Evan Dower evantd at
Tue Aug 3 09:31:58 PDT 2004

% uptime
9:23AM  up 1 day, 15:42, 6 users, load averages: 0,98 1,19 1,25

With a recent cvsup (and all the rebuilding and installing involved) I have 
noticed what seems to be an improvement in stability. I must have missed any 
postings about it. Any, recent cvsup means about an hour before this:

% uname -a
FreeBSD 5.2-CURRENT FreeBSD 5.2-CURRENT #0: Sun Aug  1 
16:06:05 PDT 2004     root at  

I noticed that my kernel has now started saying (in the dmesg):
WARNING: Kernel preemption is disabled, expect reduced performance.

Of course, I have WITNESS turned on in my debug kernel so I already expect 
reduced performance. Is this message suggesting that I put FULL_PREEMPTION 
in my kernel? I was under the impression that it was only useful for seeing 
where stuff broke. Is stuff so good now that it will improve performance 
without significant effect on stability? Or perhaps it is indicating that 
PREEMPTION is #undef'd? I didn't #undef it so if this is the case it must 
have been changed upstream.

In any case, I am very glad to have a more stable system again. Thanks very 
much to all who contributed. I'm just curious as to what it was the fixed 
the instability issues we had been having.

Thanks again,
Evan Dower
Undergraduate, Computer Science
University of Washington
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