Date: Sat, 28 Feb 2004 18:32:07 -1000 (HST) From: Vincent Poy <vince@oahu.WURLDLINK.NET> To: Andre Guibert de Bruet <andy@siliconlandmark.com> Cc: current@freebsd.org Subject: Re: buildworld times Message-ID: <20040228183123.Q8264-100000@oahu.WURLDLINK.NET> In-Reply-To: <20040228231904.B3751@alpha.siliconlandmark.com>
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On Sat, 28 Feb 2004, Andre Guibert de Bruet wrote: > On Sat, 28 Feb 2004, Vincent Poy wrote: > > > On Sat, 28 Feb 2004, Robert Watson wrote: > > > As you point out, debugging problems is a lot easier if you run with > > > INVARIANTS+WITNESS. However, you may well see build times halve or more > > > by running without WITNESS. > > > > I always thought INVARIANTS caused slow performance as well. > > Ofcourse, it does seem all the stuff mentioned above is disabled in a > > -RELEASE GENERIC kernel so that may be it as well. > > GENERIC's got enough stuff in it that you will notice a good difference in > the disk footprint of the image as well as the memory image of the kernel > when run. I tend to take GENERIC, strip out all of the statically compiled > drivers that I don't need and add whatever options I need on the machine. > From my own tests, something as simple as "options ADAPTIVE_MUTEXES" can > yield upwards of 5% compile time reduction. This number is even higher on > multi-CPU machines. That's what I usually do is disable the stuff I don't need but with -current, it seems like you need the debugging for kernel panics as a necessary precaution. Cheers, Vince - vince@WURLDLINK.NET - Vice President ________ __ ____ Unix Networking Operations - FreeBSD-Real Unix for Free / / / / | / |[__ ] WurldLink Corporation / / / / | / | __] ] San Francisco - Honolulu - Hong Kong / / / / / |/ / | __] ] HongKong Stars/Gravis UltraSound Mailing Lists Admin /_/_/_/_/|___/|_|[____] Almighty1@IRC - oahu.DAL.NET Hawaii's DALnet IRC Network Server Admin
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