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Date:      Thu, 2 Dec 1999 15:12:45 -0600
From:      "Matthew D. Fuller" <fullermd@futuresouth.com>
To:        Alfred Perlstein <bright@wintelcom.net>
Cc:        Doug Barton <Doug@gorean.org>, chat@FreeBSD.ORG
Subject:   Re: dual 400 -> dual 600 worth it?
Message-ID:  <19991202151244.Y22444@futuresouth.com>
In-Reply-To: <Pine.BSF.4.21.9912012327170.4557-100000@fw.wintelcom.net>
References:  <Pine.BSF.4.21.9912011334320.52717-100000@24-25-220-29.san.rr.com> <Pine.BSF.4.21.9912012327170.4557-100000@fw.wintelcom.net>

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On Wed, Dec 01, 1999 at 11:29:41PM -0800, a little birdie told me
that Alfred Perlstein remarked
> On Wed, 1 Dec 1999, Doug Barton wrote:
> > 
> > Other than that I just do a straight 'make -j4 -DNOCLEAN world'. That's
> > with both directories new and clean. If I'm doing a second make world I
> > can get it done in just under 42 minutes. *grin*
> 
> How are your filesystems mounted/what kind of disks?
> 
> Personally I've found that a higher -j can work even better, something
> like 8 or even 12 works pretty good.  (depends if I want to play mp3s
> while building or not :) )

As a data point, I just started a buildworld when I left work last night.
This is a dual PPro 200/512k, 256 meg RAM, /usr/src and /usr/obj on
seperate 7200 RPM UW SCSI drives on an aic7880 controller.
After the build:
/dev/da3s1e on /usr/obj (ufs, asynchronous, NFS exported, local, noatime,
nosuid, writes: sync 82 async 44465)
/dev/da4s1e on /usr/src (ufs, asynchronous, NFS exported, local, noatime,
nosuid, writes: sync 6 async 44600)

mortis:/usr/src
root% time nice +20 make -j6 buildworld
....
7111.969u 2208.024s 1:38:44.38 157.3%   1386+1422k 32924+4824io 5880pf+0w

Could probably push it a bit faster with a higher -j (8 or 10), but I
didn't.  X was running at the time, along with Netscape, ~30 xterms, and
a few other sundry thingymabobs.



-- 
Matthew Fuller     (MF4839)     |    fullermd@over-yonder.net
Unix Systems Administrator      |    fullermd@futuresouth.com
Specializing in FreeBSD         |    http://www.over-yonder.net/
FutureSouth Communications      |    ISPHelp ISP Consulting

"The only reason I'm burning my candle at both ends, is because I
      haven't figured out how to light the middle yet"


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