Date: Tue, 22 Jan 2002 13:04:25 -0800 From: Kent Stewart <kstewart@owt.com> To: Scott Reese <sreese@codysbooks.com> Cc: freebsd-stable@FreeBSD.ORG Subject: Re: make -j4 world Message-ID: <3C4DD3D9.3000206@owt.com> References: <5.1.0.14.0.20020122145124.03cd1380@marble.sentex.ca> <5.1.0.14.0.20020122145124.03cd1380@marble.sentex.ca> <5.1.0.14.0.20020122151930.03d62220@marble.sentex.ca> <3C4DCB91.7080701@owt.com> <3C4DCDE7.C5E77C03@math.missouri.edu> <20020122125645.1a0c9b36.sreese@codysbooks.com>
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Scott Reese wrote: > On Tue, 22 Jan 2002 14:39:03 -0600 > Stephen Montgomery-Smith <stephen@math.missouri.edu> wrote: > > >>On the "Error in make buildworld" thread I said that I had this problem >>on 1 out of 3 machines, so you may not necessarily see this problem. I >>only saw this problem on the fastest machine. >> >> > > I've actually found that on a fast computer (1.6 GHz Pentium IV) using the "-j" > flag tends to slow things down a bit. The standard "make buildworld" ran much > faster and much more smoothly than "make -j4 buildworld." It was the same with > kernel builds. Honestly, with a machine that fast, I don't really see a need > for the "-j" flags anyway. That has also been my experience on most of my single cpu systems. I find the combination of # of controllers and ATA-100 drives makes a difference. I have one XP system setup with a -j4 and the other with -j6. I just finished a buildworld. It required 26:40. I have a make script that I uncomment the line I want it to use. The make script is setup to use no -j to -j12 in steps of 2. The system with -j6 used to be a dual 866 coppermine and I hadn't noticed that it was still -j6. There were two threads of build failures and I am not seeing it the buildworld fail on this end. Kent -- Kent Stewart Richland, WA mailto:kbstew99@hotmail.com http://users.owt.com/kstewart/index.html FreeBSD News http://daily.daemonnews.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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