{"action":"created","issue":{"url":"https://api.github.com/repos/openzfs/openzfs/issues/222","repository_url":"https://api.github.com/repos/openzfs/openzfs","labels_url":"https://api.github.com/repos/openzfs/openzfs/issues/222/labels{/name}","comments_url":"https://api.github.com/repos/openzfs/openzfs/issues/222/comments","events_url":"https://api.github.com/repos/openzfs/openzfs/issues/222/events","html_url":"https://github.com/openzfs/openzfs/pull/222","id":187185431,"number":222,"title":"7531 Assign correct flags to prefetch buffers","user":{"login":"benrubson","id":6764151,"avatar_url":"https://avatars.githubusercontent.com/u/6764151?v=3","gravatar_id":"","url":"https://api.github.com/users/benrubson","html_url":"https://github.com/benrubson","followers_url":"https://api.github.com/users/benrubson/followers","following_url":"https://api.github.com/users/benrubson/following{/other_user}","gists_url":"https://api.github.com/users/benrubson/gists{/gist_id}","starred_url":"https://api.github.com/users/benrubson/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/benrubson/subscriptions","organizations_url":"https://api.github.com/users/benrubson/orgs","repos_url":"https://api.github.com/users/benrubson/repos","events_url":"https://api.github.com/users/benrubson/events{/privacy}","received_events_url":"https://api.github.com/users/benrubson/received_events","type":"User","site_admin":false},"labels":[{"id":272750450,"url":"https://api.github.com/repos/openzfs/openzfs/labels/question","name":"question","color":"cc317c","default":true}],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":6,"created_at":"2016-11-03T20:46:04Z","updated_at":"2016-11-30T01:03:51Z","closed_at":null,"pull_request":{"url":"https://api.github.com/repos/openzfs/openzfs/pulls/222","html_url":"https://github.com/openzfs/openzfs/pull/222","diff_url":"https://github.com/openzfs/openzfs/pull/222.diff","patch_url":"https://github.com/openzfs/openzfs/pull/222.patch"},"body":"Hello,\r\n\r\nThis PR solves the following issue :\r\nhttps://www.illumos.org/issues/7531\r\n\r\nSome buffers that could be L2ARC eligible are not flagged such, leading to some performance impact.\r\nL2ARC flags are now correctly set, even for prefetch buffers.\r\nUser can still control whether or not prefetch buffers are L2-backed using the `l2arc_noprefetch` tunable.\r\n\r\nThank you 👍 \r\n\r\nBen"},"comment":{"url":"https://api.github.com/repos/openzfs/openzfs/issues/comments/263751317","html_url":"https://github.com/openzfs/openzfs/pull/222#issuecomment-263751317","issue_url":"https://api.github.com/repos/openzfs/openzfs/issues/222","id":263751317,"user":{"login":"ahrens","id":799124,"avatar_url":"https://avatars.githubusercontent.com/u/799124?v=3","gravatar_id":"","url":"https://api.github.com/users/ahrens","html_url":"https://github.com/ahrens","followers_url":"https://api.github.com/users/ahrens/followers","following_url":"https://api.github.com/users/ahrens/following{/other_user}","gists_url":"https://api.github.com/users/ahrens/gists{/gist_id}","starred_url":"https://api.github.com/users/ahrens/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ahrens/subscriptions","organizations_url":"https://api.github.com/users/ahrens/orgs","repos_url":"https://api.github.com/users/ahrens/repos","events_url":"https://api.github.com/users/ahrens/events{/privacy}","received_events_url":"https://api.github.com/users/ahrens/received_events","type":"User","site_admin":false},"created_at":"2016-11-30T01:03:51Z","updated_at":"2016-11-30T01:03:51Z","body":"I think from your results you are saying that sometimes we do a demand read that didn't pass ARC_FLAG_L2CACHE to arc_read().  What are those calls?"}}
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