Package Exports

firewatch

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (firewatch) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

Firewatch

Real-time command-line memory monitor for Firefox OS devices. Polls b2g-info via adb shell.

Dependencies

node and npm
adb in $path
A Firefox OS device with 1.1+

Installation

npm install -g firewatch

Usage

firewatch

Output

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):  152.1
cache (mb): 80.5
pid    app             uss      pss (mb)
130    b2g             51.6     55.0
326    Usage           11.5     13.9
371    Homescreen      14.2     16.9
426    Settings        15.3     18.7
2062   Facebook        14.4     17.6

USS/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.

Local Setup

Checkout project
npm install
node index.js

Roadmap

App memory history
Keep killed apps
Show min/max and avg/mean for USS/PSS
GUI & graphs
about:memory details