¨t²Î¤Î¸ô®|¡GRedHat:{/usr/bin/free}
shared library¡G
libproc.so.2.0.6 => /lib/libproc.so.2.0.6 (0x4001b000)
libc.so.6 => /lib/libc.so.6 (0x40027000)
/lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x40000000)
¥Î³~»¡©ú¡G
free ·|Åã¥Ü¥X¬~²Î¤¤ ¤w¨Ï¥Î ©M ¥¼¨Ï¥Î ªº¹êÅé¡BµêÀÀ°O¾ÐÅé²Îp ¤]·|Åã¥Ü¥X kernel ¨Ï¥Îªº share memory ©M buffer ªº¤j¤p
ºKn¡G
free [-b | -k | -m] [-o] [-s delay ] [-t] [-V] ¿ï¶µ»¡©ú¡G
-b Åã¥Ü®É¥H byte ¬°³æ¦ìÅã¥Ü°O¾ÐÅ骺¤j¤p
-k Åã¥Ü®É¥H kilobyte ¬°³æ¦ìÅã¥Ü°O¾ÐÅ骺¤jj¤p (¤º©wÈ)
-m Åã¥Ü®É¥H megabyte ¬°³æ¦ìÅã¥Ü°O¾ÐÅ骺¤jj¤p
-t ¦b³Ì«á¤@¦æÅã¥Ü¥XÁ©M
-o ¨Ï¥Î®É«h¤£Åã¥Ü"buffer adjusted"ªº¨º¦ææ
-s delay ¨C¹j delay ¬í¤§«áÅã¥Ü¤@¦¸¸ê°T¡AA¨Ã¥B«ùÄò¤£Â_ªºÅã¥Ü¤U¥h...
-V Åã¥Ü free ªºª©¥»¸ê°T
¨Ï¥Î¹ê¨Ò¡G
[tstusr@WithHeart tstusr]$ free <== ¹w³]È
total used free shared buffers
cached
Mem: 127876 33360 94516 47524 3240
11556
-/+ buffers/cache: 18564 109312
[tstusr@WithHeart tstusr]$ free -b -t <== ¥Î byte ¬°³æ¦ì¡BÅã¥ÜTotal¦æ
total used free shared buffers
cached
Mem: 130945024 34160640 96784384 48668672 3317760
11833344
-/+ buffers/cache: 19009536 111935488
Total: 256864256 36839424 220024832
[tstusr@WithHeart tstusr]$ free -m -o <== ¥Î megabyte
| ¬°³æ¦ì¡B¤£Åã¥Übuffer adjusted | ||
| total cached |
used | free shared buffers |
| Mem: 124 11 |
32 | 92 46 3 |
| Swap: 120 | 2 | 117 |
| [tstusr@WithHeart tstusr]$ free | s 3 <== ¨C¤T¬íÅã¥Ü¤@¦¸¡A³Ì«á¥Î ^C | |
| ¤¤Â_ | ||
| total cached |
used | free shared buffers |
| Mem: 127876 11556 |
33360 | 94516 47528 3240 |
| -/+ buffers/cache: | 18564 | 109312 |
| Swap: 122968 | 2616 | 120352 |
| total cached |
used | free shared buffers |
| Mem: 127876 11556 |
33364 | 94512 47580 3240 |
| -/+ buffers/cache: | 18568 | 109308 |
| Swap: 122968 | 2616 | 120352 |
| total cached |
used | free shared buffers |
| Mem: 127876 11556 |
33364 | 94512 47580 3240 |
| -/+ buffers/cache: | 18568 | 109308 |
| Swap: 122968 ¨ä¥L¡G |
2616 | 120352 |
| °O¾ÐÅé¬ÛÃöªº¸ê°T³£°O¿ý¦b /proc/meminfo ³oÓÀɮ׸̱ | ||
| ¥i¥H¥u±µ cat ³oÓÀɱo¨ì¤@¨Ç°T®§... | ||
| free ´N¬O¹ï³oÓÀɮתº¸ê°T¥[¥H¾ã²z¤§«áÅã¥Ü¥X¨Óªº... | ||
[GNU/Linux] free -- À˵ø¨t²Î°O¾ÐÅé¨Ï¥Î¶q
*/ «e¨¥ /*
free -- ³o¬O¤@°¦¦b Linux console ¤UªºÀ˵ø¨t²Î°O¾ÐÅé¨Ï¥Î¶qªº ¤u¨ãµ{¦¡¡A¥]¬A¹êÅé°O¾ÐÅé¡A©M¥ÎµwºÐ¤À³Î°Ï¥N¸¹ 82 (°Ñ¦Ò linux fdisk) ªº¸m´«°O¾ÐÅé (swap memory)¡A¨ä¤¤·|¤À§O¼Ð¥Ü¥X®Ö¤ß©Ò¨Ï ¥Î¤¤ªº shared memory ¥H¤Î buffers¡C¦Ó free ©Ò¨ú±oªº¸ê°T¬O¨Ó ¦Û©ó /proc/meminfo¡A³o¬O¨t²Î§Y®É¬ö¿ý°O¾ÐÅé¸ê°TªºÀɮסCfree ªº§@ªÌ¬O Brian Edmond¡C
*/ ¸ô®| /*
¥Hµ§ªÌ¦w¸Ëªº RedHat Linux 7.0 ¬°¨Ò¡Afree ¬O©ñ¸m¦b /usr/bin ¤U¡C
*/ ©Ò¨Ï¥Îªº shared library /*
¦bµ§ªÌ©Ò¨Ï¥Îªº RedHat Linux 7.0 ¤U¡Afree ©Ò¨Ï¥Î¨ìªº shared library ¦³ libproc.so, libc.so, ld-linux.so¡C
*/ ¨Ï¥Î»¡©ú¤Î½d¨Ò */
¦b console ¤Uª½±µ¤U©R¥O free ¤£¥[¥ô¦ó°Ñ¼Æ¡A·|Åã¥Ü»P¥[¤W -k °Ñ¼Æ¬Û¦Pªº¿é¥X¡G
| [gjchen]$ | free | ||
| total | used | free shared buffers cached | |
| Mem: | 79212 | 76696 | 2516 85292 7732 31692 |
| -/+ buffers/cache: | 37272 | 41940 | |
| Swap: | 88348 | 3336 | 85012 |
¥H¤W¬O¦bµ§ªÌªº¾÷¾¹¤W°õ¦æ free ªº¿é¥Xµ²ªG¡Ctotal ÄæÅã¥Ü¹êÅé °O¾ÐÅé©M¸m´«°O¾ÐÅ骺Á`¶q¡Aused ÄæÅã¥Ü¹êÅé°O¾ÐÅé¡Bbuffer ¥H ¤Î¸m´«°O¾ÐÅ骺Á`¨Ï¥Î¶q¡A¦Ó free «h¬O³Ñ¾lªºªÅ¶¡¡Cshared ¬O «ü®Ö¤ß¤Î¦æµ{©Ò¨Ï¥Îªº¦@¨É°O¾ÐÅé¨Ï¥Î¶q¡Cbuffer ¬O¥Ø«eºÏºÐ½w ½Ä°Ïªº¤j¤p¡Ccached ¬O¨ìºÏºÐ¶¡©Ò¨Ï¥Îªº§Ö¨ú¶q¡C
¨Ï¥ÎªÌ¥i¥H¨Ï¥Î -b|-k|-m ¨Ó§ïÅÜ free ªº¿é¥Xµ²ªGªº³æ¦ì¡C-b ¬O ¥H¦ì¤¸²Õ (byte) ¬°³æ¦ì¡A-k ¬O¥H¤d¦ì¤¸²Õ (KB -- Kilobyte) ¬° ³æ¦ì¡A-m ¬O¥H¦Ê¸U¦ì¤¸²Õ (MB -- Megabyte) ¬°³æ¦ì¡C¥H¤U¤À§O¬O ¦bµ§ªÌ¹q¸£¤W°õ¦æ free -b, free -k, free -m ªºµ²ªG¡G
| [gjchen]$ | free -b | ||
| total | used | free shared buffers cached | |
| Mem: | 81113088 | 79167488 | 1945600 89714688 6782976 34041856 |
| -/+ buffers/cache: | 38342656 | 42770432 | |
| Swap: | 90468352 | 3416064 | 87052288 |
| [gjchen]$ | free -k | ||
| total | used | free shared buffers cached | |
| Mem: | 79212 | 77312 | 1900 87612 6624 33244 |
| -/+ buffers/cache: | 37444 | 41768 | |
| Swap: | 88348 | 3336 | 85012 |
| [gjchen]$ | free -m | ||
| total | used | free shared buffers cached | |
| Mem: | 77 | 75 | 1 85 6 32 |
| -/+ buffers/cache: | 36 | 40 | |
| Swap: | 86 | 3 | 83 |
-o ªº°Ñ¼Æ¬O¤£Åã¥Ü -/+ buffers/cache ¸Óªº¿é¥Xµ²ªG¡G
| [gjchen]$ | free -o | |||||
| total | used | free | shared | buffers | cached | |
| Mem: | 79212 | 76608 | 2604 | 87616 | 5980 | 33172 |
| Swap: | 88348 | 3336 | 85012 |
-t ªº°Ñ¼Æ·|¦b쥻ªº¿é¥Xµ²ªG¥[¤W¤@¦æ total ¼Ð¥Ü¥X¹êÅé°O¾Ð Åé©M¸m´«°O¾ÐÅ骺Á`¶q¡G
| [gjchen]$ | free -t | ||
| total | used | free shared buffers cached | |
| Mem: | 79212 | 77300 | 1912 89136 5456 33780 |
| -/+ buffers/cache: | 38064 | 41148 | |
| Swap: | 88348 | 3336 | 85012 |
| Total: | 167560 | 80636 | 86924 |
¦Ó¦³®ÉÔ§ÚÌ·Qn³sÄò¤@¬q®É¶¡ºÊ¬Ý°O¾ÐÅ骺¨Ï¥ÎÅܤơA«h¥i¥H ¥[¤W -s delay ªº°Ñ¼Æ¡Cdelay ¬O¤@Ó¾ã¼Æ¡Aªí¥Ü¶¡¹j¿é¥Xªº®É ¶¡¡A³æ¦ì¬O¬í¡C¦p free -s 3 ªº·N«ä¬O¨C¹j¤T¬í¿é¥X¤@¦¸ free ªºµ²ªG¡C
-V ·|Åã¥Ü free ªºª©¥»¸ê°T¡G
[gjchen]$ free -V
procps version 2.0.7
·í¨Ï¥Î free ¥[¤W¤FµL®Äªº°Ñ¼Æ®É·|¿é¥X¨Ï¥Î¤èªk (usage)¡G
[gjchen]$ free -w
free: invalid option -- w
usage: free [-b|-k|-m] [-o] [-s delay] [-t] [-V]
¦Ó§ó¸Ô²Óªº¸ê°T¥i¥H man free ±o¨ì¡C
*/ °É»~¸ê°T /*
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gjchen@csie.nctu.edu.tw ¥æ¤j¸ê¤u ³¯«Tõ