{"action":"created","issue":{"url":"https://api.github.com/repos/dart-lang/polymer-dart/issues/196","labels_url":"https://api.github.com/repos/dart-lang/polymer-dart/issues/196/labels{/name}","comments_url":"https://api.github.com/repos/dart-lang/polymer-dart/issues/196/comments","events_url":"https://api.github.com/repos/dart-lang/polymer-dart/issues/196/events","html_url":"https://github.com/dart-lang/polymer-dart/issues/196","id":85653010,"number":196,"title":"Polymer template repeat on table row is extremely slow","user":{"login":"DartBot","id":8958862,"avatar_url":"https://avatars.githubusercontent.com/u/8958862?v=3","gravatar_id":"","url":"https://api.github.com/users/DartBot","html_url":"https://github.com/DartBot","followers_url":"https://api.github.com/users/DartBot/followers","following_url":"https://api.github.com/users/DartBot/following{/other_user}","gists_url":"https://api.github.com/users/DartBot/gists{/gist_id}","starred_url":"https://api.github.com/users/DartBot/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/DartBot/subscriptions","organizations_url":"https://api.github.com/users/DartBot/orgs","repos_url":"https://api.github.com/users/DartBot/repos","events_url":"https://api.github.com/users/DartBot/events{/privacy}","received_events_url":"https://api.github.com/users/DartBot/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/dart-lang/polymer-dart/labels/bug","name":"bug","color":"fc2929"},{"url":"https://api.github.com/repos/dart-lang/polymer-dart/labels/PolymerMilestone-Next","name":"PolymerMilestone-Next","color":"ededed"},{"url":"https://api.github.com/repos/dart-lang/polymer-dart/labels/Priority-High","name":"Priority-High","color":"ededed"}],"state":"open","locked":false,"assignee":{"login":"jakemac53","id":984921,"avatar_url":"https://avatars.githubusercontent.com/u/984921?v=3","gravatar_id":"","url":"https://api.github.com/users/jakemac53","html_url":"https://github.com/jakemac53","followers_url":"https://api.github.com/users/jakemac53/followers","following_url":"https://api.github.com/users/jakemac53/following{/other_user}","gists_url":"https://api.github.com/users/jakemac53/gists{/gist_id}","starred_url":"https://api.github.com/users/jakemac53/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/jakemac53/subscriptions","organizations_url":"https://api.github.com/users/jakemac53/orgs","repos_url":"https://api.github.com/users/jakemac53/repos","events_url":"https://api.github.com/users/jakemac53/events{/privacy}","received_events_url":"https://api.github.com/users/jakemac53/received_events","type":"User","site_admin":false},"milestone":null,"comments":19,"created_at":"2015-06-05T23:06:12Z","updated_at":"2015-06-05T23:06:15Z","closed_at":null,"body":"<a href=\"https://github.com/johnmccutchan\"><img src=\"https://avatars.githubusercontent.com/u/224266?v=3\" align=\"left\" width=\"96\" height=\"96\"hspace=\"10\"></img></a> **Issue by [johnmccutchan](https://github.com/johnmccutchan)**\n_Originally opened as dart-lang/sdk#19064_\n\n----\n\nCompiled to JavaScript, Observatory's profiler tree expansion is extremely slow.\n\nI have a list of precomputed table cell strings and do the following in my HTML:\n\n&lt;tr template repeat=&quot;{{row in tree.rows }}&quot; style=&quot;{{}}&quot;&gt;\n&nbsp;&nbsp;&lt;td&gt;{{row.columns[0]}} ...&lt;/td&gt;\n&nbsp;&nbsp;&lt;td&gt;{{row.columns[1]}} ...&lt;/td&gt;\n&lt;/tr&gt;\n\nIt takes 50 seconds to update the display when inserting ~1,000 rows.\n\nChrome 27."},"comment":{"url":"https://api.github.com/repos/dart-lang/polymer-dart/issues/comments/109474558","html_url":"https://github.com/dart-lang/polymer-dart/issues/196#issuecomment-109474558","issue_url":"https://api.github.com/repos/dart-lang/polymer-dart/issues/196","id":109474558,"user":{"login":"DartBot","id":8958862,"avatar_url":"https://avatars.githubusercontent.com/u/8958862?v=3","gravatar_id":"","url":"https://api.github.com/users/DartBot","html_url":"https://github.com/DartBot","followers_url":"https://api.github.com/users/DartBot/followers","following_url":"https://api.github.com/users/DartBot/following{/other_user}","gists_url":"https://api.github.com/users/DartBot/gists{/gist_id}","starred_url":"https://api.github.com/users/DartBot/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/DartBot/subscriptions","organizations_url":"https://api.github.com/users/DartBot/orgs","repos_url":"https://api.github.com/users/DartBot/repos","events_url":"https://api.github.com/users/DartBot/events{/privacy}","received_events_url":"https://api.github.com/users/DartBot/received_events","type":"User","site_admin":false},"created_at":"2015-06-05T23:06:15Z","updated_at":"2015-06-05T23:06:15Z","body":"<a href=\"https://github.com/iposva-google\"><img src=\"https://avatars.githubusercontent.com/u/5449880?v=3\" align=\"left\" width=\"48\" height=\"48\"hspace=\"10\"></img></a> **Comment by [iposva-google](https://github.com/iposva-google)**\n\n----\n\nThe fixes in comment 18 were tracked by issue dart-lang/sdk#18347."}}