{"action":"created","issue":{"url":"https://api.github.com/repos/dart-lang/sdk/issues/33257","repository_url":"https://api.github.com/repos/dart-lang/sdk","labels_url":"https://api.github.com/repos/dart-lang/sdk/issues/33257/labels{/name}","comments_url":"https://api.github.com/repos/dart-lang/sdk/issues/33257/comments","events_url":"https://api.github.com/repos/dart-lang/sdk/issues/33257/events","html_url":"https://github.com/dart-lang/sdk/issues/33257","id":327092284,"node_id":"MDU6SXNzdWUzMjcwOTIyODQ=","number":33257,"title":"ensure performance of tools on Dart 2 VM is on par with Dart 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known regressions:\r\n\r\n- [ ] dart2js: around 2x regression in self compilation\r\n- [ ] build_runner: 50% regression when building build_runner's own _test, 2x regression on some individual steps\r\n- [ ] analyzer: indirectly confirmed via build_runner.\r\n\r\nMost regressions seem to boil down to the cost of strong mode type checks: with parameter checks and implicit down-casts ignored hit on dart2js goes down to 10%."},"comment":{"url":"https://api.github.com/repos/dart-lang/sdk/issues/comments/396278401","html_url":"https://github.com/dart-lang/sdk/issues/33257#issuecomment-396278401","issue_url":"https://api.github.com/repos/dart-lang/sdk/issues/33257","id":396278401,"node_id":"MDEyOklzc3VlQ29tbWVudDM5NjI3ODQwMQ==","user":{"login":"mraleph","id":131846,"node_id":"MDQ6VXNlcjEzMTg0Ng==","avatar_url":"https://avatars3.githubusercontent.com/u/131846?v=4","gravatar_id":"","url":"https://api.github.com/users/mraleph","html_url":"https://github.com/mraleph","followers_url":"https://api.github.com/users/mraleph/followers","following_url":"https://api.github.com/users/mraleph/following{/other_user}","gists_url":"https://api.github.com/users/mraleph/gists{/gist_id}","starred_url":"https://api.github.com/users/mraleph/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/mraleph/subscriptions","organizations_url":"https://api.github.com/users/mraleph/orgs","repos_url":"https://api.github.com/users/mraleph/repos","events_url":"https://api.github.com/users/mraleph/events{/privacy}","received_events_url":"https://api.github.com/users/mraleph/received_events","type":"User","site_admin":false},"created_at":"2018-06-11T15:10:57Z","updated_at":"2018-06-11T15:10:57Z","author_association":"CONTRIBUTOR","body":"@handicraftsman please elaborate on the “hmm?” - leaving such comments is not really helpful"}}
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