FireFox for Mac Consumes More RAM Than Linux


I made a test to compare RAM consumption on FireFox. It seems Mac version needs more RAM than Linux with the same sessionstore.js. Here is the detail.

Test Bed

Mac mini (Late 2012) with 16GB RAM and ThinkPad T410, T410i with 8GB RAM running OpenSuSE 13.1.

FireFox is fresh opening with the same sessionstore.js which contains 8 windows and 365 tabs and in low CPU utilization.

I use Activity Monitor in OSX and System Monitor in GNOME to check memory consumption.

Memory Consumption

As you may see below, the Mac version consumes 1.13GB of RAM while Linux is 903.5MB.

Firefox for Mac RAM Consumption by Activity Monitor in OSX.
FireFox for Mac RAM Consumption by Activity Monitor in OSX.
FireFox for Linux RAM Consumption by System Monitor in GNOME3.
FireFox for Linux RAM Consumption by System Monitor in GNOME3.

Notes

After working for while, both RAM consumption will increase. It depends on how you work with FireFox. For Linuxers, add more RAM when you move to OSX.

Reference

  1. Apple: Mac mini (Late 2012) – Technical Specifications
  2. Apple: OS X
  3. GNOME: System Monitor
  4. Lenovo: Overview – ThinkPad T410, T410i
  5. Mozilla: FireFox
  6. Mozilla: Support: FireFox: Profiles – Where Firefox stores your bookmarks, passwords and other user data
  7. OpenSuSE
  8. Wiki: Activity Monitor

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