vrr/ntopng
2
0
Fork 0
mirror of https://github.com/ntop/ntopng.git synced 2026-05-03 09:20:10 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

Implements CPU states estimator as a system user script

Browse source
This commit is contained in:
Simone Mainardi 2020-02-26 19:44:24 +01:00
parent 7b6ce10940
commit 91ad5f05cd
1 changed files with 51 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

51
scripts/plugins/disk_monitor/user_scripts/system/disk_monitor.lua
View file

@ -6,6 +6,7 @@ local ts_utils = require("ts_utils_core")
local user_scripts = require("user_scripts")
local ts_utils = require("ts_utils_core")
local storage_utils = require("storage_utils")
local alerts_api = require("alerts_api")
local script = {
-- Script category
@ -37,4 +38,54 @@ end
-- ##############################################
-- Computes the CPU states in percentage
function script.hooks.min(params)
if not ntop.isWindows() then
local f = io.open("/proc/stat", "r")
local res
if f then
-- The first line of the file contains cpu jiffies
-- See http://man7.org/linux/man-pages/man5/proc.5.html for the meaning of each column
local cpu = f:read("*line")
if not isEmptyString(cpu) then
-- Parse the cpu string using an sscanf-like pattern
local user, nice, system, idle, iowait, irq, softirq, steal, guest, guest_nice = cpu:match("cpu%s+(%d+)%s+(%d+)%s+(%d+)%s+(%d+)%s+(%d+)%s+(%d+)%s+(%d+)%s+(%d+)%s+(%d+)%s+(%d+)")
local states = {user = user, nice = nice, system = system, idle = idle, iowait = iowait, softirq = softirq, steal = steal, guest = guest, guest_nice = guest_nice}
-- Compute the deltas with reference to the previous values
local delta_total = 0
local delta_states = {}
for state, state_total in pairs(states) do
local delta = alerts_api.interface_delta_val(script.key..state, params.granularity, state_total or 0)
delta_states[state] = delta
delta_total = delta_total + delta
end
-- Compute the deltas in percent
local delta_total_pct = 0
local delta_states_pct = {}
for state, state_delta in pairs(delta_states) do
local delta_pct = state_delta / delta_total * 100
delta_states_pct[state] = delta_pct
delta_total_pct = delta_total_pct + delta_pct
end
-- tprint(cpu)
-- tprint(states)
-- tprint(delta_states)
-- tprint(delta_states_pct)
-- tprint(delta_total_pct)
-- Cache the cpu value so it can be re-read during next call
end
f:close()
end
end
end
-- ##############################################
return(script)