Not to beat a dead horse, but ...

[Edward Tomasz Napierała]

On 0608T1415, George Mitchell wrote:
> When I run this command on 10-STABLE on a uniprocessor system while
> running the misc/dnetc port:
> 
> cd /usr/src
> time make buildworld && time make buildkernel && time make installkernel
> 
> On revision 266422 with SCHED_ULE, I get (showing the time lines only):
> 
> 7045.988u 897.681s 4:00:33.89 55.0%     29430+492k 27927+17003io 
> 30943pf+519w
> 1155.683u 149.422s 52:49.60 41.1%       25418+410k 7452+20843io 12166pf+248w
> 7.101u 4.838s 8:03.57 2.4%      5905+221k 1179+9461io 1345pf+67w
> 
> On revision 267211 with SCHED_4BSD:
> 
> 6950.087u 665.074s 2:40:36.19 79.0%     29929+502k 33651+17368io 
> 31151pf+151w
> 1148.066u 134.312s 26:40.95 80.1%       26234+426k 9681+24613io 11917pf+106w
> 6.774u 4.369s 0:33.90 32.8%     3110+320k 1388+10979io 1514pf+3w
> 
> Since the majority of my systems are uniprocessors and I like to
> run dnetc, SCHED_ULE has been a dealbreaker for me since day one.
> Consequently I can't use freebsd_update.

Are the results above from kernel built with "options SMP"?  If so,
could you try without it?  Otherwise, can you try with that option?