{"action":"created","issue":{"url":"https://api.github.com/repos/moby/moby/issues/20185","repository_url":"https://api.github.com/repos/moby/moby","labels_url":"https://api.github.com/repos/moby/moby/issues/20185/labels{/name}","comments_url":"https://api.github.com/repos/moby/moby/issues/20185/comments","events_url":"https://api.github.com/repos/moby/moby/issues/20185/events","html_url":"https://github.com/moby/moby/issues/20185","id":132630720,"number":20185,"title":"1.10 docker daemon high cpu usage","user":{"login":"clkao","id":69736,"avatar_url":"https://avatars3.githubusercontent.com/u/69736?v=4","gravatar_id":"","url":"https://api.github.com/users/clkao","html_url":"https://github.com/clkao","followers_url":"https://api.github.com/users/clkao/followers","following_url":"https://api.github.com/users/clkao/following{/other_user}","gists_url":"https://api.github.com/users/clkao/gists{/gist_id}","starred_url":"https://api.github.com/users/clkao/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/clkao/subscriptions","organizations_url":"https://api.github.com/users/clkao/orgs","repos_url":"https://api.github.com/users/clkao/repos","events_url":"https://api.github.com/users/clkao/events{/privacy}","received_events_url":"https://api.github.com/users/clkao/received_events","type":"User","site_admin":false},"labels":[{"id":190258329,"url":"https://api.github.com/repos/moby/moby/labels/kind/bug","name":"kind/bug","color":"FF8C94","default":false},{"id":335124477,"url":"https://api.github.com/repos/moby/moby/labels/kind/performance","name":"kind/performance","color":"006b75","default":false}],"state":"closed","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":35,"created_at":"2016-02-10T07:56:10Z","updated_at":"2018-02-12T15:18:53Z","closed_at":"2018-02-12T15:18:53Z","author_association":"CONTRIBUTOR","body":"Although there's no running containers and this host should have done the image migration already, the daemon is in high load: \n\n```\nroot       1074 30.1  0.3 7409156 104624 ?      Ssl  Feb08 697:50 /usr/bin/docker daemon\n```\n\nrestarting the daemon seems to bring it back to normal:\n\n```\nroot      64027  0.1  0.1 978960 43112 ?        Ssl  04:13   0:00 /usr/bin/docker daemon\n```\n\nIs there anything that should be used to diagnose what's happening? strace is showing futex wait probably because everything is happening in threads.\n\nec2 c4.4xlarge instance: `Linux ip-10-0-0-4 3.19.0-49-generic #55~14.04.1-Ubuntu SMP Fri Jan 22 11:24:31 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux`\n\ndocker info:\n\n```\nContainers: 3\n Running: 0\n Paused: 0\n Stopped: 3\nImages: 230\nServer Version: 1.10.0\nStorage Driver: btrfs\nExecution Driver: native-0.2\nLogging Driver: json-file\nPlugins:\n Volume: local\n Network: host bridge null\nKernel Version: 3.19.0-49-generic\nOperating System: Ubuntu 14.04.3 LTS\nOSType: linux\nArchitecture: x86_64\nCPUs: 16\nTotal Memory: 29.44 GiB\nName: ip-10-0-0-4\nID: WQ5A:YSST:Q7BM:WDJV:EDRE:YCBF:J2BS:3OYK:Z7DX:U4JS:WHWD:DOUN\nUsername: _______\nRegistry: https://index.docker.io/v1/\nWARNING: No swap limit support\n```\n"},"comment":{"url":"https://api.github.com/repos/moby/moby/issues/comments/364953713","html_url":"https://github.com/moby/moby/issues/20185#issuecomment-364953713","issue_url":"https://api.github.com/repos/moby/moby/issues/20185","id":364953713,"user":{"login":"cpuguy83","id":799078,"avatar_url":"https://avatars3.githubusercontent.com/u/799078?v=4","gravatar_id":"","url":"https://api.github.com/users/cpuguy83","html_url":"https://github.com/cpuguy83","followers_url":"https://api.github.com/users/cpuguy83/followers","following_url":"https://api.github.com/users/cpuguy83/following{/other_user}","gists_url":"https://api.github.com/users/cpuguy83/gists{/gist_id}","starred_url":"https://api.github.com/users/cpuguy83/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/cpuguy83/subscriptions","organizations_url":"https://api.github.com/users/cpuguy83/orgs","repos_url":"https://api.github.com/users/cpuguy83/repos","events_url":"https://api.github.com/users/cpuguy83/events{/privacy}","received_events_url":"https://api.github.com/users/cpuguy83/received_events","type":"User","site_admin":false},"created_at":"2018-02-12T15:18:53Z","updated_at":"2018-02-12T15:18:53Z","author_association":"CONTRIBUTOR","body":"@shiquanwang @Lewiscowles1986 Almost certainly this is a different issue.\r\nCan you open a new one with more details?\r\n\r\nThanks!\r\n\r\nClosing this because it is a known problem due to migration of old images to content addressable storage, there was no way around it, and there was also a migration script that could be run separately  as was convenient prior to upgrades to alleviate that pain."}}
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