update readme.md

README.md

@@ -22,7 +22,7 @@
 ## Install
 * add config.json (can copy from config_sample.json) 
 
-```js
+```
 {
   "portFrom":1337, //the port of the first app will be started from 1337 
   "maxInstances":100, //maxiumum number of parse apps (<100 is suggested)  
@@ -60,7 +60,7 @@
 ```
 newInstance will auto start several processes by using pm2.
  If successfully, you will see
-```sh
+```
 This is firstly start parse dashboard, admin is created.
 ---------------------------------------------------------
 dashboard URL: https://app.xxx.com:4040
@@ -90,6 +90,40 @@ we use pm2 watch method to monitor the change of cloud code folder, therefore,
 Each app developer can deploy their cloud code by using git server(not include here).
 * set load balance or dns server to your own domain, then enjoy!
 
+## Important PM2 Script File
+* initial.json - route-proxy and parse-dashboard
+* appServers.json - all parse apps
+
+There are two processes in inital.json, one is route-proxy, the other is parse-dashboard,
+to start/stop/kill these two processes, 
+```
+pm2 start/stop/kill initial.json
+```
+appServers.json contains all parse apps processes, To start/stop/kill all parse apps, 
+```
+pm2 start/stop/kill appServers.json
+```
+
+## Performance 
+### pm2 status at a glance
+```
+┌─────────────────┬────┬──────┬───────┬────────┬─────────┬────────┬─────┬───────────┬─────────┬──────────┐
+│ App name        │ id │ mode │ pid   │ status │ restart │ uptime │ cpu │ mem       │ user    │ watching │
+├─────────────────┼────┼──────┼───────┼────────┼─────────┼────────┼─────┼───────────┼─────────┼──────────┤
+│ firstapp        │ 0  │ fork │ 65458 │ online │ 0       │ 52s    │ 0%  │ 73.9 MB   │ richard │ enabled  │
+│ parse-dashboard │ 2  │ fork │ 65564 │ online │ 2       │ 37s    │ 0%  │ 53.4 MB   │ richard │ disabled │
+│ parse-route     │ 1  │ fork │ 65561 │ online │ 2       │ 37s    │ 0%  │ 40.6 MB   │ richard │ disabled │
+│ secondapp       │ 3  │ fork │ 65485 │ online │ 0       │ 44s    │ 0%  │ 74.9 MB   │ richard │ enabled  │
+│ thirdapp        │ 4  │ fork │ 65533 │ online │ 0       │ 38s    │ 3%  │ 76.5 MB   │ richard │ enabled  │
+└─────────────────┴────┴──────┴───────┴────────┴─────────┴────────┴─────┴───────────┴─────────┴──────────┘
+
+```
+each app occupies around 70MB memory size when no traffic. The 4-GB ram size server can handle at least 40 low-traffic 
+parse apps.
+
+
+
+
 ## Clean environment
 if you are in development stage, and need to have a clean environment. 
 previous generated apps are not needed anymore. you can do