{"action":"created","issue":{"url":"https://api.github.com/repos/atom/atom/issues/3480","labels_url":"https://api.github.com/repos/atom/atom/issues/3480/labels{/name}","comments_url":"https://api.github.com/repos/atom/atom/issues/3480/comments","events_url":"https://api.github.com/repos/atom/atom/issues/3480/events","html_url":"https://github.com/atom/atom/issues/3480","id":42122189,"number":3480,"title":"Copy paste performance on large amount of text - display and syntax highlighting","user":{"login":"xixixao","id":1473433,"avatar_url":"https://avatars.githubusercontent.com/u/1473433?v=3","gravatar_id":"","url":"https://api.github.com/users/xixixao","html_url":"https://github.com/xixixao","followers_url":"https://api.github.com/users/xixixao/followers","following_url":"https://api.github.com/users/xixixao/following{/other_user}","gists_url":"https://api.github.com/users/xixixao/gists{/gist_id}","starred_url":"https://api.github.com/users/xixixao/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/xixixao/subscriptions","organizations_url":"https://api.github.com/users/xixixao/orgs","repos_url":"https://api.github.com/users/xixixao/repos","events_url":"https://api.github.com/users/xixixao/events{/privacy}","received_events_url":"https://api.github.com/users/xixixao/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/atom/atom/labels/performance","name":"performance","color":"f7c6c7"}],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":2,"created_at":"2014-09-06T17:52:53Z","updated_at":"2015-02-19T17:46:03Z","closed_at":null,"body":"Hi,\r\n\r\nThere is probably an issue for this, but just in case: I just compared CodeMirror, Ace and Atom in terms of performance, by pasting in [jQuery 2.2.1](http://code.jquery.com/jquery-2.1.1.js), my observations:\r\n\r\n- [Ace](http://ace.c9.io/build/kitchen-sink.html) and [CodeMirror](http://codemirror.net/demo/sublime.html) performance is identical\r\n- Both display the source instantaneously (FF 31, Mac), syntax highlighted\r\n- Atom takes some time, probably sub-second, to display the text. It takes several seconds! to finish highlighting the source\r\n\r\nIf you guys have an insight into why this is so, I'd greatly appreciate some overview. Thanks for open-sourcing Atom!"},"comment":{"url":"https://api.github.com/repos/atom/atom/issues/comments/75099797","html_url":"https://github.com/atom/atom/issues/3480#issuecomment-75099797","issue_url":"https://api.github.com/repos/atom/atom/issues/3480","id":75099797,"user":{"login":"lee-dohm","id":1038121,"avatar_url":"https://avatars.githubusercontent.com/u/1038121?v=3","gravatar_id":"","url":"https://api.github.com/users/lee-dohm","html_url":"https://github.com/lee-dohm","followers_url":"https://api.github.com/users/lee-dohm/followers","following_url":"https://api.github.com/users/lee-dohm/following{/other_user}","gists_url":"https://api.github.com/users/lee-dohm/gists{/gist_id}","starred_url":"https://api.github.com/users/lee-dohm/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/lee-dohm/subscriptions","organizations_url":"https://api.github.com/users/lee-dohm/orgs","repos_url":"https://api.github.com/users/lee-dohm/repos","events_url":"https://api.github.com/users/lee-dohm/events{/privacy}","received_events_url":"https://api.github.com/users/lee-dohm/received_events","type":"User","site_admin":false},"created_at":"2015-02-19T17:46:03Z","updated_at":"2015-02-19T17:46:03Z","body":"#5534 should have helped with copy/pasting large amounts of text. Please try it again and let us know if this is still an issue."}}