/proc/sys/kernel/* ˴ؤʸ     ͥС 2.2.10
        (c) 1998, 1999,  Rik van Riel <riel@nl.linux.org>

ŪʾˡŪˤĤƤϡREADME 򸫤Ƥ

==================================================================

Υեˤ /proc/sys/kernel  sysctl ե˴ؤ
ʸ񤬴ޤޤƤꡢLinux ͥС 2.2 Фͭ
Ǥ

Υǥ쥯ȥΥեϡLinux ͥΥڥ졼
¿Ū塼˥󥰤˥󥰤
뤿˻Ѥ뤳ȤǤޤƥˤƤ
ޤե⤢ΤǡºݤĴ򤪤ʤˡʸ񤪤
ɤξɤळȤ򤪴ᤷޤ

ߤΤȤ(ˤޤ) Υե뷲 /proc/sys/kernel
ʲˤޤ

  - acct
  - core_pattern
  - core_uses_pid
  - ctrl-alt-del
  - dentry-state
  - domainname
  - hostname
  - htab-reclaim                [ PPC Τ ]
  - hotplug
  - java-appletviewer           [ binfmt_java, obsolete ]
  - java-interpreter            [ binfmt_java, obsolete ]
  - l2cr                        [ PPC Τ ]
  - modprobe                    ==> Documentation/kmod.txt
  - msgmax
  - msgmnb
  - msgmni
  - osrelease
  - ostype
  - overflowgid
  - overflowuid
  - panic
  - pid_max
  - powersave-nap               [ PPC Τ ]
  - printk
  - real-root-dev               ==> Documentation/initrd.txt
  - reboot-cmd                  [ SPARC Τ ]
  - rtsig-max
  - rtsig-nr
  - sem
  - sg-big-buff                 [  SCSI ǥХ (sg) ]
  - shmall
  - shmmax                      [ sysv ipc ]
  - shmmni
  - stop-a                      [ SPARC Τ ]
  - sysrq                       ==> Documentation/sysrq.txt
  - tainted
  - threads-max
  - version
  - zero-paged                  [ PPC Τ ]

==================================================================

acct:

highwater lowwater frequency

BSD Υץƥ󥰤ͭˤʤäƤ硢
ưϤͤ椵ޤϤե륷
ƥζΰ褬 <lowwater>% ̤ˤʤä硢ƥ󥰤
Ǥޤΰ褬 <highwater>% Ķȡƥ
ϺƳޤ<frequency> ϡΰ̤å٤
ñ̤ǻꤹΤǤǥեͤϼΤȤǤ

  4 2 30

ĤޤꡢĤζΰ褬 2% ʲΤȤƥ󥰤Ǥ
4% ʾˤʤȺƳޤ30 ôͭǤΰ̤ξ
θޤ

==================================================================

core_pattern:

core_pattern ϥץեΥѥ̾ꤹΤ˻
ޤ

  * Ĺ 64 ʸǥեͤ "core"

  * core_pattern Ͻϥե̾Υѥƥץ졼ȤȤƻ
    ޤʸѥ ('%' ǤϤޤ) ϡ
    μºݤ֤ͤޤ

  * core_uses_pid Ȥθߴޤ
      core_pattern  "%p" ޤޤƤ餺 (ǥեȤǤϴޤޤ
      ޤ) core_uses_pid åȤƤ硢.PID 
      ե̾ղäޤ

  * ̾եޥåȻؼ
      %<NUL>    '%' Ϻޤ
      %%        '%' ĽϤޤ
      %p        ץ ID
      %u        桼 ID
      %g        롼 ID
      %s        ʥֹ
      %t        פ UNIX 
      %h        ۥ̾
      %e        ¹Էե̾
      %<OTHER>  ξȤޤ

==================================================================

core_uses_pid:

ǥեȤΥץե̾ "core" Ǥcore_uses_pid 
 1 ˥åȤ뤳Ȥˤꡢץե̾ core.PID ˤʤ
ޤcore_pattern  "%p" ޤޤƤ餺 (ǥեȤǤϴޤޤ
ޤ) core_uses_pid åȤƤ硢.PID ե
̾ղäޤ

==================================================================

ctrl-alt-del:

Υեͤ 0 ΤȤctrl-alt-del ª졢ǫʺ
ư򤪤ʤ褦 init(1) Ϥޤͤ 0 礭
ȤϡVulcan Nerve Pinch (tm) (եȥ֡Ȥ⤷
ROM ˥ؤΥפ򤪤ʤȹ礻Τȡ:
http://www.catb.org/~esr/jargon/html/V/Vulcan-nerve-pinch.html)
Ф Linux ȿϡƥХåեƱʤʤ
¨֡ȤǤ

ա(dosemu Τ褦) ץब 'raw' ⡼ɤǥܡɤ
ѤƤϡctrl-alt-del ϡͥ TTY 쥤Ϥ
ˤΥץˤäªޤctrl-alt-del ǲ򤹤뤫
ΤϡΥץǤ

==================================================================

domainname & hostname:

Υեϡdomainname ޥɤ hostname ޥɤ
Ʊ褦ˡޥ NIS/YP ɥᥤ̾ȥۥ̾ꤹ뤿
Ѥ뤳ȤǤޤĤޤꡢ

  # echo "darkstar" > /proc/sys/kernel/hostname
  # echo "mydomain" > /proc/sys/kernel/domainname

ϼΤΤƱ̤ޤ

  # hostname "darkstar" > /proc/sys/kernel/hostname
  # domainname "mydomain" > /proc/sys/kernel/domainname

㤨 darkstar.frop.org  "darkstar" Ȥۥ̾ "frop.org"
Ȥ DNS (Internet Domain Name Server) ɥᥤ̾ǹ
ޤ NIS (Network Information Service) / YP (Yellow
Pages) ɥᥤ̾ȺƱƤϤޤΤǡդƤ
ĤΥɥᥤ̾ϰ̤˰ۤʤޤܺ٤ʵˤĤƤ
hostname(1)  man ڡ򻲾ȤƤ

==================================================================

htab-reclaim: (PPC Τ)

򥼥ʳͤ˥åȤȡƥबɥ롼פˤʤ
Ӥ PowerPC htab (Documentation/powerpc/ppc_htab.txt 򻲾)
ڤͤޤ

==================================================================

hotplug:

ۥåȥץ饰ݥꥷȤΥѥǤǥեͤ
"/sbin/hotplug" Ǥ

==================================================================

l2cr: (PPC Τ)

Υե饰ϡG3 ץåܡɤ L2 å椷ޤ
0 ξ硢å̵ǤʳʤͭǤ

==================================================================

osrelease, ostype & version:

  # cat osrelease
  2.1.88

  # cat ostype
  Linux

  # cat version
  #5 Wed Feb 25 21:49:24 MET 1998

osrelease  ostype ե뤬ʤΤϽʬΤǤ礦
version ϾɬפǤ'#5' ϡΥ١ 5
ܤΥͥӥɤǤ뤳Ȥ̣³ϡͥ
ӥɤ줿򼨤Ƥޤͤ塼˥󥰤
ͣˡϡͥƥӥɤ뤳ȤǤ :-)

==================================================================

overflowgid & overflowuid:

ƥ㤬 32 ӥå UID ˥ݡȤƤ櫓ǤϤʤ
ʤ (Ĥޤꥢƥ㤬 arm, i386, m68k, sh, sparc32 ʤ),
ºݤ UID ޤ GID  65535 Ķ硢Ť 16 ӥå UID/
GID ƥॳѤƤ륢ץꥱˤϸ UID/GID
֤ޤ

 sysctl եǡθ UID/GID ͤѹǤޤ
ǥեͤ 65534 Ǥ

==================================================================

panic:

Υեͤϡѥ˥åȯ֡Ȥ˥ͥ뤬
Եÿ򼨤ƤޤեȥåɥåѤ
硢侩 60 Ǥ

==================================================================

panic_on_oops:

oops ޤ BUG ˻äȤΥͥư椷ޤ

  0: ڥ졼η³ߤޤ

  1: Ե (klogd  oops ϤϿ֤Ϳ뤿),
     θѥ˥åȤޤ⤷ `panic' sysctl ե⥼
     ʳʤСθޥϥ֡Ȥޤ

==================================================================

pid_max:

PID Ƥνͥ͡μ PID ͤͤãȤ
PID Ǿͤᤵޤpid_max ʾͤ PID ϳƤ


==================================================================

powersave-nap: (PPC Τ)

åȤƤ硢Linux-PPC ϾϤ 'nap' ⡼ɤѤ
ޤǤʤϡ'doze' ⡼ɤѤޤ

==================================================================

printk:

printk  4 ĤͤϤ줾졢console_loglevel,
default_message_loglevel, minimum_console_loglevel,
default_console_loglevel ̣ޤ

ͤϡ顼åɽޤϥϤκݤ printk()
ư˱ƶͿޤۤʤ٥˴ؤܺ٤ʾˤĤ
Ƥϡ'man 2 syslog' 򻲾ȤƤ

  - console_loglevel: ⤤ͥ٤Υåϡ
    ɽޤ
  - default_message_level: Ūͥ٤ͿƤʤ
    ϡͥ٤ǽϤޤ
  - minimum_console_loglevel: console_loglevel ˥åȤǤ
    Ǿ (Ǥ⤤) ͡
  - default_console_loglevel: console_loglevel Υǥե͡

==================================================================

printk_ratelimit:

®٤¤Ƥٹåޤprintk_ratelimit ϡ
Τ褦ʥå֤κǾֳִ֤ jiffies ñ̤ǻꤹ
ǤǥեȤǤϡ5 äȤ˰ĤΥåϤǽǤ

ͤ 0 ˤȡ®¤̵ˤʤޤ

==================================================================

printk_ratelimit_burst:

ĤΥåȤ printk_ratelimit äȤĹ֤
ǡåŪ˽Ϥ뤳ȤǽǤ
printk_ratelimit_burst ϡ®¤ưФ뤳Ȥ
ǽʥåοꤹΤǤ

==================================================================

reboot-cmd: (Sparc Τ)

??? ϡSparc ROM/Flash ֡ȥ˰Ϳ뤿μ
Τ褦Ǥ餯֡ȸ˲򤹤٤ؼ뤿
ΤǤ礦???

==================================================================

rtsig-max & rtsig-nr:

rtsig-max եϡƥǻѲǽʡPOSIX ꥢ륿
(塼󥰤) ʥκͤ塼˥󥰤뤿˻
뤳ȤǤޤ

rtsig-nr ϡߥ塼󥰤Ƥꥢ륿ॷʥο
򼨤Ƥޤ

==================================================================

sg-big-buff:

Υեϡ SCSI (sg) ХåեΥ򼨤Ƥޤ
塼˥󥰤뤳ȤϤޤǤޤ󤬡include/scsi/sg.h
Խ SG_BIG_BUFF ͤѹ뤳Ȥˤꡢѥ
ͤѹ뤳ȤǤޤ

ͤѹͳ̵ϤǤ⤷ͳפդȤ
ǤʤСˤƤ⡢ʤϤ餯ʬ򤷤Ƥ
ΤʬäƤϤǤ :)

==================================================================

shmmax:

ͤϡǽʶͭꥻȤκ祵μ¹Ի
䤤碌ꤷꤹΤ˻ѤǤޤߤΤȤ
1Gb ޤǤζͭꥻȤͥǥݡȤƤޤ
ǥեͤ SHMMAX Ǥ

==================================================================

tainted:

ͥ뤬Ƥ硢󥼥ˤʤޤͤǤꡢ
ΤΤ¤Ȥ뤳ȤǤޤ

  1 -  GPL Υ⥸塼뤬ɤޤˤϥ饤󥹤
      ̵Τޤޤޤ
  2 - 'insmod -f' ˤꡢŪ˥⥸塼뤬ɤޤ
      2.4.9 ʾ modutils  module-init-tools ˤꥻåȤ
      ޤ
  4 - Ǥʤ SMP ץåǤSMP Ѥ߷פƤʤ
      CPU Ѥ SMP Ǥ

==================================================================

zero-paged: (PPC Τ)

ͭξ (󥼥ξ), Linux-PPC ϡɥ롼ǥ
ꥢ줿ڡѰդޤ֤get_free_pages ®
ʤޤϡɥ롼פ¹Ԥ뤳Ȥˤƶʤ
ΤǡͭˤƲѲ뤫ǧƤߤ٤Ǥ


------------------------------------------------------------
Ρ JF ץ < http://www.linux.or.jp/JF/ >
ǽ 2004/07/29
ԡ    ɧ <takahiko(a)hakubi.co.jp>
ԡ   Seiji Kaneko <skaneko(a)a2.mbn.or.jp>
