Performance of 4.x vs 5.x (Re: Lifetime of FreeBSD branches)

Scott Robbins scottro at
Tue May 24 13:37:29 PDT 2005

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On Tue, May 24, 2005 at 12:27:21PM -0700, Freddie Cash wrote:
> On May 24, 2005 12:14 pm, Scott Robbins wrote:
> > > The other is for items that apply to all CPU architectures, and is
> > > located at /usr/src/sys/conf/NOTES.
> > > You have to read both.  The PREEMPTION option is in the second file
> > > above.
> > Judging from the forums and various other things, it seems that a lot of
> > people aren't aware of the second NOTES file.  (Of course, you can do
> > make LINT while in <arch>/conf, which I blush to admit, is what I did
> > before I realized the existance of the second NOTES file.  :)
> From the top of /usr/src/sys/i386/conf/NOTES:
> # NOTES -- Lines that can be cut/pasted into kernel and hints configs.
> #
> # This file contains machine dependent kernel configuration notes.  For
> # machine independent notes, look in /sys/conf/NOTES.

> Like they say, doesn't matter how good the documentation is if nobody reads 
> it fully.  :)

True, but in general, having gotten used to LINT, usually, I would just
check notes for syntax--for instance, I might see something about
PREEMPTION and just do (while in i386/conf) grep PREEMPT NOTES.  

What's the old Calvin and Hobbes line? "Have you looked at the manual?"
"WHAT?  Do I look like a sissy?"  

You're right of course, Fred, but in honesty, it's been awhile since I
read NOTES (or LINT in the old days) top to bottom.  Heh, I was more
careful when I was a complete novice--err, not that I'm any sort of
expert now.   :)

- -- 

Scott Robbins

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