{"action":"created","issue":{"url":"https://api.github.com/repos/omniosorg/kayak/issues/32","repository_url":"https://api.github.com/repos/omniosorg/kayak","labels_url":"https://api.github.com/repos/omniosorg/kayak/issues/32/labels{/name}","comments_url":"https://api.github.com/repos/omniosorg/kayak/issues/32/comments","events_url":"https://api.github.com/repos/omniosorg/kayak/issues/32/events","html_url":"https://github.com/omniosorg/kayak/pull/32","id":275070494,"number":32,"title":"Improve swap/dump volume configuration","user":{"login":"citrus-it","id":29426693,"avatar_url":"https://avatars3.githubusercontent.com/u/29426693?v=4","gravatar_id":"","url":"https://api.github.com/users/citrus-it","html_url":"https://github.com/citrus-it","followers_url":"https://api.github.com/users/citrus-it/followers","following_url":"https://api.github.com/users/citrus-it/following{/other_user}","gists_url":"https://api.github.com/users/citrus-it/gists{/gist_id}","starred_url":"https://api.github.com/users/citrus-it/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/citrus-it/subscriptions","organizations_url":"https://api.github.com/users/citrus-it/orgs","repos_url":"https://api.github.com/users/citrus-it/repos","events_url":"https://api.github.com/users/citrus-it/events{/privacy}","received_events_url":"https://api.github.com/users/citrus-it/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":2,"created_at":"2017-11-18T10:40:12Z","updated_at":"2017-11-18T11:29:08Z","closed_at":null,"author_association":"OWNER","pull_request":{"url":"https://api.github.com/repos/omniosorg/kayak/pulls/32","html_url":"https://github.com/omniosorg/kayak/pull/32","diff_url":"https://github.com/omniosorg/kayak/pull/32.diff","patch_url":"https://github.com/omniosorg/kayak/pull/32.patch"},"body":"* Set the volume block size to match the system page size. This tuning prevents ZFS from having to perform read-modify-write options on a larger block while the system is already low on memory.\r\n* Set the logbias=throughput and sync=always properties. Data written to the volume will be flushed immediately to disk freeing up memory as quickly as possible.\r\n* Set primarycache=metadata to avoid keeping swap data in RAM via the ARC.\r\n* Set secondarycache=none to disable L2ARC for swap.\r\n* Configure dump to include the pages from the currently running process by default.\r\n\r\nThe dump volume gets the same parameters FWIW as writes to that will be in a panic situation anyway."},"comment":{"url":"https://api.github.com/repos/omniosorg/kayak/issues/comments/345436122","html_url":"https://github.com/omniosorg/kayak/pull/32#issuecomment-345436122","issue_url":"https://api.github.com/repos/omniosorg/kayak/issues/32","id":345436122,"user":{"login":"v-a-b","id":20663552,"avatar_url":"https://avatars1.githubusercontent.com/u/20663552?v=4","gravatar_id":"","url":"https://api.github.com/users/v-a-b","html_url":"https://github.com/v-a-b","followers_url":"https://api.github.com/users/v-a-b/followers","following_url":"https://api.github.com/users/v-a-b/following{/other_user}","gists_url":"https://api.github.com/users/v-a-b/gists{/gist_id}","starred_url":"https://api.github.com/users/v-a-b/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/v-a-b/subscriptions","organizations_url":"https://api.github.com/users/v-a-b/orgs","repos_url":"https://api.github.com/users/v-a-b/repos","events_url":"https://api.github.com/users/v-a-b/events{/privacy}","received_events_url":"https://api.github.com/users/v-a-b/received_events","type":"User","site_admin":false},"created_at":"2017-11-18T11:29:08Z","updated_at":"2017-11-18T11:29:08Z","author_association":"NONE","body":"Ah, hadn't realized that.  My preference is to have compression=off in rpool so I can decide where to enable it and which type to select."}}
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