{"action":"created","issue":{"url":"https://api.github.com/repos/dotnet/corert/issues/6243","repository_url":"https://api.github.com/repos/dotnet/corert","labels_url":"https://api.github.com/repos/dotnet/corert/issues/6243/labels{/name}","comments_url":"https://api.github.com/repos/dotnet/corert/issues/6243/comments","events_url":"https://api.github.com/repos/dotnet/corert/issues/6243/events","html_url":"https://github.com/dotnet/corert/issues/6243","id":352463634,"node_id":"MDU6SXNzdWUzNTI0NjM2MzQ=","number":6243,"title":"Performance regression","user":{"login":"benaadams","id":1142958,"node_id":"MDQ6VXNlcjExNDI5NTg=","avatar_url":"https://avatars1.githubusercontent.com/u/1142958?v=4","gravatar_id":"","url":"https://api.github.com/users/benaadams","html_url":"https://github.com/benaadams","followers_url":"https://api.github.com/users/benaadams/followers","following_url":"https://api.github.com/users/benaadams/following{/other_user}","gists_url":"https://api.github.com/users/benaadams/gists{/gist_id}","starred_url":"https://api.github.com/users/benaadams/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/benaadams/subscriptions","organizations_url":"https://api.github.com/users/benaadams/orgs","repos_url":"https://api.github.com/users/benaadams/repos","events_url":"https://api.github.com/users/benaadams/events{/privacy}","received_events_url":"https://api.github.com/users/benaadams/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":11,"created_at":"2018-08-21T09:44:37Z","updated_at":"2018-12-04T15:11:22Z","closed_at":null,"author_association":"CONTRIBUTOR","body":"Last 2 CI runs on TE (https://tfb-status.techempower.com/) have had a performance regression for corert:\r\n\r\n![image](https://user-images.githubusercontent.com/1142958/44394143-66687300-a52e-11e8-924a-2c25887639d9.png)\r\n\r\n3.\r\n\r\n![image](https://user-images.githubusercontent.com/1142958/44394006-083b9000-a52e-11e8-8267-f3ab390d514a.png)\r\n\r\n2.\r\n\r\n![image](https://user-images.githubusercontent.com/1142958/44394232-a3346a00-a52e-11e8-935f-6f1c93ca69e1.png)\r\n\r\n1.\r\n\r\n![image](https://user-images.githubusercontent.com/1142958/44394284-bb0bee00-a52e-11e8-961f-82393289ed7e.png)\r\n\r\n\r\nReferences package\r\n```xml\r\n<PackageReference Include=\"Microsoft.DotNet.ILCompiler\" Version=\"1.0.0-alpha-*\" />\r\n```\r\n\r\nProject source https://github.com/TechEmpower/FrameworkBenchmarks/tree/master/frameworks/CSharp/aspnetcore-corert/PlatformBenchmarks\r\n\r\nAlso have increased error rate, which might be related?"},"comment":{"url":"https://api.github.com/repos/dotnet/corert/issues/comments/444134253","html_url":"https://github.com/dotnet/corert/issues/6243#issuecomment-444134253","issue_url":"https://api.github.com/repos/dotnet/corert/issues/6243","id":444134253,"node_id":"MDEyOklzc3VlQ29tbWVudDQ0NDEzNDI1Mw==","user":{"login":"MichalStrehovsky","id":13110571,"node_id":"MDQ6VXNlcjEzMTEwNTcx","avatar_url":"https://avatars0.githubusercontent.com/u/13110571?v=4","gravatar_id":"","url":"https://api.github.com/users/MichalStrehovsky","html_url":"https://github.com/MichalStrehovsky","followers_url":"https://api.github.com/users/MichalStrehovsky/followers","following_url":"https://api.github.com/users/MichalStrehovsky/following{/other_user}","gists_url":"https://api.github.com/users/MichalStrehovsky/gists{/gist_id}","starred_url":"https://api.github.com/users/MichalStrehovsky/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/MichalStrehovsky/subscriptions","organizations_url":"https://api.github.com/users/MichalStrehovsky/orgs","repos_url":"https://api.github.com/users/MichalStrehovsky/repos","events_url":"https://api.github.com/users/MichalStrehovsky/events{/privacy}","received_events_url":"https://api.github.com/users/MichalStrehovsky/received_events","type":"User","site_admin":false},"created_at":"2018-12-04T15:11:22Z","updated_at":"2018-12-04T15:11:22Z","author_association":"MEMBER","body":"![techempower](https://user-images.githubusercontent.com/13110571/49451034-98040200-f7de-11e8-998e-259127f8cb0d.PNG)\r\n\r\nStarting to look better. I saw we are spending a bunch of time in RhSpinWait and Jan pointed me towards some fixes on the CoreCLR side that were specifically done to fix spinning on Skylake machines (that Techempower uses). Catching up with CoreCLR might be down to porting those fixes."}}
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