{"action":"closed","issue":{"url":"https://api.github.com/repos/Microsoft/vscode/issues/42513","repository_url":"https://api.github.com/repos/Microsoft/vscode","labels_url":"https://api.github.com/repos/Microsoft/vscode/issues/42513/labels{/name}","comments_url":"https://api.github.com/repos/Microsoft/vscode/issues/42513/comments","events_url":"https://api.github.com/repos/Microsoft/vscode/issues/42513/events","html_url":"https://github.com/Microsoft/vscode/issues/42513","id":292861643,"number":42513,"title":"Startup Performance regressed 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2018","description":"","creator":{"login":"egamma","id":172399,"avatar_url":"https://avatars1.githubusercontent.com/u/172399?v=4","gravatar_id":"","url":"https://api.github.com/users/egamma","html_url":"https://github.com/egamma","followers_url":"https://api.github.com/users/egamma/followers","following_url":"https://api.github.com/users/egamma/following{/other_user}","gists_url":"https://api.github.com/users/egamma/gists{/gist_id}","starred_url":"https://api.github.com/users/egamma/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/egamma/subscriptions","organizations_url":"https://api.github.com/users/egamma/orgs","repos_url":"https://api.github.com/users/egamma/repos","events_url":"https://api.github.com/users/egamma/events{/privacy}","received_events_url":"https://api.github.com/users/egamma/received_events","type":"User","site_admin":false},"open_issues":31,"closed_issues":701,"state":"open","created_at":"2017-11-23T09:16:43Z","updated_at":"2018-02-01T14:03:35Z","due_on":"2018-01-31T08:00:00Z","closed_at":null},"comments":6,"created_at":"2018-01-30T17:04:14Z","updated_at":"2018-02-01T14:03:35Z","closed_at":"2018-02-01T14:03:35Z","author_association":"MEMBER","body":"Startup performance between 1.19.3 and (todays) 1.20.0 release severely regressed from 1725ms to 2021ms. We should understand why. The value I am referring to is `\"[main, renderer] start => workbench ready\"` from 'F1 > Startup Performance'. I ran both versions, four times on fresh data and without extensions, like so (I have used one run to warm it up first):\r\n\r\n```\r\njrieken:/Applications$ open Visual\\ Studio\\ Code.app/ --args --user-data-dir=/Users/jrieken/Desktop/data_stable/ --disableExtensions\r\n\r\njrieken:/Applications$ open Visual\\ Studio\\ Code\\ -\\ Insiders.app/ --args --user-data-dir=/Users/jrieken/Desktop/data_insider/ --disableExtensions\r\n```\r\n\r\n| 1.19.3 | 1.20.0 |\r\n|---|---|\r\n| 1791 | 2004 |\r\n| 1764 | 2029 |\r\n| 1664 | 2020 |\r\n| 1682 | 2023 |\r\n"}}
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