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With more testing, it has become clear that moving from 6 to 9 severely hurt perf in some scenarios so it's being reverted back to 6.\r\n\r\nresolves #4475\r\n\r\n@stephentoub @eerhardt @bjjones \r\n\r\nPerf results coming in subsequent comments."},"comment":{"url":"https://api.github.com/repos/dotnet/corefx/issues/comments/172059072","html_url":"https://github.com/dotnet/corefx/pull/5458#issuecomment-172059072","issue_url":"https://api.github.com/repos/dotnet/corefx/issues/5458","id":172059072,"user":{"login":"stephentoub","id":2642209,"avatar_url":"https://avatars.githubusercontent.com/u/2642209?v=3","gravatar_id":"","url":"https://api.github.com/users/stephentoub","html_url":"https://github.com/stephentoub","followers_url":"https://api.github.com/users/stephentoub/followers","following_url":"https://api.github.com/users/stephentoub/following{/other_user}","gists_url":"https://api.github.com/users/stephentoub/gists{/gist_id}","starred_url":"https://api.github.com/users/stephentoub/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/stephentoub/subscriptions","organizations_url":"https://api.github.com/users/stephentoub/orgs","repos_url":"https://api.github.com/users/stephentoub/repos","events_url":"https://api.github.com/users/stephentoub/events{/privacy}","received_events_url":"https://api.github.com/users/stephentoub/received_events","type":"User","site_admin":false},"created_at":"2016-01-15T19:21:37Z","updated_at":"2016-01-15T19:21:37Z","body":"@ianhays, what about size differences?"}}