{"id":918,"date":"2010-08-08T16:11:18","date_gmt":"2010-08-08T16:11:18","guid":{"rendered":"http:\/\/pchero21.com\/?p=918"},"modified":"2010-08-08T16:11:18","modified_gmt":"2010-08-08T16:11:18","slug":"%ec%8b%9c%ec%8a%a4%ed%85%9c-%ec%b5%9c%ec%a0%81%ed%99%94-%eb%8f%99%ec%8b%9c%ec%82%ac%ec%9a%a9%ec%9e%90-%eb%8a%98%eb%a6%ac%ea%b8%b0-%ec%9c%84%ed%95%9c-%ec%bb%a4%eb%84%90-%ec%a1%b0%ec%a0%95ulimit","status":"publish","type":"post","link":"http:\/\/pchero21.com\/?p=918","title":{"rendered":"\uc2dc\uc2a4\ud15c \ucd5c\uc801\ud654 – \ub3d9\uc2dc\uc0ac\uc6a9\uc790 \ub298\ub9ac\uae30 \uc704\ud55c \ucee4\ub110 \uc870\uc815(ulimit)"},"content":{"rendered":"

 \uc774 \uae00\uc740 http:\/\/wiki.kldp.org\/KoreanDoc\/Ulimit-KLDP (\ubb38\ud0dc\uc900\ub2d8 \uc791\uc131, 2000\ub144 2\uc6d4 24\uc77c(\ubaa9))\uc744 \ud1a0\ub300\ub85c \ud544\uc790\uac00 \ub098\ub984 \ub0b4\uc6a9\uc744 \ucd94\uac00\ud558\uc5ec \uc791\uc131\ud558\ub294 \uae00\uc774\ub2e4.<\/p>\n

 \ucd5c\ub300\ud55c \uc6d0\uae00\uc758 \ub0b4\uc6a9\uc744 \uadf8\ub300\ub85c \uc720\uc9c0\ud558\ub418, \uc774\ubbf8 10\ub144\uc774\ub780 \uc138\uc6d4\uc774 \ud758\ub800\uc73c\ubbc0\ub85c \ub9ce\uc740 \ubcc0\ud654\uac00 \uc788\uc5c8\ub2e4. \uc6cc\ub099 \uc911\uc694\ud558\uace0 \uc88b\uc740 \uae00\uc774\ub77c \uadf8\ub0e5 \uadf8\ub300\ub85c \uac00\uc838\ub2e4 \uc4f0\ub824\uace0 \ud588\uc73c\ub098, \ubb54\uac00 \uc544\uc26c\uc6b4 \ub290\ub08c\uc774 \ub4e4\uc5b4 \uc5c6\ub294 \uc2e4\ub825\uc774\uc9c0\ub9cc \uc57d\uac04\uc758 \ubcf4\ucda9\uc744 \ub367\ubd99\uc5ec\ubcf4\uae30\ub85c \ud588\ub2e4.<\/p>\n

  * \uc774 \uae00\uc740 \uc2e4\uc81c\ub85c \uc81c\uac00 \ub300\ud615\uc11c\ubc84\ub97c \uc6b4\uc601\ud558\uace0 \uc788\ub294 \uc0c1\ud669\uc5d0\uc11c \ub098\uc628 \uae00\uc740 \uc808\ub300 \uc544\ub2c8\uba70, \uadf8\ub0e5 \uc5ec\uae30\uc800\uae30\uc11c \uc8fc\uc6cc\ub4e4\uc740 \uc774\uc57c\uae30\ub4e4\uacfc \uc790\ub8cc\ub4e4\uc744 \ud1a0\ub300\ub85c \ud574\uc11c \uc791\uc131\ud55c \uac83\uc785\ub2c8\ub2e4. \ub3d9\uc2dc\uc811\uc18d\uc774 \uba87\ubc31\uba85\uc5d0\uc11c \uba87\ucc9c\uba85\ub418\ub294 \uc11c\ube44\uc2a4\ub97c \ud558\ub824\uba74 \ub2e8\uc21c\ud558\uac8c \ucee4\ub110 \ucef4\ud30c\uc77c \ud55c\ubc88 \ud558\uace0 \ub05d\ub098\ub294 \uac83\uc774 \uc544\ub2c8\ub77c \uc5ec\ub7ec\uac00\uc9c0 \uc870\uc815\uc744 \ud574\uc8fc\uc5b4\uc57c \ud560 \uac83\uc774 \ub9ce\uc2b5\ub2c8\ub2e4. \ub610\ud55c \ud558\ub4dc\uc6e8\uc5b4\uc640 OS \uc81c\ud55c\uc774 \uc788\uc73c\ubbc0\ub85c \ub85c\ub4dc\ubc38\ub7f0\uc2f1(\ubd80\ud558\ubd84\uc0b0), \ud2b8\ub798\ud53d \ubd84\uc0b0 \ub4f1\uc744 \ud558\ub294 \uc2a4\uc704\uce6d \uc7a5\ube44, \ud074\ub7ec\uc2a4\ud130\ub9c1 \uc2dc\uc2a4\ud15c \uad6c\uc131\uc774 \ud544\uc694\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uadf8\ub9cc\ud07c \uc124\uacc4\ub97c \uc798\ud574\uc57c\ud569\ub2c8\ub2e4. \uc5ec\uae30\uc5d0 \uc5b8\uae09\ud55c \uac83\uc740 \ub2e8\uc9c0 \uc27d\uac8c \ud560 \uc218 \uc788\ub294 \ub9db\ubcf4\uae30 \uc815\ub3c4\uc774\uc9c0\uc694. \uc774\ub85c \uc778\ud574\uc11c \uc0dd\uae30\ub294 \uc190\ud574\uc5d0 \ub300\ud574\uc11c\ub294 \ubcf8\uc778\uc774 \uc808\ub300 \ucc45\uc784\uc744 \uc9c0\uc9c0 \uc54a\uc2b5\ub2c8\ub2e4. \ub610\ud55c \ub0b4\uc6a9 \uc911 \ud2c0\ub9b0 \ubd80\ubd84\ub3c4 \ub9ce\uc774 \uc788\uc744 \uac83\uc785\ub2c8\ub2e4.
<\/p>\n

  * \ub4e4\uc5b4\uac00\uba70<\/span><\/p>\n

 \ub300\uaddc\ubaa8 \uc11c\ube44\uc2a4\ub97c \uc900\ube44\ud558\ub294 \uacbd\uc6b0 \uc6b4\uc601\uccb4\uc81c\uc758 \uc81c\ud55c\uc0ac\ud56d\uc744 \uba3c\uc800 \ud655\uc778\ud574\uc57c \ud55c\ub2e4. \ub3d9\uc2dc\uc5d0 \uc5f4\uc218 \uc788\ub294 \ucd1d\ud30c\uc77c \uc218, \ud55c \ud504\ub85c\uc138\uc2a4\uac00 \uc5f4\uc218 \uc788\ub294 \ud30c\uc77c \uc218 \ub4f1\ub4f1.<\/p>\n

 \uc608\ub97c \ub4e4\uc5b4 \ub300\ud615 \uc6f9\uc11c\ubc84\ub97c \uc544\ud30c\uce58\ub85c \uc11c\ube44\uc2a4\ud558\ub294 \uacbd\uc6b0\ub97c \uc0dd\uac01\ud574\ubcf4\uc790. \uc544\ud30c\uce58\ub294 \uae30\ubcf8\uc801\uc73c\ub85c \ud504\ub85c\uc138\uc2a4 \ubc29\uc2dd\uc73c\ub85c \uc11c\ube44\uc2a4\ub97c \ucc98\ub9ac\ud55c\ub2e4. \uc774\uac74 \uc0ac\uc6a9\uc790\uc758 \uc694\uad6c\uac00 \uc62c\ub54c\ub9c8\ub2e4 \ud558\ub098\uc758 \ud504\ub85c\uc138\uc2a4\ub97c \ub744\uc6b0\ubbc0\ub85c \ub9cc\uc57d \ub3d9\uc2dc\uc5d0 10\uba85\uc758 \uc0ac\uc6a9\uc790\uac00 \uc811\uc18d\uc744 \ud558\uba74 10\uac1c\uc758 \ud504\ub85c\uc138\uc2a4\uac00 \ub5a0\uc57c\ud55c\ub2e4\ub294 \uac83\uc774\ub2e4. \ucd5c\uadfc\uc758 \uc544\ud30c\uce58 \uc11c\ubc84\ub294 MaxClients 150 \uc774\ub77c\uace0 \uc124\uc815\ub418\uc5b4 \uc788\ub2e4. \uc774\uac74 \ub3d9\uc2dc\uc5d0 150 \uac1c\uc758 \ud504\ub85c\uc138\uc2a4\ub97c \ub744\uc6b8 \uc218 \uc788\uc73c\uba70 \uacb0\uad6d \ub3d9\uc2dc\uc5d0 150\uba85\uc744 \ubc1b\uc544 \ub4e4\uc77c \uc218 \uc788\ub2e4\ub294 \uac83\uc774\ub2e4(\uc2e4\uc81c\ub85c \uc774\uc815\ub3c4\ub9cc \ud558\ub354\ub77c\ub3c4 \uc808\ub300\ub85c \uc791\uc740 \uaddc\ubaa8\ub294 \uc544\ub2c8\ub2e4). \uadf8\ub7f0\ub370 \ub9cc\uc57d nobody\uac00 \ub9cc\ub4e4\uc5b4\ub0bc \uc218 \uc788\ub294 \ucd5c\ub300 \ud504\ub85c\uc138\uc2a4 \uac1c\uc218\uac00 \uadf8 \uc774\ud558\ub77c\uba74? \ub2f9\uc5f0\ud788 \ubb38\uc81c\uac00 \uc0dd\uae38 \uac83\uc774\ub2e4. \ubb3c\ub860 \ucd5c\uadfc \ub808\ub4dc\ud587 6.0 \uc774\uc0c1 \ubc84\uc804\uc740 \uadf8 \uc774\uc0c1\uc73c\ub85c \ub9de\ucd94\uc5b4\uc838 \uc788\uc5b4\uc11c \ubb38\uc81c\uac00 \uc0dd\uae30\uc9c0\ub294 \uc54a\uaca0\uc9c0\ub9cc.<\/p>\n

 \ubb38\uc81c\ub294 \ud504\ub85c\uc138\uc2a4\uac00 \ub9ce\uc774 \ub728\uba74 \ud504\ub85c\uc138\uc2a4\ubfd0\ub9cc \uc544\ub2c8\ub77c \uc5f4 \uc218 \uc788\ub294 \ud30c\uc77c \uc218\uc5d0\uc11c\ub3c4 \ubb38\uc81c\uac00 \ub41c\ub2e4.<\/p>\n

 \uadf8\ub7ec\uba74 \uba3c\uc800 \ud504\ub85c\uc138\uc2a4\uc758 \uc790\uc6d0 \ud55c\ub3c4\uc5d0 \ub300\ud574\uc11c \uc54c\uc544\ubcf4\uc790.<\/p>\n

 -\uc8fc<\/span>
 \uc774 \uae00\uc744 \uc791\uc131\ud558\ub294 \ud604\uc7ac(2010.07.08) \ub9ce\uc740 \uac83\uc774 \ubc14\ub00c\uc5b4\uc84c\ub2e4. \ud604\uc7ac \ud544\uc790\uac00 \uc6b4\uc6a9\ud558\ub294 \uc544\ud30c\uce58\uc758 \ubc84\uc804\uc740 2.2.14 \ubc84\uc804\uc744 \uc0ac\uc6a9\uc911\uc774\uace0, (\uc6d0 \uae00\ub2d8\uc774 \uae00\uc744 \uc791\uc131\ud558\uc168\uc744 10\ub144\uc804\uc5d0\ub294 \uc544\ub9c8 1.7.X \ubc84\uc804\uc73c\ub85c \uc0ac\uc6a9\ub418\uc5c8\uc73c\ub9ac\ub77c \uc0dd\uac01\ud55c\ub2e4) \uc544\ud30c\uce58\uc758 \uad6c\ub3d9 \ubc29\uc2dd\ub3c4 \ud558\ub098\uc758 \uc694\uccad\ub9c8\ub2e4 \ud558\ub098\uc758 \ud504\ub85c\uc138\uc2a4\ub97c \ub744\uc6b0\ub294 \ubc29\uc2dd\uc774 \uc544\ub2cc \uba54\uc18c\ub4dc \ubc0f \uae30\ud0c0 \ubc29\uc2dd\uc744 \uc0ac\uc6a9\ud558\ub294 \ud615\uc2dd\uc73c\ub85c \ubc14\ub00c\uc5c8\ub2e4. \uadf8\ub9ac\uace0 \uc544\uc6b8\ub7ec MaxClient\uc758 \uc218\ub3c4 \uc99d\uac00\ud588\uc74c\uc740 \ubb3c\ub860\uc774\ub2e4.<\/p><\/blockquote>\n

 * \ud504\ub85c\uc138\uc2a4\uc758 \uc790\uc6d0\ud55c\ub3c4<\/span><\/p>\n

 \ud504\ub85c\uc138\uc2a4\uc758 \uc790\uc6d0\ud55c\ub3c4\ub97c \ub9ac\ub205\uc2a4\uc5d0\uc11c\ub294 ulimit \ub97c \ud1b5\ud574\uc11c \uc54c \uc218 \uc788\ub2e4.<\/p>\n

 ulimit \uc635\uc158<\/p>\n

 -a \ubaa8\ub4e0 \uc81c\ud55c \uc0ac\ud56d\uc744 \ubcf4\uc5ec\uc900\ub2e4.
 -c \ucd5c\ub300 \ucf54\uc5b4 \ud30c\uc77c \uc0ac\uc774\uc988
 -d \ud504\ub85c\uc138\uc2a4 \ub370\uc774\ud130 \uc138\uadf8\uba3c\ud2b8\uc758 \ucd5c\ub300 \ud06c\uae30
 -f shell\uc5d0 \uc758\ud574 \ub9cc\ub4e4\uc5b4\uc9c8 \uc218 \uc788\ub294 \ud30c\uc77c\uc758 \ucd5c\ub300 \ud06c\uae30
 -s \ucd5c\ub300 \uc2a4\ud0dd \ud06c\uae30
 -p \ud30c\uc774\ud504 \ud06c\uae30
 -n \uc624\ud508 \ud30c\uc77c\uc758 \ucd5c\ub300 \uc218
 -u \ud504\ub85c\uc138\uc2a4 \ucd5c\ub300 \uc218
 -v \ucd5c\ub300 \uac00\uc0c1 \uba54\ubaa8\ub9ac\uc758 \ub7c9<\/p><\/blockquote>\n

 # ulimit -a (\ub610\ub294 ulimit -Sa) —> soft \ud55c\ub3c4<\/p>\n

jonathan@jonathan-laptop:~$ ulimit -a
core file size          (blocks, -c) 0
data seg size           (kbytes, -d) unlimited
scheduling priority             (-e) 20
file size               (blocks, -f) unlimited
pending signals                 (-i) 16382
max locked memory       (kbytes, -l) 64
max memory size         (kbytes, -m) unlimited
open files                      (-n) 1024
pipe size            (512 bytes, -p) 8
POSIX message queues     (bytes, -q) 819200
real-time priority              (-r) 0
stack size              (kbytes, -s) 8192
cpu time               (seconds, -t) unlimited
max user processes              (-u) unlimited
virtual memory          (kbytes, -v) unlimited
file locks                      (-x) unlimited<\/p><\/blockquote>\n

 # ulimit -Ha —-> Hard \ud55c\ub3c4<\/p>\n

jonathan@jonathan-laptop:~$ ulimit -Ha
core file size          (blocks, -c) unlimited
data seg size           (kbytes, -d) unlimited
scheduling priority             (-e) 20
file size               (blocks, -f) unlimited
pending signals                 (-i) 16382
max locked memory       (kbytes, -l) 64
max memory size         (kbytes, -m) unlimited
open files                      (-n) 1024
pipe size            (512 bytes, -p) 8
POSIX message queues     (bytes, -q) 819200
real-time priority              (-r) 0
stack size              (kbytes, -s) unlimited
cpu time               (seconds, -t) unlimited
max user processes              (-u) unlimited
virtual memory          (kbytes, -v) unlimited
file locks                      (-x) unlimited<\/p><\/blockquote>\n

 \uc18c\ud504\ud2b8 \ud55c\ub3c4(soft)\ub294 \uc0c8\ub85c\uc6b4 \ud504\ub85c\uc138\uc2a4\uac00 \ub9cc\ub4e4\uc5b4\uc84c\uc744 \ub54c \ub514\ud3f4\ud2b8\ub85c \uc801\uc6a9\ub418\ub294 \uc790\uc6d0\uc758 \ud55c\ub3c4\uc774\ub2e4. \uc774\uac83\uc744 \ud558\ub4dc\ud55c\ub3c4\uae4c\uc9c0 \ub4f1\uac00\uc2dc\ud0ac \uc218 \uc788\ub2e4. \uadf8\ub807\uc9c0\ub9cc \uc774 \ud55c\ub3c4\ub97c \ub118\uc5b4\uc11c \ud655\uc7a5\ud558\ub294 \uac83\uc740 \uc288\ud37c\uc720\uc800\ub9cc\uc774 \uac00\ub2a5\ud558\ub2e4.<\/p>\n

 \uc989, \ud558\ub4dc\ud55c\ub3c4\ub294 \uc808\ub300\uc801\uc778 \uc120\uc774\ub2e4.<\/p>\n

 \uadf8\ub807\ub2e4\uba74 \ud558\ub4dc\ud55c\ub3c4\ub294 \uc288\ud37c\uc720\uc800\ub77c\uace0 \ubb34\ud55c\ub300\ub85c \ub298\ub9b4 \uc218 \uc788\ub294\uac00?
-> \uc808\ub300 \uc544\ub2c8\ub2e4. \uc774\uac74 \ucee4\ub110\ucc28\uc6d0\uc5d0\uc11c \uc9c0\uc815\uc744 \ud574\uc57c \ud55c\ub2e4.<\/p>\n

 \uc704\uc5d0\uc11c\uc758 \uac01 \ud56d\ubaa9\uc744 \uc0b4\ud3b4\ubcf4\uc790\uba74…<\/p>\n

core file size          -> \ucf54\uc5b4\ud30c\uc77c\uc758 \ucd5c\ub300\ud06c\uae30
\ndata seg size           -> \ud504\ub85c\uc138\uc2a4\uc758 \ub370\uc774\ud130 \uc138\uadf8\uba3c\ud2b8 \ucd5c\ub300\ud06c\uae30
\nscheduling priority
\nfile size               (blocks, -f) unlimited  -> \uc258\uc5d0\uc11c \uc0dd\uc131\ub418\ub294 \ud30c\uc77c\uc758 \ucd5c\ub300 \ud06c\uae30
\npending signals                 (-i) 16382
\nmax locked memory       (kbytes, -l) 64
\nmax memory size         (kbytes, -m) unlimited  -> resident set size\uc758 \ucd5c\ub300 \ud06c\uae30(\uba54\ubaa8\ub9ac \ucd5c\ub300\ud06c\uae30)
\nopen files                      (-n) 1024    -> \ud55c \ud504\ub85c\uc138\uc2a4\uc5d0\uc11c \uc5f4 \uc218 \uc788\ub294 open file descriptor\uc758 \ucd5c\ub300 \uc22b\uc790(\uc5f4\uc218 \uc788\ub294 \ucd5c\ub300 \ud30c\uc77c \uc218)
\npipe size            (512 bytes, -p) 8    -> 512-\ubc14\uc774\ud2b8 \ube14\ub7ed\uc758 \ud30c\uc774\ud504 \ud06c\uae30
\nPOSIX message queues     (bytes, -q) 819200
\nreal-time priority              (-r) 0
\nstack size              (kbytes, -s) 8192
\ncpu time               (seconds, -t) unlimited     -> \ucd1d \ub204\uc801\ub41c CPU \uc2dc\uac04(\ucd08)
\nmax user processes              (-u) unlimited   -> \ub2e8\uc77c \uc720\uc800\uac00 \uc0ac\uc6a9\uac00\ub2a5\ud55c \ud504\ub85c\uc138\uc2a4\uc758 \ucd5c\ub300 \uac2f\uc218
\nvirtual memory          (kbytes, -v) unlimited   -> \uc258\uc5d0\uc11c \uc0ac\uc6a9\uac00\ub2a5 \ud55c \uac00\uc0c1 \uba54\ubaa8\ub9ac\uc758 \ucd5c\ub300 \uc6a9\ub7c9
\nfile locks                      (-x) unlimited<\/p><\/blockquote>\n

 \uc758 \ub73b\uc744 \uac00\uc9c0\uace0 \uc788\ub2e4.<\/p>\n

 \uc704\uc758 \ub0b4\uc6a9 \uc911 \uc8fc\uc758\uae4a\uac8c \uc0b4\ud3b4\ubcfc \ubd80\ubd84\uc774 \ubc14\ub85c \ud55c \ud504\ub85c\uc138\uc2a4\uc5d0\uc11c \uc5f4 \uc218 \uc788\ub294 file descriptor \uc758 \uac2f\uc218\ub97c \ud45c\uc2dc\ud55c open files \ud56d\ubaa9\uacfc \ud55c \uc720\uc800\uac00 \uc0dd\uc131 \uac00\ub2a5\ud55c \ud504\ub85c\uc138\uc2a4\uc758 \uac2f\uc218 \ubd80\ubd84\uc774\ub2e4.<\/p>\n

 \uc0ac\uc2e4 \uc774\ubbf8 \ud55c \uc720\uc800\uac00 \uc0dd\uc131 \uac00\ub2a5\ud55c \ud504\ub85c\uc138\uc2a4\uc758 \uac2f\uc218\uac00 \ubb34\ud55c\uc815\uc73c\ub85c \ub418\uc5b4 \uc788\uc73c\ubbc0\ub85c file descriptor \uc758 \uac2f\uc218\ub294 \uadf8\ub2e4\uc9c0 \ud070 \uc758\ubbf8\uac00 \uc5c6\ub2e4. \ud558\uc9c0\ub9cc file descriptor\uc758 \uac2f\uc218\ub97c \ub298\ub9ac\uace0 \uc2f6\ub2e4\uba74 \ub2e4\uc74c\uc758 \ubc29\ubc95\uc73c\ub85c \uac00\ub2a5\ud558\ub2e4.<\/p>\n

 1. \uc18c\uc2a4\ud30c\uc77c\uc744 \uc218\uc815\ud55c \ud6c4, \ucee4\ub110 \uc7ac\ucef4\ud30c\uc77c\uc744 \ud558\ub294 \ubc29\ubc95.<\/p>\n

 2. \/proc \ub97c \uc774\uc6a9\ud558\uc5ec \ubcc0\uacbd\ud558\ub294 \ubc29\ubc95.<\/p>\n

 3. \/etc\/security\/limits.conf \ud30c\uc77c\uc744 \uc218\uc815\ud558\ub294 \ubc29\ubc95<\/p>\n

 \uc0ac\uc2e4 ulimit \uba85\ub839\uc73c\ub85c \uc870\uc808\uc774 \uac00\ub2a5\ud558\ub098, \ub2e8\uc9c0 \ubcf4\uc5ec\uc8fc\uae30\ub9cc \ud560 \ubfd0 \uc2e4\uc81c\uc801\uc778 \uc218\uc815\uc774 \ub418\uc9c0 \uc54a\ub294\ub2e4\uace0 \uc6d0\uae00\uc5d0\ub294 \ub098\uc640\uc788\uc5c8\ub2e4. \uadf8\ub798\uc11c ulimit \uad00\ub828 \ubd80\ubd84\uc740 \ud328\uc2a4.<\/p>\n

 \uadf8\ub7ec\ub098, \ud504\ub85c\uadf8\ub798\ubc0d\uc758 \uacbd\uc6b0\ub294 ulimit \ud568\uc218\ub97c \ud1b5\ud574\uc11c \uc218\uc815\uc774 \uac00\ub2a5\ud558\ub2e4.<\/p>\n

NAME
       ulimit – get and set user limits<\/p>\n

SYNOPSIS
       #include <ulimit.h><\/p>\n

       long ulimit(int cmd, long newlimit);<\/p>\n

DESCRIPTION
       Warning: This routine is obsolete.  Use getrlimit(2), setrlimit(2), and
       sysconf(3) instead.  For the shell command ulimit(), see bash(1).<\/p>\n

       The ulimit() call will get or set some limit for the  calling  process.
       The cmd argument can have one of the following values.<\/p>\n

       UL_GETFSIZE
              Return the limit on the size of a file, in units of 512 bytes.<\/p>\n

       UL_SETFSIZE
              Set the limit on the size of a file.<\/p>\n

       3      (Not  implemented  for  Linux.)   Return  the  maximum  possible
              address of the data segment.<\/p>\n

       4      (Implemented but no symbolic  constant  provided.)   Return  the
              maximum number of files that the calling process can open.<\/p>\n

RETURN VALUE
       On  success,  ulimit()  returns  a non-negative value.  On error, -1 is
       returned, and errno is set appropriately.<\/p>\n

ERRORS
       EPERM  A non-root process tried to increase a limit.<\/p>\n

CONFORMING TO
       SVr4, POSIX.1-2001.  POSIX.1-2008 marks ulimit() as obsolete.<\/p>\n

SEE ALSO
       bash(1), getrlimit(2), setrlimit(2), sysconf(3)<\/p><\/blockquote>\n

 2. proc\ub97c \uc774\uc6a9\ud55c \ubc29\ubc95<\/p>\n

 proc\ub97c \uc774\uc6a9\ud558\uc5ec \uac04\ub2e8\ud788 \ubcc0\uacbd\ud558\ub294 \ubc29\ubc95\uc774 \uc788\ub2e4.<\/p>\n

pchero@MyNote:~$ cat \/proc\/sys\/fs\/file-max
6553600
pchero@MyNote:~$ sudo echo 7000000 > \/proc\/sys\/fs\/file-max<\/span><\/font><\/font><\/p><\/blockquote>\n

 \ud558\uc9c0\ub9cc \/proc \ub97c \uc0ac\uc6a9\ud558\uc5ec \uc2dc\uc2a4\ud15c \uc124\uc815\uc744 \ubcc0\uacbd\ud560 \uacbd\uc6b0, \ub9e4 \ubd80\ud305\uc2dc \uc124\uc815\uc744 \ub2e4\uc2dc \ud574\uc8fc\uc5b4\uc57c \ud55c\ub2e4\ub294 \ub2e8\uc810\uc774 \uc788\ub2e4.
 \/etc\/rc.local \ud30c\uc77c\uc744 \uc774\uc6a9\ud558\uc5ec \uba85\ub839\uc5b4\ub97c \uc124\uc815\ud558\ub358\uac00 \uc544\ub2c8\uba74 \ub2e4\uc74c\uc5d0 \ub098\uc624\ub294 limits.conf \ud30c\uc77c\uc744 \uc774\uc6a9\ud558\ub3c4\ub85d \ud55c\ub2e4.<\/p>\n

 3. \uc0ac\uc6a9\uc790\uc5d0 \ub530\ub978 \uc790\uc6d0 \ud55c\ub3c4 \uc124\uc815 \ud30c\uc77c
\n\/etc\/security\/limits.conf
<\/span><\/p>\n

# \/etc\/security\/limits.conf
#
#Each line describes a limit for a user in the form:
#
#<domain>        <type>  <item>  <value>
#
#Where:
#<domain> can be:
#        – an user name
#        – a group name, with @group syntax
#        – the wildcard *, for default entry
#        – the wildcard %, can be also used with %group syntax,
#                 for maxlogin limit
#        – NOTE: group and wildcard limits are not applied to root.
#          To apply a limit to the root user, <domain> must be
#          the literal username root.
#
#<type> can have the two values:
#        – “soft” for enforcing the soft limits
#        – “hard” for enforcing hard limits
#
#<item> can be one of the following:
#        – core – limits the core file size (KB)
#        – data – max data size (KB)
#        – fsize – maximum filesize (KB)
#        – memlock – max locked-in-memory address space (KB)
#        – nofile – max number of open files
#        – rss – max resident set size (KB)
#        – stack – max stack size (KB)
#        – cpu – max CPU time (MIN)
#        – nproc – max number of processes
#        – as – address space limit (KB)
#        – maxlogins – max number of logins for this user
#        – maxsyslogins – max number of logins on the system
#        – priority – the priority to run user process with
#        – locks – max number of file locks the user can hold
#        – sigpending – max number of pending signals
#        – msgqueue – max memory used by POSIX message queues (bytes)
#        – nice – max nice priority allowed to raise to values: [-20, 19]
#        – rtprio – max realtime priority
#        – chroot – change root to directory (Debian-specific)
#
#<domain>      <type>  <item>         <value>
#<\/p>\n

#*               soft    core            0
#root            hard    core            100000
#*               hard    rss             10000
#@student        hard    nproc           20
#@faculty        soft    nproc           20
#@faculty        hard    nproc           50
#ftp             hard    nproc           0
#ftp             –       chroot          \/ftp
#@student        –       maxlogins       4<\/p>\n

# End of file<\/p>\n

# Setting for oracle
oracle          soft    nproc           2047
oracle          hard    nproc           16383
oracle          soft    nofile          1023
oracle          hard    nofile          6553<\/p>\n<\/blockquote>\n

  \uc81c\uc77c \uc544\ub798 ‘oracle’ \uacfc \uac19\uc774 \ub530\ub85c \uc124\uc815\ub41c \ubd80\ubd84\uacfc \uac19\uc774 \ubcc0\uacbd\ud558\uba74 \ub41c\ub2e4. \uc774\ub807\uac8c \uc124\uc815\ud560 \uacbd\uc6b0, \ub9e4 \ubd80\ud305\uc2dc \uc790\ub3d9 \uc801\uc6a9\ub418\uc5b4 \ubcc4\ub3c4\ub85c \uc801\uc6a9\ud558\uc9c0 \uc54a\uc544\ub3c4 \ub41c\ub2e4. \ub610\ud55c, \uac01\uac01\uc758 \uc720\uc800\ub9c8\ub2e4 \ub2e4\ub978 \uc124\uc815\uc744 \uc801\uc6a9\ud560 \uc218 \uc788\uc73c\ubbc0\ub85c \ubcf4\uc548 \ubc0f \uad00\ub9ac\uc5d0\ub3c4 \uc6a9\uc774\ud558\ub2e4.<\/p>\n

 # \ub9c8\uc9c0\ub9c9\uc73c\ub85c \ud504\ub85c\uc138\uc2a4\uc5d0\uc11c \uc5f4\uc5b4\ub193\uc740 \ud30c\uc77c\uc744 \ud655\uc778\ud558\ub294 \ubc29\ubc95\uc5d0 \ub300\ud574 \uc54c\uc544\ubcf4\uc790.<\/p>\n

 \uacb0\ub860\uc801\uc73c\ub85c lsof \ud504\ub85c\uadf8\ub7a8\uc744 \uc774\uc6a9\ud558\uba74 \ub41c\ub2e4.<\/p>\n

 lsof\ub294 ‘List Open File’\uc758 \uc57d\uc790\ub85c \ud574\ub2f9 System\uc5d0\uc11c \uad6c\ub3d9\ub418\uace0 \uc788\ub294 \ud504\ub85c\uc138\uc2a4\ub4e4\uc5d0 \uc758\ud574\uc11c \uc5f4\ub824\uc9c4 \ud30c\uc77c\ub4e4\uc744 \ud655\uc778 \ud560 \uc218
\n\uc788\ub294 \ud234\uc774\ub2e4. \uc2dc\uc2a4\ud15c\uc758 \uc758\uc2ec\uc2a4\ub7ec\uc6b4 \ud504\ub85c\uc138\uc2a4\uc5d0 \ub300\ud55c \ud655\uc778\uc774 \uc6a9\uc774\ud558\uace0, \uc124\uce58\uac00 \ube44\uad50\uc801 \uc26c\uc6cc \ub9ce\uc774 \uc774\uc6a9\ub418\uace0 \uc788\ub2e4. <\/p>\n

 lsof\uc5d0 \uad00\ud55c \ub0b4\uc6a9\uc740 \uc6cc\ub099 \ubc29\ub300\ud558\uc5ec \uc544\ub798\uc5d0 \ud574\ub2f9 \ud504\ub85c\uadf8\ub7a8 \uc0ac\uc6a9\uc5d0 \ub300\ud55c \ub9e4\ub274\uc5bc\uc744 \ub9c1\ud06c\ud574\ub454\ub2e4. \ub610\ud55c man lsof\ub97c \uc774\uc6a9\ud558\uc5ec \uc0ac\uc6a9\ud574\ub3c4 \ubb34\ubc29\ud558\ub2e4.<\/p>\n

http:\/\/www.superuser.co.kr\/security\/certcc\/secu_certcc_15.htm<\/p>\n

 <\/p>\n","protected":false},"excerpt":{"rendered":"

 \uc774 \uae00\uc740 http:\/\/wiki.kldp.org\/KoreanDoc\/Ulimit-KLDP (\ubb38\ud0dc\uc900\ub2d8 \uc791\uc131, 2000\ub144 2\uc6d4 24\uc77c(\ubaa9))\uc744 \ud1a0\ub300\ub85c \ud544\uc790\uac00 \ub098\ub984 \ub0b4\uc6a9\uc744 \ucd94\uac00\ud558\uc5ec \uc791\uc131\ud558\ub294 \uae00\uc774\ub2e4.  \ucd5c\ub300\ud55c \uc6d0\uae00\uc758 \ub0b4\uc6a9\uc744 \uadf8\ub300\ub85c \uc720\uc9c0\ud558\ub418, \uc774\ubbf8 10\ub144\uc774\ub780 \uc138\uc6d4\uc774 \ud758\ub800\uc73c\ubbc0\ub85c \ub9ce\uc740 \ubcc0\ud654\uac00 \uc788\uc5c8\ub2e4. \uc6cc\ub099 \uc911\uc694\ud558\uace0 \uc88b\uc740 \uae00\uc774\ub77c \uadf8\ub0e5 \uadf8\ub300\ub85c \uac00\uc838\ub2e4 \uc4f0\ub824\uace0 \ud588\uc73c\ub098, \ubb54\uac00 \uc544\uc26c\uc6b4 \ub290\ub08c\uc774 \ub4e4\uc5b4 … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[25],"tags":[241,397,616,681],"class_list":["post-918","post","type-post","status-publish","format-standard","hentry","category-25","tag-linux","tag-ulimit","tag-616","tag-681"],"_links":{"self":[{"href":"http:\/\/pchero21.com\/index.php?rest_route=\/wp\/v2\/posts\/918","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/pchero21.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/pchero21.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/pchero21.com\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/pchero21.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=918"}],"version-history":[{"count":0,"href":"http:\/\/pchero21.com\/index.php?rest_route=\/wp\/v2\/posts\/918\/revisions"}],"wp:attachment":[{"href":"http:\/\/pchero21.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=918"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/pchero21.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=918"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/pchero21.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=918"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}