{"id":767,"date":"2017-01-19T09:50:44","date_gmt":"2017-01-19T01:50:44","guid":{"rendered":"http:\/\/www.ipcpu.com\/?p=767"},"modified":"2017-01-19T09:50:44","modified_gmt":"2017-01-19T01:50:44","slug":"mongodb-oom","status":"publish","type":"post","link":"https:\/\/c.ipcpu.com\/2017\/01\/mongodb-oom\/","title":{"rendered":"MongoDB\u5185\u5b58\u5360\u7528\u8fc7\u5927\uff0c\u6700\u540eOOM\u7684\u89e3\u51b3\u529e\u6cd5"},"content":{"rendered":"

MongoDB\u5185\u5b58\u5360\u7528\u8fc7\u5927\uff0c\u6700\u540eOOM.md<\/p>\n

<\/p>\n

\u73b0\u8c61<\/h2>\n

\u4e00\u5f00\u59cb\u5360\u7528\u5185\u5b58\u523080%\uff0c\u540e\u6765\u4e00\u76f4\u4e0a\u5347\uff0c95%\uff0c\u518d\u540e\u6765\u5c31OOM\u4e86\u3002<\/p>\n

  1. May<\/span>  <\/span>1<\/span> <\/span>18<\/span>:<\/span>04<\/span>:<\/span>08<\/span> ali<\/span>-<\/span>mongo kernel<\/span>:<\/span> <\/span>Out<\/span> of memory<\/span>:<\/span> <\/span>Kill<\/span> process <\/span>31008<\/span> <\/span>(<\/span>mongod<\/span>)<\/span> score <\/span>258<\/span> <\/span>or<\/span> sacrifice child<\/span><\/code><\/li>
  2. May<\/span>  <\/span>1<\/span> <\/span>18<\/span>:<\/span>04<\/span>:<\/span>08<\/span> ali<\/span>-<\/span>mongo kernel<\/span>:<\/span> <\/span>Killed<\/span> process <\/span>31008<\/span>,<\/span> UID <\/span>0<\/span>,<\/span> <\/span>(<\/span>mongod<\/span>)<\/span> total<\/span>-<\/span>vm<\/span>:<\/span>6047828kB<\/span>,<\/span> anon<\/span>-<\/span>rss<\/span>:<\/span>4699464kB<\/span>,<\/span> file<\/span>-<\/span>rss<\/span>:<\/span>1348kB<\/span><\/code><\/li>
  3. May<\/span>  <\/span>1<\/span> <\/span>18<\/span>:<\/span>04<\/span>:<\/span>08<\/span> ali<\/span>-<\/span>mongo kernel<\/span>:<\/span> mongod invoked oom<\/span>-<\/span>killer<\/span>:<\/span> gfp_mask<\/span>=<\/span>0x201da<\/span>,<\/span> order<\/span>=<\/span>0<\/span>,<\/span> oom_adj<\/span>=<\/span>0<\/span>,<\/span> oom_score_adj<\/span>=<\/span>0<\/span><\/code><\/li>
  4. May<\/span>  <\/span>1<\/span> <\/span>18<\/span>:<\/span>04<\/span>:<\/span>08<\/span> ali<\/span>-<\/span>mongo kernel<\/span>:<\/span> mongod cpuset<\/span>=\/<\/span> mems_allowed<\/span>=<\/span>0<\/span><\/code><\/li>
  5. May<\/span>  <\/span>1<\/span> <\/span>18<\/span>:<\/span>04<\/span>:<\/span>08<\/span> ali<\/span>-<\/span>mongo kernel<\/span>:<\/span> <\/span>Pid<\/span>:<\/span> <\/span>8982<\/span>,<\/span> comm<\/span>:<\/span> mongod <\/span>Not<\/span> tainted <\/span>2.6<\/span>.<\/span>32<\/span>-<\/span>573.22<\/span>.<\/span>1.el6.x86<\/span>_64 <\/span>#1<\/span><\/code><\/li>
  6. May<\/span>  <\/span>1<\/span> <\/span>18<\/span>:<\/span>04<\/span>:<\/span>08<\/span> ali<\/span>-<\/span>mongo kernel<\/span>:<\/span> <\/span>Call<\/span> <\/span>Trace<\/span>:<\/span><\/code><\/li>
  7. May<\/span>  <\/span>1<\/span> <\/span>18<\/span>:<\/span>04<\/span>:<\/span>08<\/span> ali<\/span>-<\/span>mongo kernel<\/span>:<\/span> <\/span>[<<\/span>ffffffff810d7151<\/span>>]<\/span> <\/span>?<\/span> cpuset_print_task_mems_allowed<\/span>+<\/span>0x91<\/span>\/<\/span>0xb0<\/span><\/code><\/li>
  8. May<\/span>  <\/span>1<\/span> <\/span>18<\/span>:<\/span>04<\/span>:<\/span>08<\/span> ali<\/span>-<\/span>mongo kernel<\/span>:<\/span> <\/span>[<<\/span>ffffffff8112a950<\/span>>]<\/span> <\/span>?<\/span> dump_header<\/span>+<\/span>0x90<\/span>\/<\/span>0x1b0<\/span><\/code><\/li><\/ol><\/pre>\n
    \u89e3\u51b3\u529e\u6cd5:<\/h2>\n
    \u914d\u7f6e\u6587\u4ef6\u91cc\u52a0\u5165\u4e86 cacheSizeGB: 3<\/p>\n
    1. storage<\/span>:<\/span><\/code><\/li>
    2.  engine<\/span>:<\/span> wiredTiger<\/span><\/code><\/li>
    3.  wiredTiger<\/span>:<\/span><\/code><\/li>
    4.   engineConfig<\/span>:<\/span><\/code><\/li>
    5.    cacheSizeGB<\/span>:<\/span> <\/span>3<\/span><\/code><\/li><\/ol><\/pre>\n
      \u76f8\u5173\u89e3\u91ca<\/h2>\n
      MongoDB3.4\u5f00\u59cb\uff0cWiredTiger\u5c06\u4f1a\u5185\u90e8\u7f13\u5b58\u5c06\u4f1a\u5360\u7528\u4ee5\u4e0b\uff08\u8f83\u5927\u7684\u4e00\u4e2a\uff09\u5185\u5b58\u7a7a\u95f4\uff1a<\/p>\n
      \n
      50%\u7684\u5185\u5b58\u51cf\u53bb1GB 
      \n  256MB<\/p>\n<\/blockquote>\n
      \u7531\u4e8e\u4f7f\u7528\u4e86\u7cfb\u7edf\u7f13\u5b58\uff0cMongoDB\u5b9e\u9645\u4e0a\u4f1a\u4f7f\u7528\u6389\u6240\u6709\u6ca1\u6709\u88abWiredTiger\u5185\u90e8\u7f13\u5b58\u548c\u5176\u4ed6\u5e94\u7528\u7a0b\u5e8f\u5360\u7528\u7684\u5185\u5b58\u7a7a\u95f4\u3002\u6587\u4ef6\u7cfb\u7edf\u7f13\u5b58\u4e2d\u7684\u6570\u636e\u662f\u88ab\u538b\u7f29\u8fc7\u7684<\/p>\n
      \u4e3a\u4e86\u8c03\u6574WiredTiger\u5185\u90e8\u7f13\u5b58\u5927\u5c0f\uff0c\u53ef\u4ee5\u901a\u8fc7\u8bbe\u5b9a\u53c2\u6570storage.wiredTiger.engineConfig.cacheSizeGB\u6216\u8005\u2013wiredTigerCacheSizeGB\u3002\u907f\u514d\u8bbe\u7f6e\u7684\u5185\u90e8\u7f13\u5b58\u5927\u5c0f\u5927\u4e8e\u9ed8\u8ba4\u503c\uff08\u4e2a\u4eba\u8ba4\u4e3a\u8fd9\u6837\u5904\u7406\u53ef\u80fd\u662f\u4e3a\u4e86\u9632\u6b62\u5185\u5b58\u6ea2\u51fa\u7684\u95ee\u9898\uff09<\/p>\n
      \u6ce8\u610f\uff1astorage.wiredTiger.engineConfig.cacheSizeGB\u9650\u5236\u7684\u662fWiredTiger\u5185\u90e8\u7f13\u5b58\u5360\u7528\u5185\u5b58\u5927\u5c0f\u3002\u56e0\u4e3a\u4f7f\u7528\u6587\u4ef6\u7cfb\u7edf\u7f13\u5b58\u7684\u539f\u56e0\uff0c\u64cd\u4f5c\u7cfb\u7edf\u4f1a\u4f7f\u7528\u5269\u4f59\u7684\u5168\u90e8\u5185\u5b58\u7a7a\u95f4\uff08\u6240\u4ee5\u8dd1\u7740\u5927\u4e1a\u52a1\u91cf\u7684mongod\u7684\u673a\u5668\u5185\u5b58\u4f7f\u7528\u603b\u4f1a100%\uff09\u3002<\/p>\n
      \u8fd9\u4e2a\u8bbe\u5b9a\uff08WiredTiger\u5185\u90e8\u7f13\u5b58\u9ed8\u8ba4\u503c\uff09\u7684\u524d\u63d0\u662f\u4e00\u4e2a\u673a\u5668\u4e0a\u53ea\u8fd0\u884c\u4e00\u4e2amongod\u5b9e\u4f8b\uff0c\u5982\u679c\u4f60\u7684\u673a\u5668\u4e0a\u8fd0\u884c\u4e86\u591a\u4e2amongod\u5b9e\u4f8b\u7684\u8bdd\uff0c\u5e94\u8be5\u628a\u8fd9\u4e2a\u914d\u7f6e\u76f8\u5bf9\u8c03\u4f4e\u3002\u751f\u4ea7\u73af\u5883\u4e0d\u63a8\u8350\u4e00\u4e2a\u673a\u5668\u4e0a\u542f\u52a8\u591a\u4e2amongod\u8fdb\u7a0b\u3002<\/p>\n
      \u5982\u679c\u662f\u5728\u5bb9\u5668\u4e2d\u8fd0\u884cmongod\u5b9e\u4f8b\uff08\u5355\u4e2a\u5bb9\u5668\u5f80\u5f80\u6ca1\u6709\u6743\u9650\u4f7f\u7528\u5168\u90e8\u5185\u5b58\uff09\uff0c\u8fd9\u65f6\u5019\u9700\u8981\u628astorage.wiredTiger.engineConfig.cacheSizeGB\u7684\u503c\u8bbe\u7684\u5c0f\u4e8e\u5bb9\u5668\u53ef\u4f7f\u7528\u7684\u5185\u5b58\u7a7a\u95f4\u5927\u5c0f<\/p>\n
      \u67e5\u770bWiredTiger\u5185\u90e8\u7f13\u5b58\u5230\u5e95\u5360\u7528\u4e86\u591a\u5c11\u5185\u5b58\u7684\u65b9\u5f0f\u662f\uff0c\u5728mongo shell\u4e2d\u4e4b\u884c\u4ee5\u4e0b\u547d\u4ee4<\/p>\n
      1. db.runCommand( { serverStatus: 1 } ).wiredTiger.cache[\"bytes currently in the cache\"]<\/span>:<\/span><\/code><\/li><\/ol><\/pre>\n
        \u5982\u679c\u4e0d\u60f3\u91cd\u542fmongoDB\uff0c\u53ef\u4ee5\u5728\u7ebf\u4fee\u6539\uff0c\u5982\u4e0b<\/p>\n
        1. db.adminCommand({setParameter: 1, wiredTigerEngineRuntimeConfig: \"cache_size=8G\"})<\/span>:<\/span><\/code><\/li><\/ol><\/pre>\n
          \u53c2\u8003\u8d44\u6599<\/h2>\n
          http:\/\/www.kivixv.com\/2017\/07\/10\/mongo\/mongodb%E7%94%9F%E4%BA%A7%E9%83%A8%E7%BD%B2%E5%BB%BA%E8%AE%AE\/<\/a><\/p>\n
          \u8f6c\u8f7d\u8bf7\u6ce8\u660e\uff1aIPCPU-\u7f51\u7edc\u4e4b\u8def<\/a> » MongoDB\u5185\u5b58\u5360\u7528\u8fc7\u5927\uff0c\u6700\u540eOOM\u7684\u89e3\u51b3\u529e\u6cd5<\/a><\/p>","protected":false},"excerpt":{"rendered":"
          MongoDB\u5185\u5b58\u5360\u7528\u8fc7\u5927\uff0c\u6700\u540eOOM.md \u73b0\u8c61 \u4e00\u5f00\u59cb\u5360\u7528\u5185\u5b58\u523080%\uff0c\u540e\u6765\u4e00\u76f4\u4e0a\u5347\uff0c95%\uff0c\u518d\u540e\u6765\u5c31OOM\u4e86\u3002 May 1 18:04:08 ali-mongo kernel: Out of memory: Kill process 31008 (mongod) score 258 or sacrifice childMay 1 18:04:08 ali-mongo kernel: Killed process 31008, UID 0, (mongod) total-vm:6047828kB, anon-rss:4699464kB, file-rss:1348kBMay 1 18:04:08 ali-mongo kernel: mongod invoked oom-killer: gfp_mask=0x201da, order=0, oom_adj=0, oom_score_adj=0May 1 18:04:08 ali-mongo kernel: mongod cpuset=\/ mems_allowed=0May 1 18:04:08 ali-mongo kernel: […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[13],"tags":[130],"_links":{"self":[{"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/posts\/767"}],"collection":[{"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/comments?post=767"}],"version-history":[{"count":0,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/posts\/767\/revisions"}],"wp:attachment":[{"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/media?parent=767"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/categories?post=767"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/tags?post=767"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}