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From: Hiroharu Tamaru <tamaru@myn.rcast.u-tokyo.ac.jp>
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Date: Mon, 12 Sep 2005 19:15:03 +0900
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Subject: [FreeBSD-users-jp 86962] Re: CPU time distribution rate difference between 4R and 5R
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At Sat, 10 Sep 2005 22:32:56 +0900, Kazumaro Aoki wrote:

> 1 CPU$B$G!"(Bnice 0$B$H(Bnice +20$B$N(Brunning process$B$,(B1$B$D$:$D$"$k>l9g!"<B:]$N7W(B
> $B;;;~4V$r8+$F$$$k$H(BFreeBSD4R$B$G$O!"$[$\(B10:0$B$G!"(Bnice 0$B$NJ}$K(BCPU$B;q8;$,3d$j(B
> $BEv$F$i$l!"(BFreeBSD5R$B$G$O!"(B7:3$B$G3d$jEv$F$i$l$F$$$k$h$&$K;W$($^$9!#(B
> 
> FreeBSD4R$B$N3d$jEv$FJ}?K$NJ}$,;d$O9%$-$J$N$G!"(BFreeBSD5R$B$G$b$=$N$h$&$J5s(B
> $BF0$K$J$k$h$&$K$7$?$$$N$G$9$,!"$I$&$7$?$i$h$$$N$G$7$g$&$+!)(B

$B2?$b(Btest$B$;$:$K=q$-$^$9$,!"(B
rtprio / idprio $B$r;H$C$?>l9g$O$I$&$J$j$^$9$+!)(B

$B$"$H$O!"(Bnice/rtprio/idprio $B$=$l$>$l$N>l9g$N!"(B
CPU $B;HMQHfN($@$1$G$O$J$/$F!"3F(B process $B$NAm(B CPU $B;~4V$H$+!"(B
wall clock $B<B9T;~4V$H$+$O(B?

$B$A$J$_$K!"(Bidle 0% $B$G$NOC$G$9$h$M(B? I/O $B$O%"%j$G$9$+(B?
I/O$BM-$j$@$H!"(B4.x $B$H(B 5.x $B$[$IFbIt9=B$$,0c$&$H!"(BCPU$B@jM-HfN($O(B
$BB?$/$N;v>p$N7k2L$G$7$+$J$$$H;W$&$N$G!"2r<a$,Fq$7$$$H;W$$$^$9!#(B
# CPU / disk $B$J$I$N(B hardware $B$,0c$C$?>l9g$O$J$*$5$i!#(B

# nice 0 $B$N(B process $B$N<B<B9T;~4V$,(B nice +20 $B$N(B process $B$N$"$k(B
# $BL5$7$N1F6A$r$[$H$s$I<u$1$F$$$J$1$l$P!"(BCPU $BHfN($,2<$,$C$F$$(B
# $B$?$H$7$F$b!"$=$l$O$A$g$C$H$A$,$&LdBj$G$9$h$M!#(B

I/O$BL5$7$GA4$F$N(B process $B$,40A4$K(B CPU bound $B$J>l9g$G$b!"(Bnice 
$B$O$$$/$iCM$r9b$/$7$b@jM-N((B 0 $B$K$O$J$i$J$$$N$,!"$=$b$=$b$N@_(B
$B7W>e$NM}A[$@$C$?$H;W$$$^$9(B($BBg@N$O0c$C$?$O$:$G$9$,!D(B)$B!#(B

$B$3$N>l9g!"(Bidprio $B$G2<$2$l$P!"(B0 $B$K$J$C$F$/$l$k$s$@$H;W$$$^$9!#(B

$B7k2L$,=P$?$i$<$R$*$7$($F$/$@$5$$!#(B

-- 
Hiroharu Tamaru
