Impressive CPU usage

[George Rosamond]

Andreas Tobler:
> On 12.07.14 21:27, Tim Kientzle wrote:
>> While building the git port on my BeagleBone Black:
>>
>>
>> last pid: 87645;  load averages:  1.05,  0.93,  0.72    up 0+13:15:47
>> 19:24:42 19 processes:  2 running, 17 sleeping CPU: 68.4% user,  0.0%
>> nice, 28.5% system,  3.0% interrupt,  0.0% idle Mem: 57M Active, 352M
>> Inact, 77M Wired, 1804K Cache, 67M Buf, 4280K Free Swap:
>>
>> PID USERNAME    THR PRI NICE   SIZE    RES STATE    TIME    WCPU
>> COMMAND 87645 root          1  69    0 44792K 33288K RUN      0:02
>> 1777.13% cc 87644 root          1   8    0 35336K 22832K wait
>> 0:00 107.14% cc 87633 root          1  40    0 11568K  3056K RUN
>> 0:00   0.84% top 87564 root          1   8    0 10304K  1932K wait
>> 0:01   0.53% gmake 677 root          1  40    0 18880K  5136K select
>> 0:16   0.04% sshd
>>
>>
>> For the record:
>>
>> root at beaglebone:~ # uname -a FreeBSD beaglebone 11.0-CURRENT FreeBSD
>> 11.0-CURRENT #0 r266929: Sun Jun  1 00:29:41 PDT 2014
>> root at thinkpad:/usr/home/tim/crochet-freebsd/work/obj/arm.armv6/usr/src/sys/BEAGLEBONE
>>
>> arm
> 
> 
> +1:
> 
> andreast at wandquad:~ % uname -ra
> FreeBSD wandquad 11.0-CURRENT FreeBSD 11.0-CURRENT #12 r268501M: Thu Jul
> 10 21:02:32 CEST 2014
> andreast at tcx58.andreas.nets:/usr/obj/arm.armv6/export/devel/fbsd/src/sys/WANDQUAD
>  arm
> 
> last pid: 30275;  load averages:  8.51,  7.73,  5.25    up 2+00:19:10
> 21:32:22
> 50 processes:  9 running, 41 sleeping
> CPU: 71.2% user,  0.0% nice, 18.8% system,  9.9% interrupt,  0.2% idle
> Mem: 233M Active, 260M Inact, 159M Wired, 244K Cache, 114M Buf, 1349M Free

Great stuff.  This could allow me to start up that selection of ARMv6
pkgs I had on mirrors.nycbug.org, since I was doing native,
sans-poudriere builds.

What exactly is enabling this performance increase?  Has/can it be MFC'd
to 10.x?

g