Firefox OS memory watch
Real-time command-line memory monitor for Firefox OS devices. Polls
pythonfor memory reports
npm install -g firewatch
Options:-p, --port Port to use -a, --address Address to use [0.0.0.0]-o, --open Open browser after starting the server [false]-v, --verbose Verbose logging [false]-a, --adb-path ADB executable [adb in $PATH]-b, --b2g-path B2G checkout () […]-p, --output-path Directory for dumping logs, profiles, memory reports, etc. [tmp folder]-d, --develop For developing on Firewatch [false]
The numbers are in
megabyte and update real-time; as fast as
b2g-info can provide numbers (lag displayed in ms).
device: b4ab7088f488 (130 ms)free (mb): 152.1cache (mb): 80.5pid app uss pss (mb)130 b2g 51.6 55.0326 Usage 11.5 13.9371 Homescreen 14.2 16.9426 Settings 15.3 18.72062 Facebook 14.4 17.6
PSS memory usage explained by eLinux.org:
USS (unique set size) is the set of pages that are unique to a process. This is the amount of memory that would be freed if the application was terminated right now.
PSS (proportional set size) is the amount of memory shared with other processes, accounted in a way that the amount is divided evenly between the processes that share it. This is memory that would not be released if the process was terminated, but is indicative of the amount that this process is "contributing" to the overall memory load.
Further reading: emilics.com.