{"action":"created","issue":{"url":"https://api.github.com/repos/robotology/icub-support/issues/494","repository_url":"https://api.github.com/repos/robotology/icub-support","labels_url":"https://api.github.com/repos/robotology/icub-support/issues/494/labels{/name}","comments_url":"https://api.github.com/repos/robotology/icub-support/issues/494/comments","events_url":"https://api.github.com/repos/robotology/icub-support/issues/494/events","html_url":"https://github.com/robotology/icub-support/issues/494","id":238884287,"number":494,"title":"poor performance of the PC104 ATOM in network transmission","user":{"login":"reafrancesco","id":4299977,"avatar_url":"https://avatars0.githubusercontent.com/u/4299977?v=3","gravatar_id":"","url":"https://api.github.com/users/reafrancesco","html_url":"https://github.com/reafrancesco","followers_url":"https://api.github.com/users/reafrancesco/followers","following_url":"https://api.github.com/users/reafrancesco/following{/other_user}","gists_url":"https://api.github.com/users/reafrancesco/gists{/gist_id}","starred_url":"https://api.github.com/users/reafrancesco/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/reafrancesco/subscriptions","organizations_url":"https://api.github.com/users/reafrancesco/orgs","repos_url":"https://api.github.com/users/reafrancesco/repos","events_url":"https://api.github.com/users/reafrancesco/events{/privacy}","received_events_url":"https://api.github.com/users/reafrancesco/received_events","type":"User","site_admin":false},"labels":[{"id":194982520,"url":"https://api.github.com/repos/robotology/icub-support/labels/iCubGenova03%20(red)","name":"iCubGenova03 (red)","color":"e11d21","default":false}],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2017-06-27T15:08:01Z","updated_at":"2017-06-28T03:54:36Z","closed_at":null,"body":"Please **fill in the following two sections** and then **remove any comment and/or remark become unnecessary**:\r\n\r\n### Description of the failure\r\nTogether with @barbalberto I have noticed an high variability of the transmission rate of packets from a pc104 atom (talking head) and the rest of standard iCub network.\r\nWe focused on \"yarpdev --device test_grabber --width 320 --height 240\" as reference test.\r\nWhereas the test_grabber prints out the following messages\r\nRead [152] frames in 5[s], average period 33.11[ms], min 33.25[ms], max 33.44[ms]\r\nany yarpview (running on any other machine in the iCub network), once connected to the /grabber (in both tcp and udp) reports framerate that spans from ~3fps to ~30fps.\r\n\r\nAlso with IPERF we noticed that the transmission rate drops down to 500Mbit/s when the IPERF client runs on the PC104. \r\n\r\n**@allPC104ATOMusers: can you check if you have the same poor performance with IPERF**\r\n\r\nWe tried with a point to point connection and we change also the eth cable.\r\nThe pc104 atom is demanding less than 10% in this condition (measured with top).\r\n\r\nMore importantly if we boot the PC104 atom with an ubuntu 16.04 the transmission rate is normal and in both the direction (from and to PC104 atom) restores back to 900Mbit/s (desired throughput)/\r\n\r\nThis issue is related to https://github.com/robotology/yarp/issues/1232"},"comment":{"url":"https://api.github.com/repos/robotology/icub-support/issues/comments/311549852","html_url":"https://github.com/robotology/icub-support/issues/494#issuecomment-311549852","issue_url":"https://api.github.com/repos/robotology/icub-support/issues/494","id":311549852,"user":{"login":"randaz81","id":2869969,"avatar_url":"https://avatars3.githubusercontent.com/u/2869969?v=3","gravatar_id":"","url":"https://api.github.com/users/randaz81","html_url":"https://github.com/randaz81","followers_url":"https://api.github.com/users/randaz81/followers","following_url":"https://api.github.com/users/randaz81/following{/other_user}","gists_url":"https://api.github.com/users/randaz81/gists{/gist_id}","starred_url":"https://api.github.com/users/randaz81/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/randaz81/subscriptions","organizations_url":"https://api.github.com/users/randaz81/orgs","repos_url":"https://api.github.com/users/randaz81/repos","events_url":"https://api.github.com/users/randaz81/events{/privacy}","received_events_url":"https://api.github.com/users/randaz81/received_events","type":"User","site_admin":false},"created_at":"2017-06-28T03:54:36Z","updated_at":"2017-06-28T03:54:36Z","body":"> More importantly if we boot the PC104 atom with an Ubuntu 16.04 the transmission rate is normal\r\n\r\nWhich other OS are you using when the problem occurs?"}}
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