{"id":136,"date":"2017-04-05T14:16:46","date_gmt":"2017-04-05T06:16:46","guid":{"rendered":"http:\/\/www.jsjs.org\/?p=136"},"modified":"2017-04-05T14:16:46","modified_gmt":"2017-04-05T06:16:46","slug":"%e5%a6%82%e4%bd%95%e5%9c%a8linux-vps%e5%92%8c%e4%ba%91%e4%b8%bb%e6%9c%ba%e5%a2%9e%e5%8a%a0swap%e8%99%9a%e6%8b%9f%e5%86%85%e5%ad%98","status":"publish","type":"post","link":"https:\/\/blog.jsjs.org\/?p=136","title":{"rendered":"\u5982\u4f55\u5728Linux VPS\u548c\u4e91\u4e3b\u673a\u589e\u52a0swap\u865a\u62df\u5185\u5b58"},"content":{"rendered":"

\u60f3\u5728\u865a\u62df\u673a\u91cc\u9762\u5b89\u88c5oracle10g,\u53d1\u73b0\u9ed8\u8ba4\u7684swap\u4ea4\u6362\u7a7a\u95f4\u4e0d\u6ee1\u8db3\u6700\u4f4e\u8981\u6c42\uff0c\u56e0\u4e3a\u6211\u5206\u914d\u7684\u7269\u7406\u5185\u5b58\u662f1G\uff0c\u90a3\u4e48\u5c31\u6309\u7167\u8981\u6c42\u9700\u89812G\u7684swap\u4ea4\u6362\u7a7a\u95f4\uff0c\u9ed8\u8ba4\u53ea\u67091G\u7684\u4ea4\u6362\u7a7a\u95f4\u3002\u6dfb\u52a0swap\u4ea4\u6362\u7a7a\u95f4\u7684\u6b65\u9aa4\u5982\u4e0b\uff1a<\/p>\n

\u7b2c\u4e00\u6b65\uff1a\u786e\u4fdd\u7cfb\u7edf\u4e2d\u6709\u8db3\u591f\u7684\u7a7a\u95f4\u6765\u7528\u505aswap\u4ea4\u6362\u7a7a\u95f4\uff0c\u6211\u4f7f\u7528\u7684\u662fKVM,\u51c6\u5907\u5728\u4e00\u4e2a\u72ec\u7acb\u7684\u6587\u4ef6\u7cfb\u7edf\u4e2d\u6dfb\u52a0\u4e00\u4e2aswap\u4ea4\u6362\u6587\u4ef6\uff0c\u5728\/opt\/image\u4e2d\u6dfb\u52a02G\u7684swap\u4ea4\u6362\u6587\u4ef6<\/p>\n

\u7b2c\u4e8c\u6b65\uff1a\u6dfb\u52a0\u4ea4\u6362\u6587\u4ef6\u5e76\u8bbe\u7f6e\u5176\u5927\u5c0f\u4e3a2G\uff0c\u4f7f\u7528\u5982\u4e0b\u547d\u4ee4
\n[root@sense image]# dd if=\/dev\/zero of=\/opt\/image\/swap bs=1024 count=2048000
\n\u8fc7\u6bb5\u65f6\u95f4\u5c31\u8fd4\u56de\u5982\u4e0b\u7ed3\u679c\uff1a
\n2048000+0 records in
\n2048000+0 records out
\n2097152000 bytes (2.1 GB) copied, 272.867 seconds, 7.7 MB\/s<\/p>\n

\u7b2c\u4e09\u6b65\uff1a\u521b\u5efa\uff08\u8bbe\u7f6e\uff09\u4ea4\u6362\u7a7a\u95f4\uff0c\u4f7f\u7528\u547d\u4ee4mkswap
\n[root@sense image]# mkswap \/opt\/image\/swap
\nSetting up swapspace version 1, size = 2097147 kB<\/p>\n

\u7b2c\u56db\u6b65\uff1a\u68c0\u67e5\u73b0\u6709\u7684\u4ea4\u6362\u7a7a\u95f4\u5927\u5c0f\uff0c\u4f7f\u7528\u547d\u4ee4free
\n[root@sense image]# free -m
\ntotal\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 used\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 free\u00a0\u00a0\u00a0\u00a0 shared\u00a0\u00a0\u00a0 buffers\u00a0\u00a0\u00a0\u00a0 cached
\nMem:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 1011\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 989\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 21\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 1\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 875
\n-\/+ buffers\/cache:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 112\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 898
\nSwap:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 1027\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 1027 \u6216\u8005\u68c0\u67e5meminfo\u6587\u4ef6
\ngrep SwapTotal\u00a0 \/proc\/meminfo<\/p>\n

\u7b2c\u4e94\u6b65\uff1a\u542f\u52a8\u65b0\u589e\u52a0\u76842G\u7684\u4ea4\u6362\u7a7a\u95f4\uff0c\u4f7f\u7528\u547d\u4ee4swapon
\n[root@sense image]# swapon \/opt\/image\/swap<\/p>\n

\u7b2c\u516d\u6b65:\u786e\u8ba4\u65b0\u589e\u52a0\u76842G\u4ea4\u6362\u7a7a\u95f4\u5df2\u7ecf\u751f\u6548\uff0c\u4f7f\u7528\u547d\u4ee4free
\n[[root@sense image]# free -m
\ntotal\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 used\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 free\u00a0\u00a0\u00a0\u00a0 shared\u00a0\u00a0\u00a0 buffers\u00a0\u00a0\u00a0\u00a0 cached
\nMem:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 1011\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 995\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 15\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 4\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 877
\n-\/+ buffers\/cache:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 113\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 897
\nSwap:\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 3027\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 3027
\n\u6216\u8005\u68c0\u67e5meminfo\u6587\u4ef6
\ngrep SwapTotal\u00a0 \/proc\/meminfo<\/p>\n

\u7b2c\u4e03\u6b65\uff1a\u4fee\u6539\/etc\/fstab\u6587\u4ef6\uff0c\u4f7f\u5f97\u65b0\u52a0\u76842G\u4ea4\u6362\u7a7a\u95f4\u5728\u7cfb\u7edf\u91cd\u65b0\u542f\u52a8\u540e\u81ea\u52a8\u751f\u6548
\n\u5728\u6587\u4ef6\u6700\u540e\u52a0\u5165\uff1a
\n\/opt\/image\/swap\u00a0\u00a0\u00a0\u00a0 swap\u00a0\u00a0\u00a0\u00a0\u00a0 swap defaults 0 0
\nOK,\u7cfb\u7edf\u7684swap\u4ea4\u6362\u7a7a\u95f4\u6dfb\u52a0\u6210\u529f<\/p>\n","protected":false},"excerpt":{"rendered":"

\u60f3\u5728\u865a\u62df\u673a\u91cc\u9762\u5b89\u88c5oracle10g,\u53d1\u73b0\u9ed8\u8ba4\u7684swap\u4ea4\u6362\u7a7a\u95f4\u4e0d\u6ee1\u8db3\u6700\u4f4e\u8981\u6c42\uff0c\u56e0\u4e3a\u6211\u5206\u914d\u7684\u7269\u7406\u5185\u5b58\u662f1G\uff0c\u90a3\u4e48\u5c31\u6309\u7167\u8981\u6c42\u9700\u89812G\u7684swap\u4ea4\u6362\u7a7a\u95f4\uff0c\u9ed8\u8ba4\u53ea\u67091G\u7684\u4ea4\u6362\u7a7a\u95f4\u3002\u6dfb\u52a0swap\u4ea4\u6362\u7a7a\u95f4\u7684\u6b65\u9aa4\u5982\u4e0b\uff1a \u7b2c\u4e00\u6b65\uff1a\u786e\u4fdd\u7cfb\u7edf\u4e2d\u6709\u8db3\u591f\u7684\u7a7a\u95f4\u6765\u7528\u505aswap\u4ea4\u6362\u7a7a\u95f4\uff0c\u6211\u4f7f\u7528\u7684\u662fKVM,\u51c6\u5907\u5728\u4e00\u4e2a\u72ec\u7acb\u7684\u6587\u4ef6\u7cfb\u7edf\u4e2d\u6dfb\u52a0\u4e00\u4e2aswap\u4ea4\u6362\u6587\u4ef6\uff0c\u5728\/opt\/image\u4e2d\u6dfb\u52a02G\u7684swap\u4ea4\u6362\u6587\u4ef6 \u7b2c\u4e8c\u6b65\uff1a\u6dfb\u52a0\u4ea4\u6362\u6587\u4ef6\u5e76\u8bbe\u7f6e\u5176\u5927\u5c0f\u4e3a2G\uff0c\u4f7f\u7528\u5982\u4e0b\u547d\u4ee4 [root@sense image]# dd if=\/dev\/zero of=\/opt\/image\/swap bs=1024 count=2048000 \u8fc7\u6bb5\u65f6\u95f4\u5c31\u8fd4\u56de\u5982\u4e0b\u7ed3\u679c\uff1a 2048000+0 records in 2048000+0 records out 2097152000 bytes (2.1 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-136","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/blog.jsjs.org\/index.php?rest_route=\/wp\/v2\/posts\/136","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.jsjs.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.jsjs.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.jsjs.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.jsjs.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=136"}],"version-history":[{"count":0,"href":"https:\/\/blog.jsjs.org\/index.php?rest_route=\/wp\/v2\/posts\/136\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.jsjs.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=136"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.jsjs.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=136"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.jsjs.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=136"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}