diff --git a/public/config-awesome-4-rc.lua b/public/config-awesome-4-rc.lua
index 76c9db9..d62b520 100644
--- a/public/config-awesome-4-rc.lua
+++ b/public/config-awesome-4-rc.lua
@@ -225,6 +225,65 @@ local function set_wallpaper(s)
     end
 end
 
+
+local iostat_tooltiptext = ""
+-- Widget de monitoring de l'activité des disques https://awesomewm.org/recipes/watch/
+-- disk I/O using iostat from sysstat utilities
+local iotable = {}
+local iostat = awful.widget.watch("iostat -dm -y -z 1 1", 2, -- in Kb, use -dm for Mb
+    function(widget, stdout)
+        for line in stdout:match("(sd.*)\n"):gmatch("(.-)\n") do
+            local device, tps, read_s, wrtn_s, read, wrtn =
+            line:match("(%w+)%s*(%d+,?%d*)%s*(%d+,?%d*)%s*(%d+,?%d*)%s*(%d+,?%d*)%s*(%d+,?%d*)")
+            --                  [1]  [2]     [3]     [4]   [5]
+            iotable[device] = { tps, read_s, wrtn_s, read, wrtn }
+        end
+
+        local label = ""
+        for device,values in spairs(iotable) do
+          label = label..(device..": "..iotable[device][2].." MB_read/s  |"..iotable[device][3].." MB_wrtn/s").."\n"
+        end
+        iostat_tooltiptext = label
+
+        -- customize here
+        --widget:set_text("sda: "..iotable["sda"][2].."/"..iotable["sda"][3]) -- read_s/wrtn_s
+        widget:set_text("iostat")
+
+        widget_t = awful.tooltip({
+         --objects = {  },
+         timer_function = function()
+                 return iostat_tooltiptext
+             end,
+         })
+
+         widget_t:add_to_object(widget)
+    end
+)
+
+-- tris d'un tableau par la clef https://stackoverflow.com/questions/15706270/sort-a-table-in-lua
+function spairs(t, order)
+    -- collect the keys
+    local keys = {}
+    for k in pairs(t) do keys[#keys+1] = k end
+
+    -- if order function given, sort by it by passing the table and keys a, b,
+    -- otherwise just sort the keys
+    if order then
+        table.sort(keys, function(a,b) return order(t, a, b) end)
+    else
+        table.sort(keys)
+    end
+
+    -- return the iterator function
+    local i = 0
+    return function()
+        i = i + 1
+        if keys[i] then
+            return keys[i], t[keys[i]]
+        end
+    end
+end
+
 -- Re-set wallpaper when a screen's geometry changes (e.g. different resolution)
 screen.connect_signal("property::geometry", set_wallpaper)
 
@@ -268,6 +327,9 @@ awful.screen.connect_for_each_screen(
             s.mytasklist, -- Middle widget
             { -- Right widgets
               layout = wibox.layout.fixed.horizontal,
+              wibox.widget.textbox(' | '),
+              iostat,
+              wibox.widget.textbox(' | '),
               mykeyboardlayout,
               wibox.widget.systray(),
               mytextclock,