{"action":"opened","issue":{"url":"https://api.github.com/repos/zfsonlinux/zfs/issues/3105","labels_url":"https://api.github.com/repos/zfsonlinux/zfs/issues/3105/labels{/name}","comments_url":"https://api.github.com/repos/zfsonlinux/zfs/issues/3105/comments","events_url":"https://api.github.com/repos/zfsonlinux/zfs/issues/3105/events","html_url":"https://github.com/zfsonlinux/zfs/issues/3105","id":57627541,"number":3105,"title":"Slow creation of dataset","user":{"login":"behlendorf","id":148917,"avatar_url":"https://avatars.githubusercontent.com/u/148917?v=3","gravatar_id":"","url":"https://api.github.com/users/behlendorf","html_url":"https://github.com/behlendorf","followers_url":"https://api.github.com/users/behlendorf/followers","following_url":"https://api.github.com/users/behlendorf/following{/other_user}","gists_url":"https://api.github.com/users/behlendorf/gists{/gist_id}","starred_url":"https://api.github.com/users/behlendorf/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/behlendorf/subscriptions","organizations_url":"https://api.github.com/users/behlendorf/orgs","repos_url":"https://api.github.com/users/behlendorf/repos","events_url":"https://api.github.com/users/behlendorf/events{/privacy}","received_events_url":"https://api.github.com/users/behlendorf/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/zfsonlinux/zfs/labels/Performance","name":"Performance","color":"DDDDDD"}],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-02-13T17:23:56Z","updated_at":"2015-02-13T17:23:56Z","closed_at":null,"body":"Originally opened at zfsonlinux/spl#432 by @michalstab.\r\n\r\nTime to create dataset is longer with every new dataset. Tested on:\r\npackage zfs-0.6.3-1.2.el6.x86_64 (CentOS release 6.6 2.6.32-504.8.1.el6.x86_64)\r\n\r\npackage zfs-0.6.3-1.2.el7.centos.x86_64 (CentOS release 7-0.1406 3.10.0-123.13.2.el7.x86_64)\r\n\r\nWith 7278 datasets\r\n\r\n```\r\n[root@localhost ~]# time zfs create pool1/home2/aaas2\r\nreal    0m23.651s\r\nuser    0m19.804s\r\nsys 0m3.567s\r\nWith 7280 datasets\r\n\r\n[root@localhost ~]# time zfs create pool1/home2/aaaps2\r\nreal    0m24.234s\r\nuser    0m20.013s\r\nsys 0m4.005s\r\n```\r\n\r\nOn FreeBSD works correctly."}}