> > >> >  libraries.
> > >> 
> > >> Correct me if I am wrong, but the pupose here is not to finish make
> > >> world
> > >> in short time.  I have seen sub-minute before :-)
> > > 
> > > A 'make world' including what?
> > 
> > Everything, but you start with empty /usr/obj.
> 
> What kind of hardware are you running this at?  What setup WRT async,
> noatime, MFS, etc?  We want details! *grin*
> 
> I just find sub-minute compiles of >100MB of source quite
> astonishing.
> 
> Eivind.