dennard
v0.2.0
Published
Tiny Node cli tool to see a local app's memory footprint, cross-platform
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Dennard
A tiny 0-dependencies cross-platform Node.js module that shows the memory footprint for applications. Named after Robert Dennard, inventor of DRAM.
Installation
npm i -g dennardUsage
dennard name-of-app [-w|--watch]dennard will wildcard-match all processes with the given name.
:warning: On macOS, the tool needs to run as sudo. Internally, this module
calls footprint, which requires sudo privileges.
dennard Chrome
┌──────────────────────────────┬───────────┬───────────────┐
│ name │ pid │ megabytes │
├──────────────────────────────┼───────────┼───────────────┤
│ Google Chrome Helper │ 22801 │ 359.97 │
│ Google Chrome │ 21721 │ 260.6 │
│ Google Chrome Helper │ 21725 │ 242.6 │
│ Google Chrome Helper │ 21730 │ 151.89 │
│ Google Chrome Helper │ 36459 │ 130.96 │
│ Google Chrome Helper │ 21739 │ 96.16 │
│ Google Chrome Helper │ 21737 │ 75.79 │
│ Google Chrome Helper │ 21746 │ 62.71 │
│ Google Chrome Helper │ 21740 │ 56.5 │
│ Google Chrome Helper │ 36125 │ 44.46 │
│ Google Chrome Helper │ 21736 │ 37.01 │
│ Google Chrome Helper │ 21738 │ 28.68 │
│ Google Chrome Helper │ 57516 │ 22.93 │
│ crashpad_handler │ 21723 │ 1.59 │
│ AlertNotificationService │ 21728 │ 1.16 │
└──────────────────────────────┴───────────┴───────────────┘
Total memory footprint: 1469.1MBMemory Information
On Windows, dennard returns the size of the "working set".
The working set consists of the pages of memory that were recently referenced
by the process.
On macOS and Linux, dennard`` gathers the sum of dirty/anonymous allocations
in one or more processes along with their attributable kernel resources
(KPRVT). Shared allocations only contribute to the footprint once, regardless of
the number of times that they are mapped into any number of processes. The goal
is for the resulting number to be as close as possible to what the macOS
Activity Monitorreports asMemory` usage.
License
MIT, please see LICENSE for details