{"action":"created","issue":{"url":"https://api.github.com/repos/meteor/meteor/issues/6595","repository_url":"https://api.github.com/repos/meteor/meteor","labels_url":"https://api.github.com/repos/meteor/meteor/issues/6595/labels{/name}","comments_url":"https://api.github.com/repos/meteor/meteor/issues/6595/comments","events_url":"https://api.github.com/repos/meteor/meteor/issues/6595/events","html_url":"https://github.com/meteor/meteor/issues/6595","id":143741881,"number":6595,"title":"[1.3-rc.2] Incredible amounts of disk I/O, system completely unresponsive.","user":{"login":"trusktr","id":297678,"avatar_url":"https://avatars.githubusercontent.com/u/297678?v=3","gravatar_id":"","url":"https://api.github.com/users/trusktr","html_url":"https://github.com/trusktr","followers_url":"https://api.github.com/users/trusktr/followers","following_url":"https://api.github.com/users/trusktr/following{/other_user}","gists_url":"https://api.github.com/users/trusktr/gists{/gist_id}","starred_url":"https://api.github.com/users/trusktr/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/trusktr/subscriptions","organizations_url":"https://api.github.com/users/trusktr/orgs","repos_url":"https://api.github.com/users/trusktr/repos","events_url":"https://api.github.com/users/trusktr/events{/privacy}","received_events_url":"https://api.github.com/users/trusktr/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":3,"created_at":"2016-03-26T19:31:45Z","updated_at":"2016-05-15T13:16:21Z","closed_at":null,"body":"I'm in openSUSE, and when I save a file and a rebuild happens, the system becomes unresponsive with incredible amounts of I/O. It also happens with some other actions besides saving a file, but not sure what yet. Here's `iotop` output:\r\n\r\n![default](https://cloud.githubusercontent.com/assets/297678/14062419/3a2e4026-f35b-11e5-84e4-0bd2aa6890a2.jpg)\r\n\r\nYou can see some of the i/o is from Google Chrome, and some is Meteor. The system  becomes 100% unresponsive until it finishes doing whatever it is doing. (Pressing alt-tab to switch windows is blocked until it all clears up, etc, everything completely unresponsive).\r\n\r\nDon't know if it matters, but my filesystem is `btrfs` (default for openSUSE)."},"comment":{"url":"https://api.github.com/repos/meteor/meteor/issues/comments/219285221","html_url":"https://github.com/meteor/meteor/issues/6595#issuecomment-219285221","issue_url":"https://api.github.com/repos/meteor/meteor/issues/6595","id":219285221,"user":{"login":"anywhichway","id":4958795,"avatar_url":"https://avatars.githubusercontent.com/u/4958795?v=3","gravatar_id":"","url":"https://api.github.com/users/anywhichway","html_url":"https://github.com/anywhichway","followers_url":"https://api.github.com/users/anywhichway/followers","following_url":"https://api.github.com/users/anywhichway/following{/other_user}","gists_url":"https://api.github.com/users/anywhichway/gists{/gist_id}","starred_url":"https://api.github.com/users/anywhichway/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/anywhichway/subscriptions","organizations_url":"https://api.github.com/users/anywhichway/orgs","repos_url":"https://api.github.com/users/anywhichway/repos","events_url":"https://api.github.com/users/anywhichway/events{/privacy}","received_events_url":"https://api.github.com/users/anywhichway/received_events","type":"User","site_admin":false},"created_at":"2016-05-15T13:16:21Z","updated_at":"2016-05-15T13:16:21Z","body":"I am using v1.3 production version on Windows 10 64. I get similar behavior. Within 30 seconds of starting Meteor disk utilization goes to 97% and drops back to about 50% in about another 60 seconds. Then, as soon as I access a Meteor page using Chrome (just the intro app plus the login ui in this case) disk utilization goes up to 99% and then varys between 55% and 99% even if I close the web page. Killing the Meteor server immediately fixes the problem. The Task Manager shows that Evented I/O for V8 JavaScript (32 bit) is the issue.\r\nI am using v1.3 production version on Windows 10 64. I get similar behavior. Within 30 seconds of starting Meteor disk utilization goes to 97% and drops back to about 35% in about another 30 seconds. Then, as soon as I access a Meteor page (just the intro app plus the login ui in this case) disk utilization goes up to 99% and then varys between 55% and 99% even if I close the web page. Killing the Meteor server immediately fixes the problem. The Task Manager shows that Evented I/O for V8 JavaScript (32 bit) is the issue.\r\n\r\nI I access the same page using Firefox utilization hovers around 40%, tolerable, although still not great."}}