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References: <199810221239.VAA15338@gaye.slab.tnr.sharp.co.jp> <199810220218.LAA12807@gaye.slab.tnr.sharp.co.jp>
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From: =?ISO-2022-JP?B?GyRCNmJFRDlAO0obKEI=?= <vanitas@ma3.seikyou.ne.jp>
To: man-jp-reviewer@jp.freebsd.org
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Subject: [man-jp-reviewer 627] Re: (check) clocks.7
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$B6b$sED$G$9!#(B

[man-jp-reviewer 613]: $B6b$sED(B
> > $B<B$O!"K\2H$N(B mailing-list $B8!:w$G%"%I%l%9$,=P$F$-$?$N$G!"(B
> > $B<h$j4:$($:<ALd$rEj$2$F$_$^$7$?!#(B
> 
> $B$"$j$,$H$&$4$6$$$^$9!"(BWunsch $B$5$s$+$i$*JV;vD:$1$?$i(B
> $B$^$?2?$+E,Lu$r9M$($F$_$^$9!#(B

$B7'C+$5$s$K(B Bruce $B$5$s!"(BWunsch $B$5$s$X$*Ld$$9g$o$;D:$-!"(B
$B$42sEz$rD:$-$^$7$?!#(B $B7'C+$5$s!"$"$j$,$H$&$4$6$$$^$7$?!#(B
## $BK54Q<T$K$J$C$F$7$^$C$F!"$9$_$^$;$s!#(B (^^;)


> > > $B86J8!"(B47, 50, 54, 71$B9TL\$K$"$k!"(Bhappens to be $B$,(B
> > > $B$I$&$$$&0UL#$K$J$k$N$+$o$+$j$^$;$s!#(B (;_;)$B!6(B
# $B$J$*!"(Bfrequency$B!V<~4|!W"*!V<~GH?t!W$G$7$?$M!#(B
# ($B5$$E$+$J$+$C$?!#(B(^^;))

$B86J8(B 47, 50 $B9TL\$N3:Ev2U=j(B:
 o   The scheduling clock.  This is a real clock with frequency that
     happens to be 100.  It isn't available to applications.
 o   The statistics clock.  This is a real clock with frequency that
     happens to be 128.  It isn't directly available to applications.

$B$3$l$i$K$D$$$F$O!"<~GH?t$O(B 100/128 $B$N$O$:$@$,!"@53N$G$O$J$$(B
$B$H$$$&$3$H$@$=$&$G$9!#(B ## $B$G$9$h$M!D!)(B (^^;)
("128 today, may be different after the next reboot")
$B$&!A$s!D!"!V<~GH?t(B 128 $B$H$J$k$O$:$N!W$H$+$O$I$&$G$7$g$&$+!#(B

$B$J$*!"%"%W%j%1!<%7%g%s$+$i;H$($J$$$H$"$j$^$9$,!"(B
$B8=:_$O(B sysctl $B$+$i(B kern.clockrate $B$G;H$($k$=$&$G$9!#(B
($B%W%m%U%!%$%j%s%0%/%m%C%/$b(B)


$B86J8(B 54, 71 $B9TL\$N3:Ev2U=j(B:
 o   The clock reported by clock(3).  This is a virtual clock with a
     frequency that happens to be 128.  Its actual frequency is given
     by the macro CLOCKS_PER_SEC.
 o   The clock reported by times(3).  This is a virtual clock with a
     frequency that happens to be 128.  Its actual frequency is given
     by the macro CLK_TCK (deprecated; don't use) and by
     sysconf(SC_CLK_TCK) and by sysctl(3).

# Wunsch $B$5$s$N%a%$%k$G5$$E$$$?$N$G$9$,!"(B
# SC_CLK_TCK $B"*(B _SC_CLK_TCK $B$G$7$?!#(B

FreeBSD $B$G(B CLOCKS_PER_SEC $B$d(B sysconf(_SC_CLK_TCK) $B$,%G%U%)%k%H(B
$B<~GH?t(B 128 $B$J$N$O(B reasonable $B$@$,!"Nc$($P$3$l$i$r(B 100 (really bad
$B$@$=$&$G$9(B)$B$H$9$k$3$H$b$"$k(B(happen to)$BB>$N(B OS $B$N%(%_%e%l!<%?$G$O(B
$BLdBj$,@8$8$k$H$$$&$3$H$r$*$C$7$c$C$F$$$^$7$?!#(B
$B$D$^$j!"(BOS $B$K$h$C$FJQ$o$j$&$k$,!"(BFreeBSD $B$G$O(B 128 $B$G$"$k(B(happen to)
$B$H$$$&$3$H$G$9$M!#(B

 128 $B$r$"$^$j?.$89~$^$;$J$$%K%e%"%s%9$,=P$;$l$P$$$$$H(B
$B;W$&$N$G$9$,!D!#(B $B2?$+$J$$$G$7$g$&$+!#(B $B$H$j$"$($:!"(B
$B!V<~GH?t$,DL>o(B 128 $B$N2>A[%/%m%C%/$G$9!#!W$H$$$&0F$G!#(B
## $BD>8e$K!V<B:]$N<~4|$O!D!WJ8$,$"$k$N$GBg>fIW$@$H;W$$$^$9$,!#(B
___________________________________________
$B6bED(B $B9@;J(B  email: vanitas@ma3.seikyou.ne.jp
