{"id":782,"date":"2017-05-31T08:58:55","date_gmt":"2017-05-31T00:58:55","guid":{"rendered":"http:\/\/www.shuran.cn\/?p=782"},"modified":"2017-05-31T08:58:55","modified_gmt":"2017-05-31T00:58:55","slug":"virtual-memory-exhausted-cannot-allocate-memory","status":"publish","type":"post","link":"https:\/\/www.shuran.cn\/?p=782","title":{"rendered":"virtual memory exhausted: Cannot allocate memory"},"content":{"rendered":"<pre class=\"prettyprint lang-js\">[root@Byrd byrd]# free -m\r\n             total       used       free     shared    buffers     cached\r\nMem:           512        108        403          0          0         28\r\n-\/+ buffers\/cache:         79        432\r\nSwap:            0          0          0\r\n\r\n[root@Byrd ~]# mkdir \/opt\/images\/\r\n\r\n[root@Byrd ~]# rm -rf \/opt\/images\/swap\r\n\r\n[root@Byrd ~]# dd if=\/dev\/zero of=\/opt\/images\/swap bs=1024 count=2048000\r\n2048000+0 records in\r\n2048000+0 records out\r\n2097152000 bytes (2.1 GB) copied, 82.7509 s, 25.3 MB\/s\r\n\r\n[root@Byrd ~]# mkswap \/opt\/images\/swap\r\nmkswap: \/opt\/images\/swap: warning: don't erase bootbits sectors\r\n        on whole disk. Use -f to force.\r\nSetting up swapspace version 1, size = 2047996 KiB\r\nno label, UUID=59daeabb-d0c5-46b6-bf52-465e6b05eb0b\r\n\r\n[root@hz mnt]# swapon \/opt\/images\/swap\r\n\r\n[root@hz mnt]# free -m\r\n             total       used       free     shared    buffers     cached\r\nMem:           488        481          7          0          6        417\r\n-\/+ buffers\/cache:         57        431\r\nSwap:          999          0        999<\/pre>\n<p>\n\t\u5185\u5b58\u592a\u5c0f\uff0c\u589e\u52a0\u5185\u5b58\u53ef\u4ee5\u89e3\u51b3\u3002<br \/>\n\u4f7f\u7528\u5b8c\u6bd5\u540e\u53ef\u4ee5\u5173\u6389swap\uff1a\n<\/p>\n<p><pre class=\"prettyprint lang-js\">[root@hz mnt]# swapoff swap  \r\n[root@hz mnt]# rm -f \/opt\/images\/swap <\/pre>\n<div id=\"article_content\" class=\"article_content tracking-ad\" style=\"margin:20px 0px 0px;font-size:14px;font-family:Arial;color:#333333;background-color:#FFFFFF;\">\n\t\tswap\u6587\u4ef6\u4e5f\u53ef\u4ee5\u4e0d\u5220\u9664\uff0c\u7559\u7740\u4ee5\u540e\u4f7f\u7528\uff0c\u5173\u952e\u662f\u4f60\u7684\u865a\u62df\u673a\u786c\u76d8\u591f\u7528\u3002\n\t<\/div>\n<div>\n\t\t\n\t<\/div>\n<div class=\"bdsharebuttonbox tracking-ad bdshare-button-style0-16\" style=\"color:#333333;font-family:Arial, Console, Verdana, &quot;background-color:#FFFFFF;\">\n\t<\/div>\n<p>\u5173\u673a\u91cd\u542f\u9700\u8981\u91cd\u65b0\u8fd0\u884c\u547d\u4ee4\n<\/p>\n<p>\n\t\n<\/p>\n<p>\n\t<\/p>\n","protected":false},"excerpt":{"rendered":"<p>[root@Byrd byrd]# free -m total used free shared buffer\u2026 <span class=\"read-more\"><a href=\"https:\/\/www.shuran.cn\/?p=782\">Read More &raquo;<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[10],"tags":[],"class_list":["post-782","post","type-post","status-publish","format-standard","hentry","category-os"],"_links":{"self":[{"href":"https:\/\/www.shuran.cn\/index.php?rest_route=\/wp\/v2\/posts\/782","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.shuran.cn\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.shuran.cn\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.shuran.cn\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.shuran.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=782"}],"version-history":[{"count":1,"href":"https:\/\/www.shuran.cn\/index.php?rest_route=\/wp\/v2\/posts\/782\/revisions"}],"predecessor-version":[{"id":783,"href":"https:\/\/www.shuran.cn\/index.php?rest_route=\/wp\/v2\/posts\/782\/revisions\/783"}],"wp:attachment":[{"href":"https:\/\/www.shuran.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=782"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shuran.cn\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=782"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shuran.cn\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=782"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}