{"action":"opened","issue":{"url":"https://api.github.com/repos/EricssonResearch/bowser/issues/36","labels_url":"https://api.github.com/repos/EricssonResearch/bowser/issues/36/labels{/name}","comments_url":"https://api.github.com/repos/EricssonResearch/bowser/issues/36/comments","events_url":"https://api.github.com/repos/EricssonResearch/bowser/issues/36/events","html_url":"https://github.com/EricssonResearch/bowser/issues/36","id":60645401,"number":36,"title":"Performance bottleneck in image copying","user":{"login":"ijsf","id":123868,"avatar_url":"https://avatars.githubusercontent.com/u/123868?v=3","gravatar_id":"","url":"https://api.github.com/users/ijsf","html_url":"https://github.com/ijsf","followers_url":"https://api.github.com/users/ijsf/followers","following_url":"https://api.github.com/users/ijsf/following{/other_user}","gists_url":"https://api.github.com/users/ijsf/gists{/gist_id}","starred_url":"https://api.github.com/users/ijsf/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ijsf/subscriptions","organizations_url":"https://api.github.com/users/ijsf/orgs","repos_url":"https://api.github.com/users/ijsf/repos","events_url":"https://api.github.com/users/ijsf/events{/privacy}","received_events_url":"https://api.github.com/users/ijsf/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":0,"created_at":"2015-03-11T11:35:44Z","updated_at":"2015-03-11T11:35:44Z","closed_at":null,"body":"I've been testing OpenWebRTC in combination with Bowser on an iPad Mini Gen 1 (armv7), and noticed that image buffer copying/moving takes up a significant portion of time on this particular device.\r\n\r\nWhen profiling with Time Analyzer, a `_platform_memmove` call that originates from WebCore seems to take up at least 12% of CPU when displaying local video on demo.openwebrtc.io:38080 (not calling), and this only gets worse once a call is initiated.\r\n\r\nI'm not quite sure why this bottleneck is appearing for local video, as the video screen is very small in comparison to the window size. Can anybody shine some light on this?"}}