{"action":"created","issue":{"url":"https://api.github.com/repos/wiredtiger/wiredtiger/issues/2120","labels_url":"https://api.github.com/repos/wiredtiger/wiredtiger/issues/2120/labels{/name}","comments_url":"https://api.github.com/repos/wiredtiger/wiredtiger/issues/2120/comments","events_url":"https://api.github.com/repos/wiredtiger/wiredtiger/issues/2120/events","html_url":"https://github.com/wiredtiger/wiredtiger/pull/2120","id":100943968,"number":2120,"title":"WT-2038 Discard checkpoint lock handles asap","user":{"login":"michaelcahill","id":1264383,"avatar_url":"https://avatars.githubusercontent.com/u/1264383?v=3","gravatar_id":"","url":"https://api.github.com/users/michaelcahill","html_url":"https://github.com/michaelcahill","followers_url":"https://api.github.com/users/michaelcahill/followers","following_url":"https://api.github.com/users/michaelcahill/following{/other_user}","gists_url":"https://api.github.com/users/michaelcahill/gists{/gist_id}","starred_url":"https://api.github.com/users/michaelcahill/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/michaelcahill/subscriptions","organizations_url":"https://api.github.com/users/michaelcahill/orgs","repos_url":"https://api.github.com/users/michaelcahill/repos","events_url":"https://api.github.com/users/michaelcahill/events{/privacy}","received_events_url":"https://api.github.com/users/michaelcahill/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":1,"created_at":"2015-08-14T06:22:30Z","updated_at":"2015-08-14T06:26:00Z","closed_at":null,"pull_request":{"url":"https://api.github.com/repos/wiredtiger/wiredtiger/pulls/2120","html_url":"https://github.com/wiredtiger/wiredtiger/pull/2120","diff_url":"https://github.com/wiredtiger/wiredtiger/pull/2120.diff","patch_url":"https://github.com/wiredtiger/wiredtiger/pull/2120.patch"},"body":""},"comment":{"url":"https://api.github.com/repos/wiredtiger/wiredtiger/issues/comments/130989637","html_url":"https://github.com/wiredtiger/wiredtiger/pull/2120#issuecomment-130989637","issue_url":"https://api.github.com/repos/wiredtiger/wiredtiger/issues/2120","id":130989637,"user":{"login":"michaelcahill","id":1264383,"avatar_url":"https://avatars.githubusercontent.com/u/1264383?v=3","gravatar_id":"","url":"https://api.github.com/users/michaelcahill","html_url":"https://github.com/michaelcahill","followers_url":"https://api.github.com/users/michaelcahill/followers","following_url":"https://api.github.com/users/michaelcahill/following{/other_user}","gists_url":"https://api.github.com/users/michaelcahill/gists{/gist_id}","starred_url":"https://api.github.com/users/michaelcahill/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/michaelcahill/subscriptions","organizations_url":"https://api.github.com/users/michaelcahill/orgs","repos_url":"https://api.github.com/users/michaelcahill/repos","events_url":"https://api.github.com/users/michaelcahill/events{/privacy}","received_events_url":"https://api.github.com/users/michaelcahill/received_events","type":"User","site_admin":false},"created_at":"2015-08-14T06:26:00Z","updated_at":"2015-08-14T06:26:00Z","body":"I ran a pretty simple workload to see what was going on.  With 1000 tables all being frequently updated, with `close_idle_time=60` and `checkpoint.wait=5`, we were seeing:\r\n\r\n![handle-count-before](https://cloud.githubusercontent.com/assets/1264383/9268316/fbabcf14-42a0-11e5-86c7-53ff5ea674cf.png)\r\n\r\n(i.e., # handles = 12x # tables).\r\n\r\nWith these changes, I see: \r\n\r\n![handle-count-after](https://cloud.githubusercontent.com/assets/1264383/9268312/f0a6975c-42a0-11e5-8e7b-6d181aa7cd3a.png)\r\n\r\n(i.e., # handles = 1-2x # tables)."}}