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PR adds a first version of indexing in cacher.\r\n\r\nIt has a really significant impact on performance - __in empty 2000-node cluster, apiserver cpu usage drops by ~75%.__\r\n\r\nNot for 1.3, but we need this soon after 1.3 is done.\r\n\r\n@lavalamp @mqliang @davidopp @gmarek @kubernetes/sig-scalability "},"comment":{"url":"https://api.github.com/repos/kubernetes/kubernetes/issues/comments/231243890","html_url":"https://github.com/kubernetes/kubernetes/pull/27277#issuecomment-231243890","issue_url":"https://api.github.com/repos/kubernetes/kubernetes/issues/27277","id":231243890,"user":{"login":"xiang90","id":4479947,"avatar_url":"https://avatars.githubusercontent.com/u/4479947?v=3","gravatar_id":"","url":"https://api.github.com/users/xiang90","html_url":"https://github.com/xiang90","followers_url":"https://api.github.com/users/xiang90/followers","following_url":"https://api.github.com/users/xiang90/following{/other_user}","gists_url":"https://api.github.com/users/xiang90/gists{/gist_id}","starred_url":"https://api.github.com/users/xiang90/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/xiang90/subscriptions","organizations_url":"https://api.github.com/users/xiang90/orgs","repos_url":"https://api.github.com/users/xiang90/repos","events_url":"https://api.github.com/users/xiang90/events{/privacy}","received_events_url":"https://api.github.com/users/xiang90/received_events","type":"User","site_admin":false},"created_at":"2016-07-08T00:14:06Z","updated_at":"2016-07-08T00:14:06Z","body":"@lavalamp \r\n\r\nhttps://github.com/kubernetes/kubernetes/pull/27277#issuecomment-227462430\r\n\r\nI think the goal of this pr is not to introduce indexing system. It just introduces a quicker/efficient way to filter out events for uninterested watchers. I already suggested to change the interface to make this clear."}}
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