{"action":"created","issue":{"url":"https://api.github.com/repos/Polymer/lit-html/issues/536","repository_url":"https://api.github.com/repos/Polymer/lit-html","labels_url":"https://api.github.com/repos/Polymer/lit-html/issues/536/labels{/name}","comments_url":"https://api.github.com/repos/Polymer/lit-html/issues/536/comments","events_url":"https://api.github.com/repos/Polymer/lit-html/issues/536/events","html_url":"https://github.com/Polymer/lit-html/issues/536","id":366942823,"node_id":"MDU6SXNzdWUzNjY5NDI4MjM=","number":536,"title":"Performance","user":{"login":"tylergraf","id":751054,"node_id":"MDQ6VXNlcjc1MTA1NA==","avatar_url":"https://avatars0.githubusercontent.com/u/751054?v=4","gravatar_id":"","url":"https://api.github.com/users/tylergraf","html_url":"https://github.com/tylergraf","followers_url":"https://api.github.com/users/tylergraf/followers","following_url":"https://api.github.com/users/tylergraf/following{/other_user}","gists_url":"https://api.github.com/users/tylergraf/gists{/gist_id}","starred_url":"https://api.github.com/users/tylergraf/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/tylergraf/subscriptions","organizations_url":"https://api.github.com/users/tylergraf/orgs","repos_url":"https://api.github.com/users/tylergraf/repos","events_url":"https://api.github.com/users/tylergraf/events{/privacy}","received_events_url":"https://api.github.com/users/tylergraf/received_events","type":"User","site_admin":false},"labels":[],"state":"closed","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":7,"created_at":"2018-10-04T19:47:27Z","updated_at":"2018-11-21T19:37:47Z","closed_at":"2018-11-21T19:37:47Z","author_association":"NONE","body":"Hi, you guys are awesome!\r\n\r\nQuick question about performance. I've noticed that lit has dropped quite a bit in https://github.com/krausest/js-framework-benchmark between versions `0.7.1` and `0.11.0-dev.1` (rounds [7](https://www.stefankrause.net/js-frameworks-benchmark7/table.html) and [8](https://stefankrause.net/js-frameworks-benchmark8/table.html) in the results tables). I'm also preparing a presentation for next week talking about performance between polymer, lit, etc. and noticed that it was much slower than polymer 1, 2 and 3. So I pinned back to version `0.6` and it dropped back down in my test of creating and updating 1000 nodes.\r\n\r\nDo you know what's making it slower and are the plans to resolve that? Thanks!\r\n\r\n### round 7 (0.7.1)\r\n![image](https://user-images.githubusercontent.com/751054/46498861-d760a300-c7db-11e8-9e7f-ba0f79f0f416.png)\r\n### round 8 (0.11.0-dev.1)\r\n![image](https://user-images.githubusercontent.com/751054/46498877-e21b3800-c7db-11e8-8793-b6b375ff4204.png)\r\n\r\n\r\nJust to note:\r\nI'm running on a Galaxy S3. Creating 1000 simple components and updating a single property on every 10 of them.\r\nPolymer 1: ~1500ms\r\nPolymer 2: ~2500ms\r\nPolymer 3: ~2500ms\r\nLit 0.6: ~2800ms\r\nLit 0.11.4: ~3800ms"},"comment":{"url":"https://api.github.com/repos/Polymer/lit-html/issues/comments/440785848","html_url":"https://github.com/Polymer/lit-html/issues/536#issuecomment-440785848","issue_url":"https://api.github.com/repos/Polymer/lit-html/issues/536","id":440785848,"node_id":"MDEyOklzc3VlQ29tbWVudDQ0MDc4NTg0OA==","user":{"login":"justinfagnani","id":522948,"node_id":"MDQ6VXNlcjUyMjk0OA==","avatar_url":"https://avatars0.githubusercontent.com/u/522948?v=4","gravatar_id":"","url":"https://api.github.com/users/justinfagnani","html_url":"https://github.com/justinfagnani","followers_url":"https://api.github.com/users/justinfagnani/followers","following_url":"https://api.github.com/users/justinfagnani/following{/other_user}","gists_url":"https://api.github.com/users/justinfagnani/gists{/gist_id}","starred_url":"https://api.github.com/users/justinfagnani/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/justinfagnani/subscriptions","organizations_url":"https://api.github.com/users/justinfagnani/orgs","repos_url":"https://api.github.com/users/justinfagnani/repos","events_url":"https://api.github.com/users/justinfagnani/events{/privacy}","received_events_url":"https://api.github.com/users/justinfagnani/received_events","type":"User","site_admin":false},"created_at":"2018-11-21T19:37:47Z","updated_at":"2018-11-21T19:37:47Z","author_association":"COLLABORATOR","body":"0.12 with the new repeat() implementation looks like it solved the particular regression here. General performance is still a priority (after API stability for 1.0 at least). Going to close this now."}}
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