### Summary https://gitlab.com/gitlab-org/gitlab-ce/blob/master/app/views/admin/system_info/show.html.haml#L20 results in different value than % memory usage command shown at https://docs.gitlab.com/ee/administration/monitoring/prometheus/#viewing-performance-metrics. Originally mentioned at https://gitlab.com/gitlab-org/gitlab-ce/commit/085e1f89f327ad4d679696fe4673d09e1840b236#note_84021481. ### What is the current *bug* behavior? Admin panel and prometheus should give different values ### What is the expected *correct* behavior? Admin panel and prometheus should give same values ### Possible fixes Same logic used for both. Additionally both may be wrong as other places say to use `(1 - ((node_memory_MemFree + node_memory_Buffers + node_memory_Cached) / node_memory_MemTotal)) * 100` /cc @smcgivern