Date: Mon, 24 Nov 1997 21:13:35 -0800 (PST) From: Simon Shapiro <shimon@simon-shapiro.org> To: Amancio Hasty <hasty@rah.star-gate.com> Cc: Shimon@i-connect.net, current@FreeBSD.ORG, smp@csn.net, sprice@hiwaay.net, toor@dyson.iquest.net, Eivind Eklund <perhaps@yes.no> Subject: Re: make world time???/ Message-ID: <XFMail.971124211335.shimon@Simon-Shapiro.ORG> In-Reply-To: <199711191840.KAA01635@rah.star-gate.com>
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On 19-Nov-97 Amancio Hasty wrote: > 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. Yup. Look elsewhere from the disk I/O. It is NOT being stressed. If Microsoft Built Cars: There would be an "Engine Pro" with bigger turbos, but it would be slower on most existing roads. Sincerely Yours, Simon Shapiro Shimon@Simon-Shapiro.ORG Voice: 503.799.2313
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