ÉèÖÃSWAP
ʹÓÃfree -m
ÃüÁî²é¿´µ±Ç°ÏµÍ³Swap
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root@SunPma ~ # free -m // ²é¿´µ±Ç°SwapÉèÖÃÇé¿ö£¨¿ÉÒÔ¿´µ½µ±Ç°ÏµÍ³²¢Ã»ÓÐÐéÄâÄڴ棩
total used free shared buff/cache available
Mem: 981 73 807 0 99 787
Swap: 0 0 0
root@SunPma ~ # mkdir /swap // ´´½¨SwapÎļþ¼Ð
root@SunPma ~ # cd /swap // ½øÈëSwapÎļþ¼Ð
root@SunPma ~/swap # dd if=/dev/zero of=swapfile bs=1M count=2048 // ´´½¨Ò»¸ö2GµÄÄÚ´æÅäÖÃÎļþ
2048+0 records in
2048+0 records out
2147483648 bytes (2.1 GB, 2.0 GiB) copied, 2.13948 s, 1.0 GB/s
root@SunPma ~/swap # chmod 0600 swapfile // ÉèÖÃΪ600ȨÏÞ
root@SunPma ~/swap # mkswap swapfile // ½«ÅäÖÃÎļþת»»³ÉSwapÎļþ
Setting up swapspace version 1, size = 2 GiB (2147479552 bytes)
no label, UUID=7a6f9b23-6de5-444d-bf08-0c67bc309317
root@SunPma ~/swap # swapon swapfile // ¼¤»îSwapÎļþ
root@SunPma ~/swap # free -m // Ôٴβ鿴SwapÇé¿ö£¬È·¶¨ÊÇ·ñÉèÖóɹ¦
total used free shared buff/cache available
Mem: 981 74 67 0 839 761
Swap: 2047 0 2047
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Èç¹ûÐèÒªÓÀ¾ÃÉúЧ£¬¿ÉÒÔÐÞ¸Ä/etc/fstab
Îļþ£¬ÔÚ×îºóÌí¼ÓÈçÏ´úÂ룺
// ±à¼`/etc/fstab`Îļþ
vi /etc/fstab
// ÔÚ×îºóÌí¼ÓÒÔÏ´úÂë
/swap/swapfile swap swap defaults 0 0
ɾ³ýSWAP
ʹÓÃfree -m
ÃüÁî²é¿´ÏµÍ³Swap
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root@SunPma ~ # free -m // ²é¿´µ±Ç°SwapÉèÖÃÇé¿ö£¨µ±Ç°ÏµÍ³ÉèÖÃÓÐ1162MBµÄÐéÄâÄڴ棩
total used free shared buff/cache available
Mem: 981 270 240 6 470 564
Swap: 1162 29 1133
root@SunPma ~ # cat /proc/swaps // ²é¿´Swap¹ÒÔØλÖ㨵±Ç°ÏµÍ³ÉèÖÃÔÚ¸ùĿ¼ÏÂ/swapfile£©
Filename Type Size Used Priority
/swapfile file 1190340 29952 -2
root@SunPma ~ # swapoff /swapfile // Í£Ö¹Swap½»»»·ÖÇø£¨×¢Òâ·ÖÇøλÖã©
root@SunPma ~ # rm /swapfile // ɾ³ýSwap·ÖÇøÎļþ
root@SunPma ~ # vi /etc/fstab // ɾ³ý¿ªÆôÆô¶¯ÏîÄ¿