{"action":"created","issue":{"url":"https://api.github.com/repos/firehol/netdata/issues/1076","repository_url":"https://api.github.com/repos/firehol/netdata","labels_url":"https://api.github.com/repos/firehol/netdata/issues/1076/labels{/name}","comments_url":"https://api.github.com/repos/firehol/netdata/issues/1076/comments","events_url":"https://api.github.com/repos/firehol/netdata/issues/1076/events","html_url":"https://github.com/firehol/netdata/issues/1076","id":181257909,"number":1076,"title":"Alarm \"system.softnet_stat\" is very strict.","user":{"login":"lukasmalkmus","id":9931588,"avatar_url":"https://avatars0.githubusercontent.com/u/9931588?v=4","gravatar_id":"","url":"https://api.github.com/users/lukasmalkmus","html_url":"https://github.com/lukasmalkmus","followers_url":"https://api.github.com/users/lukasmalkmus/followers","following_url":"https://api.github.com/users/lukasmalkmus/following{/other_user}","gists_url":"https://api.github.com/users/lukasmalkmus/gists{/gist_id}","starred_url":"https://api.github.com/users/lukasmalkmus/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/lukasmalkmus/subscriptions","organizations_url":"https://api.github.com/users/lukasmalkmus/orgs","repos_url":"https://api.github.com/users/lukasmalkmus/repos","events_url":"https://api.github.com/users/lukasmalkmus/events{/privacy}","received_events_url":"https://api.github.com/users/lukasmalkmus/received_events","type":"User","site_admin":false},"labels":[{"id":43793262,"url":"https://api.github.com/repos/firehol/netdata/labels/enhancement","name":"enhancement","color":"84b6eb","default":true},{"id":305176033,"url":"https://api.github.com/repos/firehol/netdata/labels/fixed","name":"fixed","color":"009800","default":false}],"state":"closed","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":35,"created_at":"2016-10-05T20:30:59Z","updated_at":"2018-02-25T20:27:32Z","closed_at":"2016-10-23T19:20:38Z","author_association":"CONTRIBUTOR","body":"I find myself in the situation that I get the `system.softnet_stat` alarm most of the time. Here is a reminder what I'm talking about:\n![unbenannt](https://cloud.githubusercontent.com/assets/9931588/19129742/b5b1aff0-8b48-11e6-8fe9-a9a7f1bcc379.PNG)\n\nSo at first I thought I might have a serious issue with my server, but after reading the [Red Head guide](https://access.redhat.com/sites/default/files/attachments/20150325_network_performance_tuning.pdf) linked on the dashboard I think the alarm is just \"to strict\". In the guide on page nine it says:\n\n> This value can be doubled if the 3rd column in `/proc/net/softnet_stat` is increasing, which indicates that the SoftIRQ did not get enough CPU time. Small increments are normal and do not require tuning.\n\nOn my two core server `cat /proc/net/softnet_stat` looks like this:\n\n```\n000008c5 00000000 00000006 00000000 00000000 00000000 00000000 00000000 00000000 00000000\n0000acd2 00000000 00000006 00000000 00000000 00000000 00000000 00000000 00000000 00000000\n```\n\nLets take a look at the graph:\n![unbenannt1](https://cloud.githubusercontent.com/assets/9931588/19130236/a3c40142-8b4a-11e6-962f-e33b98368fe5.PNG)\n\nMost of the time, the blue `squeezed` line is `0` and I have never seen a dropped package. Lets zoom in a bit:\n![unbenannt2](https://cloud.githubusercontent.com/assets/9931588/19130357/1fd3b82c-8b4b-11e6-936a-96b69d1535d2.PNG)\n\nAh there it is: `squeezed=0,001` :)\n\nMaybe the alarm should only count when the squeezed value is bigger than `1`.\n"},"comment":{"url":"https://api.github.com/repos/firehol/netdata/issues/comments/368341608","html_url":"https://github.com/firehol/netdata/issues/1076#issuecomment-368341608","issue_url":"https://api.github.com/repos/firehol/netdata/issues/1076","id":368341608,"user":{"login":"ktsaou","id":2662304,"avatar_url":"https://avatars3.githubusercontent.com/u/2662304?v=4","gravatar_id":"","url":"https://api.github.com/users/ktsaou","html_url":"https://github.com/ktsaou","followers_url":"https://api.github.com/users/ktsaou/followers","following_url":"https://api.github.com/users/ktsaou/following{/other_user}","gists_url":"https://api.github.com/users/ktsaou/gists{/gist_id}","starred_url":"https://api.github.com/users/ktsaou/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ktsaou/subscriptions","organizations_url":"https://api.github.com/users/ktsaou/orgs","repos_url":"https://api.github.com/users/ktsaou/repos","events_url":"https://api.github.com/users/ktsaou/events{/privacy}","received_events_url":"https://api.github.com/users/ktsaou/received_events","type":"User","site_admin":false},"created_at":"2018-02-25T20:27:32Z","updated_at":"2018-02-25T20:27:32Z","author_association":"OWNER","body":"And it seems that before 4.12 this time was hardcoded to 2 jiffies..."}}
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