Date: Wed, 18 Mar 1998 09:12:42 -0800 (PST) From: Hugh LaMaster <lamaster@george.arc.nasa.gov> To: current@FreeBSD.ORG Cc: lamaster@george.arc.nasa.gov Subject: Re: Worldstone Continued... Message-ID: <199803181712.JAA05027@george.arc.nasa.gov> In-Reply-To: <Pine.NEB.3.96.980318091721.2441A-100000@shadow.worldbank.org> from "Alok K. Dhir" at Mar 18, 98 09:29:52 am
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Alok K. Dhir (adhir@worldbank.org) wrote: > On Tue, 17 Mar 1998 ortmann@sparc.isl.net wrote: > > > > OK - I got a lot out of our last discussion, and now my -current > > > world builds in 1:23 (!!). This is WITHOUT softupdates, but using > > > async mounts... > > > > Were you the gentleman who posted about compiling in 6+/4+ hours? : > > What were the main tricks to speeding your system up? > > 1. I seperated /usr/src and /usr/obj onto two seperate physical disks. I just wanted to note that while everyone getting ~1:20 has done this, the 6/4 hours for NOT doing it makes me think that the disks used must be have unusually slow seeks (for today) or something, because, I get < 3 hrs on a single disk, single filesystem, for all of /usr, with with everything sync (or not async, however you want to say it). I do have -O -pipe as below: > 2. I uncommented the "CFLAGS= -O -pipe" line in /etc/make.conf (which > really ought to be the default). > 3. I mounted both disks async (I thought some crashes/hangs I was having > may have been related to softupdates). > > (I have been less impressed than I could have been using async,noatime.) > > For speeding up writes, there's nothing like softupdates (if you're brave, > and the system is not for production use that is...). I don't think any of this is disputed, but, if the very long timings from before are correct, I would like to suggest that you get some faster-seeking disks for your system- e.g. people posting higher numbers often use disks with fast seeks such as Quantum Atlas series, Seagate Barracuda or Cheetah, IBM Ultrastar 2ES or 2XP, ... Then, you might see that number drop even further. The goal, in my mind, is do to a complete buildworld and installworld in less than an hour. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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