{"action":"created","issue":{"url":"https://api.github.com/repos/JuliaLang/julia/issues/13522","labels_url":"https://api.github.com/repos/JuliaLang/julia/issues/13522/labels{/name}","comments_url":"https://api.github.com/repos/JuliaLang/julia/issues/13522/comments","events_url":"https://api.github.com/repos/JuliaLang/julia/issues/13522/events","html_url":"https://github.com/JuliaLang/julia/issues/13522","id":110760325,"number":13522,"title":"baseline 300% CPU usage with ARMv7 binaries on quad-core AArch64 ARM","user":{"login":"schmrlng","id":4130030,"avatar_url":"https://avatars.githubusercontent.com/u/4130030?v=3","gravatar_id":"","url":"https://api.github.com/users/schmrlng","html_url":"https://github.com/schmrlng","followers_url":"https://api.github.com/users/schmrlng/followers","following_url":"https://api.github.com/users/schmrlng/following{/other_user}","gists_url":"https://api.github.com/users/schmrlng/gists{/gist_id}","starred_url":"https://api.github.com/users/schmrlng/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/schmrlng/subscriptions","organizations_url":"https://api.github.com/users/schmrlng/orgs","repos_url":"https://api.github.com/users/schmrlng/repos","events_url":"https://api.github.com/users/schmrlng/events{/privacy}","received_events_url":"https://api.github.com/users/schmrlng/received_events","type":"User","site_admin":false},"labels":[{"url":"https://api.github.com/repos/JuliaLang/julia/labels/arm","name":"arm","color":"fbca04"}],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":2,"created_at":"2015-10-10T01:51:44Z","updated_at":"2015-10-10T02:03:35Z","closed_at":null,"body":"I'm trying out the 0.4 ARM binaries linked [here](https://groups.google.com/forum/#!topic/julia-users/lEDCaBbMMKM) on a quad-core Snapdragon 600-based single-board computer (in particular, the [IFC6410P](http://www.inforcecomputing.com/products/single-board-computers/6410-plus-single-board-computer-sbc)) running Linaro. As far as I can tell, everything works great except for the fact that even when idling, julia consumes three out of four cores. See the attached screenshot for an example from the REPL; ```julia -e sleep(10)``` gives similar results. Has anyone else seen anything similar?\r\n\r\n![julia_arm_300](https://cloud.githubusercontent.com/assets/4130030/10408546/2db76172-6eb5-11e5-8705-a4ab2068e5a8.png)\r\n"},"comment":{"url":"https://api.github.com/repos/JuliaLang/julia/issues/comments/147022211","html_url":"https://github.com/JuliaLang/julia/issues/13522#issuecomment-147022211","issue_url":"https://api.github.com/repos/JuliaLang/julia/issues/13522","id":147022211,"user":{"login":"schmrlng","id":4130030,"avatar_url":"https://avatars.githubusercontent.com/u/4130030?v=3","gravatar_id":"","url":"https://api.github.com/users/schmrlng","html_url":"https://github.com/schmrlng","followers_url":"https://api.github.com/users/schmrlng/followers","following_url":"https://api.github.com/users/schmrlng/following{/other_user}","gists_url":"https://api.github.com/users/schmrlng/gists{/gist_id}","starred_url":"https://api.github.com/users/schmrlng/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/schmrlng/subscriptions","organizations_url":"https://api.github.com/users/schmrlng/orgs","repos_url":"https://api.github.com/users/schmrlng/repos","events_url":"https://api.github.com/users/schmrlng/events{/privacy}","received_events_url":"https://api.github.com/users/schmrlng/received_events","type":"User","site_admin":false},"created_at":"2015-10-10T02:03:35Z","updated_at":"2015-10-10T02:03:35Z","body":"I had those same issues trying to build a month or two ago (I patched Make.inc and then ran into similar problems), but I was hoping that the prebuilt binaries would save me. I didn't realize that those binaries are ARMv7, but in any case I don't know enough about ARM to know if that could be the underlying cause (the internet suggests that ARMv7 has some flavor of multicore support?)."}}