{"action":"created","issue":{"url":"https://api.github.com/repos/ArduPilot/ardupilot/issues/7060","repository_url":"https://api.github.com/repos/ArduPilot/ardupilot","labels_url":"https://api.github.com/repos/ArduPilot/ardupilot/issues/7060/labels{/name}","comments_url":"https://api.github.com/repos/ArduPilot/ardupilot/issues/7060/comments","events_url":"https://api.github.com/repos/ArduPilot/ardupilot/issues/7060/events","html_url":"https://github.com/ArduPilot/ardupilot/issues/7060","id":264223196,"number":7060,"title":"Slow loops with Copter 3.5 and 3.6 on Pixhawk 2.0 and 2.1","user":{"login":"Pedals2Paddles","id":8234496,"avatar_url":"https://avatars3.githubusercontent.com/u/8234496?v=4","gravatar_id":"","url":"https://api.github.com/users/Pedals2Paddles","html_url":"https://github.com/Pedals2Paddles","followers_url":"https://api.github.com/users/Pedals2Paddles/followers","following_url":"https://api.github.com/users/Pedals2Paddles/following{/other_user}","gists_url":"https://api.github.com/users/Pedals2Paddles/gists{/gist_id}","starred_url":"https://api.github.com/users/Pedals2Paddles/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Pedals2Paddles/subscriptions","organizations_url":"https://api.github.com/users/Pedals2Paddles/orgs","repos_url":"https://api.github.com/users/Pedals2Paddles/repos","events_url":"https://api.github.com/users/Pedals2Paddles/events{/privacy}","received_events_url":"https://api.github.com/users/Pedals2Paddles/received_events","type":"User","site_admin":false},"labels":[{"id":24269224,"url":"https://api.github.com/repos/ArduPilot/ardupilot/labels/Copter","name":"Copter","color":"02e10c","default":false}],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":8,"created_at":"2017-10-10T13:14:38Z","updated_at":"2018-03-10T00:44:30Z","closed_at":null,"author_association":"CONTRIBUTOR","body":"#### Issue details\r\nOn multiple people's Solos running AC 3.5.0+ or 3.6-dev (all unmodified, straight off the build server) on both Pixhawk 2.0 Pixhawk 2.1 autopilots, we're seeing slow loops detected by the log analyzer.  It is consistently happening to everyone that goes looking for it. The number of slow loop lines and  % varies each time though.\r\n\r\nSome examples of the slow loop reports:\r\n`Test: PM = FAIL - 31 slow loop lines found, max 55.06% on line 102351`\r\n`Test: PM = FAIL - 64 slow loop lines found, max 19.77% on line 64050`\r\n\r\nOne user reported the copter shut down twice about 2 seconds after takeoff, and the log abruptly ended prior to whatever error or incident caused it. It unknown if that's related to the slow loops or not, since the slow loops have apparently been happening for months without incident. It could just as easily have been a power issue or some unknown operator error too. But worth mentioning.\r\n\r\nAre we seeing a real problem here? Or is this something to be expected and ignored? If the latter, the log analyzer should probably be updated to not show this as a fail.  If the former...??\r\n\r\nI attached a dataflash log of a quick run up on the bench with slow sloops detected.\r\n\r\n#### Version\r\nCopter 3.5 and 3.6-dev\r\n\r\n#### Platform\r\n[  ] All\r\n[  ] AntennaTracker\r\n[X] Copter\r\n[  ] Plane\r\n[  ] Rover\r\n[  ] Submarine\r\n\r\n#### Airframe type\r\nSolo\r\n\r\n#### Hardware type\r\nPixhawk 2.0 and 2.1\r\n\r\n#### Logs\r\n\r\n[Matt's 3.6-dev slow loop.zip](https://github.com/ArduPilot/ardupilot/files/1371991/Matt.s.3.6-dev.slow.loop.zip)\r\n\r\n\r\n"},"comment":{"url":"https://api.github.com/repos/ArduPilot/ardupilot/issues/comments/371985522","html_url":"https://github.com/ArduPilot/ardupilot/issues/7060#issuecomment-371985522","issue_url":"https://api.github.com/repos/ArduPilot/ardupilot/issues/7060","id":371985522,"user":{"login":"Pedals2Paddles","id":8234496,"avatar_url":"https://avatars3.githubusercontent.com/u/8234496?v=4","gravatar_id":"","url":"https://api.github.com/users/Pedals2Paddles","html_url":"https://github.com/Pedals2Paddles","followers_url":"https://api.github.com/users/Pedals2Paddles/followers","following_url":"https://api.github.com/users/Pedals2Paddles/following{/other_user}","gists_url":"https://api.github.com/users/Pedals2Paddles/gists{/gist_id}","starred_url":"https://api.github.com/users/Pedals2Paddles/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/Pedals2Paddles/subscriptions","organizations_url":"https://api.github.com/users/Pedals2Paddles/orgs","repos_url":"https://api.github.com/users/Pedals2Paddles/repos","events_url":"https://api.github.com/users/Pedals2Paddles/events{/privacy}","received_events_url":"https://api.github.com/users/Pedals2Paddles/received_events","type":"User","site_admin":false},"created_at":"2018-03-10T00:44:30Z","updated_at":"2018-03-10T00:44:30Z","author_association":"CONTRIBUTOR","body":"Not sure what discussion you mean?"}}
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