ttyp0:root@harry 8:32:59/030516(...macppc/dev)# grep battery ../conf/majors.macppc
device-major battery char 29 battery

ls -lag /dev/battery
crw-r--r-- 1 root wheel 29, 0 May 16 08:27 /dev/battery

(benchmark 1000
(format-time-string "\
%a%A%b%B%c%C%d%D%e%h%H%I%j%k%l%m%M%n%p%r%R%s%S%t%T%U%w%W%x%X%y%Y%Z"))

0.27202606201171875

echo power1 > /dev/battery
0.25034594535827637
0.25053393840789795
0.25037896633148193

echo power0 > /dev/battery
0.21664094924926758
0.216575026512146
0.21674096584320068
0.21651005744934082

多分 667MHz と 800MHz
echo suspend > /dev/battery
すると止ってしまう。どうやって起きるのか ?

ttyp0:root@harry 8:31:42/030516(...macppc/dev)# cat /dev/battery0 1 96 0

inode UFS(128) UFS2(256) ?

time make
...
4023468 74184   238368  4336020 422994  netbsd
393.069u 53.654s 7:25.76 100.2% 0+0k 10+2801io 39pf+0w
ttyp4:makoto@harry  10:12:51/030516(...compile/INSECURE_ZS_ABORT)> 

make clean && make depend && time make
...
4023468 74184   238368  4336020 422994  netbsd
460.482u 59.373s 8:24.21 103.1% 0+0k 0+2892io 0pf+0w
ttyp4:makoto@harry  10:25:15/030516(...compile/INSECURE_ZS_ABORT)> 

2120.849u 360.393s 41:58.59 98.5%       0+0k 32+7157io 309pf+4w
ttyp0:makoto@fml  20:12:34/030516(...compile/INSECURE)>