{"action":"created","issue":{"url":"https://api.github.com/repos/DennisWithDai/linux-kernel/issues/4","repository_url":"https://api.github.com/repos/DennisWithDai/linux-kernel","labels_url":"https://api.github.com/repos/DennisWithDai/linux-kernel/issues/4/labels{/name}","comments_url":"https://api.github.com/repos/DennisWithDai/linux-kernel/issues/4/comments","events_url":"https://api.github.com/repos/DennisWithDai/linux-kernel/issues/4/events","html_url":"https://github.com/DennisWithDai/linux-kernel/issues/4","id":220475585,"number":4,"title":"How to use oprofile to test the preformance of linux system?","user":{"login":"DennisWithDai","id":27139423,"avatar_url":"https://avatars3.githubusercontent.com/u/27139423?v=3","gravatar_id":"","url":"https://api.github.com/users/DennisWithDai","html_url":"https://github.com/DennisWithDai","followers_url":"https://api.github.com/users/DennisWithDai/followers","following_url":"https://api.github.com/users/DennisWithDai/following{/other_user}","gists_url":"https://api.github.com/users/DennisWithDai/gists{/gist_id}","starred_url":"https://api.github.com/users/DennisWithDai/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/DennisWithDai/subscriptions","organizations_url":"https://api.github.com/users/DennisWithDai/orgs","repos_url":"https://api.github.com/users/DennisWithDai/repos","events_url":"https://api.github.com/users/DennisWithDai/events{/privacy}","received_events_url":"https://api.github.com/users/DennisWithDai/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":0,"created_at":"2017-04-09T14:44:13Z","updated_at":"2017-04-09T14:56:13Z","closed_at":null,"body":"We need to test the preformance because load average seems unusual."},"comment":{"url":"https://api.github.com/repos/DennisWithDai/linux-kernel/issues/comments/292790875","html_url":"https://github.com/DennisWithDai/linux-kernel/issues/4#issuecomment-292790875","issue_url":"https://api.github.com/repos/DennisWithDai/linux-kernel/issues/4","id":292790875,"user":{"login":"DennisWithDai","id":27139423,"avatar_url":"https://avatars3.githubusercontent.com/u/27139423?v=3","gravatar_id":"","url":"https://api.github.com/users/DennisWithDai","html_url":"https://github.com/DennisWithDai","followers_url":"https://api.github.com/users/DennisWithDai/followers","following_url":"https://api.github.com/users/DennisWithDai/following{/other_user}","gists_url":"https://api.github.com/users/DennisWithDai/gists{/gist_id}","starred_url":"https://api.github.com/users/DennisWithDai/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/DennisWithDai/subscriptions","organizations_url":"https://api.github.com/users/DennisWithDai/orgs","repos_url":"https://api.github.com/users/DennisWithDai/repos","events_url":"https://api.github.com/users/DennisWithDai/events{/privacy}","received_events_url":"https://api.github.com/users/DennisWithDai/received_events","type":"User","site_admin":false},"created_at":"2017-04-09T14:56:13Z","updated_at":"2017-04-09T14:56:13Z","body":"Please follow below step:\r\n1.Enable OProfile in buildroot via make menuconfig\r\n2.Enable Oprofile in linux kernel via make linux-menuconfig\r\n [*] Profiling support                                                                                                           | |  \r\n  | |                                                          <*> OProfile system profiling\r\n3.make oprofile-rebuild;make linux-rebuild;make all\r\n4. cp ./output/build/binutils-2.21/binutils/objdump and others file into /usr/bin/\r\n5. Execute below command in embedded board\r\nopcontrol --init\r\nopcontrol --vmlinux=/usr/mnt_app/vmlinux\r\nopcontrol --start\r\nopcontrol --dump\r\nopreport -l"}}
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