diff --git a/README.md b/README.md
index c4d0cf1..5b97d7d 100644
--- a/README.md
+++ b/README.md
@@ -3,7 +3,7 @@
 A small tool to analyze RAM usage of large amounts of docker containers.
 
 ```
-container-stats 0.1.0
+container-stats 0.2.1
 MCOfficer <mcofficer@gmx.de>
 A small tool to analyze RAM usage of large amounts of docker containers.
 
@@ -39,69 +39,105 @@ $ cargo build [--release]
 List all containers:
 ```
 $ sudo ./container-stats 
-+----------+--------+----------------------------------------------------------+------------------------------------------------------------------+
-|  memory  |  pid   |                           name                           |                                id                                |
-+----------+--------+----------------------------------------------------------+------------------------------------------------------------------+
-|  4.4 GB  | 149498 |                    /sample-container-1                   | 2b13f54b6493cb396ae5122a343053a84a2af5aab1c79eb2f5a58b6a9bb234ca |
-+----------+--------+----------------------------------------------------------+------------------------------------------------------------------+
-|  4.8 GB  | 60271  |         /some-slightly-longer-sample-container           | 3dd1f8261c053f9ee5908033bd8798a60120e8e0423c74d83bd8dceda22bd157 |
-+----------+--------+----------------------------------------------------------+------------------------------------------------------------------+
-|  3.5 GB  | 28350  |                    /sample-container-2                   | 245c06ad91274c40a7f4e0090d5f74112b74818a4d237b5485962f142e74ac1c |
-+----------+--------+----------------------------------------------------------+------------------------------------------------------------------+
-|  3.9 GB  | 73631  |      /some-pretty-damn-long-sample-container-name        | 61f2cb9dc16d047f42152dde98c00e5a9f9e2a8ba305adfbf38252af3586e07a |
-+----------+--------+----------------------------------------------------------+------------------------------------------------------------------+
-| 17.2 GB  | 195327 |                  /sample-container-three                 | 1b05272735bf083e1b148169130f620505dbc2fcff3c4fc6f8f46e49a4efa676 |
-+----------+--------+----------------------------------------------------------+------------------------------------------------------------------+
-```
-
-Same, but machine-readable:
-```
-$ sudo ./container-stats --json
++----------+---------------------+----------------------------------------------------------+------------------------------------------------------------------+
+|  memory  | average_percent_cpu |                           name                           |                                id                                |
++----------+---------------------+----------------------------------------------------------+------------------------------------------------------------------+
+|  4.4 GB  |     0.054178316     |                    /sample-container-1                   | 2b13f54b6493cb396ae5122a343053a84a2af5aab1c79eb2f5a58b6a9bb234ca |
++----------+---------------------+----------------------------------------------------------+------------------------------------------------------------------+
+|  4.8 GB  |     0.001549211     |         /some-slightly-longer-sample-container           | 3dd1f8261c053f9ee5908033bd8798a60120e8e0423c74d83bd8dceda22bd157 |
++----------+---------------------+----------------------------------------------------------+------------------------------------------------------------------+
+|  3.5 GB  |     0.705093403     |                    /sample-container-2                   | 245c06ad91274c40a7f4e0090d5f74112b74818a4d237b5485962f142e74ac1c |
++----------+---------------------+----------------------------------------------------------+------------------------------------------------------------------+
+|  3.9 GB  |     3.454540209     |      /some-pretty-damn-long-sample-container-name        | 61f2cb9dc16d047f42152dde98c00e5a9f9e2a8ba305adfbf38252af3586e07a |
++----------+---------------------+----------------------------------------------------------+------------------------------------------------------------------+
+| 17.2 GB  |     1.430940032     |                  /sample-container-three                 | 1b05272735bf083e1b148169130f620505dbc2fcff3c4fc6f8f46e49a4efa676 |
++----------+---------------------+----------------------------------------------------------+------------------------------------------------------------------+
+```
+
+---
+
+The containers on my machine as i write this:
+```
+$ sudo ./container-stats
++----------+---------------------+-----------------+------------------------------------------------------------------+
+|  memory  | average_percent_cpu |      name       |                                id                                |
++----------+---------------------+-----------------+------------------------------------------------------------------+
+|  7.5 MB  |     0.007575758     | /cranky_perlman | 319e4cebf66e3c90e8eed555242f6628fbb6888e862435e4e9be0fd05a5e4c2e |
++----------+---------------------+-----------------+------------------------------------------------------------------+
+| 128.8 MB |    0.0152870985     |   /portainer    | 60c914b19bf7d81019d5f3bb28b201297ead82be87b14d96c259c23612d0d515 |
++----------+---------------------+-----------------+------------------------------------------------------------------+
+```
+
+... but one of them is secretly a CPU hog! *(`--top` checks all processes in the container, but is also much slower)*
+```
+$ sudo ./container-stats --top
++----------+---------------------+-----------------+------------------------------------------------------------------+
+|  memory  | average_percent_cpu |      name       |                                id                                |
++----------+---------------------+-----------------+------------------------------------------------------------------+
+| 22.5 MB  |      199.53616      | /cranky_perlman | 319e4cebf66e3c90e8eed555242f6628fbb6888e862435e4e9be0fd05a5e4c2e |
++----------+---------------------+-----------------+------------------------------------------------------------------+
+| 128.8 MB |     0.015279379     |   /portainer    | 60c914b19bf7d81019d5f3bb28b201297ead82be87b14d96c259c23612d0d515 |
++----------+---------------------+-----------------+------------------------------------------------------------------+
+```
+
+And in case you want to further process it with a script:
+```
+$ sudo ./container-stats --top --json
 [
   {
-    "memory": 128278528,
+    "memory": 22499328,
+    "average_percent_cpu": 199.51184,
+    "name": "/cranky_perlman",
+    "id": "319e4cebf66e3c90e8eed555242f6628fbb6888e862435e4e9be0fd05a5e4c2e"
+  },
+  {
+    "memory": 128811008,
+    "average_percent_cpu": 0.015256125,
     "name": "/portainer",
-    "id": "60c914b19bf7d6101975f39928b201297ead82be87b14d96c259c23612d0d515"
+    "id": "60c914b19bf7d81019d5f3bb28b201297ead82be87b14d96c259c23612d0d515"
   }
 ]
 ```
 
-Show the RSS usage of all containers, combined
-```
-$ sudo ./container-stats -m rss -t
-Total: 114.3 GB (114328526848 B)
-```
-(To learn about the difference between RSS and VSZ, see https://stackoverflow.com/questions/7880784)
-
+---
 
-The total memory usage of all containers starting with `/sample-`:
+The total VSZ usage of all containers starting with `/sample-`:
 ```
 $ sudo ./container-stats -t -r "^/sample-"
 Total: 106.4 GB (106439839744 B)
 ```
 
+Show the RSS usage of all containers, combined:
+```
+$ sudo ./container-stats -m rss -t
+Total: 114.3 GB (114328526848 B)
+```
+*(To learn about the difference between RSS and VSZ, see https://stackoverflow.com/questions/7880784)*
+
+---
+
 All containers, grouped by their prefixes, sorted by memory usage:
 ```
 $ sudo ./container-stats --group-by-prefix -s
-+----------+------------+-------------+
-|  memory  | containers |     fix     |
-+----------+------------+-------------+
-| 239.3 GB |     18     |   /fatfix   |
-+----------+------------+-------------+
-| 133.1 GB |     10     |  /prefix1   |
-+----------+------------+-------------+
-| 106.4 GB |     24     |  /prefix2   |
-+----------+------------+-------------+
-| 88.3 GB  |     7      |    /fix     |
-+----------+------------+-------------+
-| 35.8 GB  |     10     |   /boring   |
-+----------+------------+-------------+
-| 26.1 GB  |     6      |   /foofix   |
-+----------+------------+-------------+
-| 14.7 GB  |     4      |   /barfix   |
-+----------+------------+-------------+
-| 11.3 GB  |     3      |  /prefix4   |
-+----------+------------+-------------+
-| 127.9 MB |     1      |    /tiny    |
-+----------+------------+-------------+
++----------+---------------------+------------+------------+
+|  memory  | average_percent_cpu | containers |    fix     |
++----------+---------------------+------------+------------+
+| 239.3 GB |      2.685421       |     37     |   /fatfix  |
++----------+---------------------+------------+------------+
+| 133.1 GB |      18.31371       |     10     |  /prefix1  |
++----------+---------------------+------------+------------+
+| 106.4 GB |      17.382954      |     11     |  /prefix2  |
++----------+---------------------+------------+------------+
+| 88.3 GB |      6.465111       |     12     |    /fix    |
++----------+---------------------+------------+------------+
+| 14.8 GB  |      2.9222221      |     4      |  /boring   |
++----------+---------------------+------------+------------+
+| 11.3 GB  |      1.2392704      |     12     |  /foofix   |
++----------+---------------------+------------+------------+
+| 10.6 GB  |      3.7951217      |     5      |  /barfix   |
++----------+---------------------+------------+------------+
+|  4.3 GB  |      4.833365       |     4      |  /prefix3  |
++----------+---------------------+------------+------------+
+| 128.2 MB |     0.019668292     |     1      |  /tinyfix  |
++----------+---------------------+------------+------------+
 ```