Bug 1388588 - Firefox writes a massive amount of data on disk
Summary: Firefox writes a massive amount of data on disk
Keywords:
Status: CLOSED UPSTREAM
Alias: None
Product: Fedora
Classification: Fedora
Component: firefox
Version: rawhide
Hardware: All
OS: All
unspecified
unspecified
Target Milestone: ---
Assignee: Martin Stransky
QA Contact: Desktop QE
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-10-25 17:41 UTC by Michal Stanke [:MikkCZ][:mstanke] (use needinfo)
Modified: 2016-11-21 09:28 UTC (History)
5 users (show)

Fixed In Version:
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Environment:
Last Closed: 2016-11-21 09:28:37 UTC
Type: Bug

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Links
System ID Private Priority Status Summary Last Updated
Mozilla Foundation 729165 0 None None None 2016-10-26 10:48:53 UTC
Mozilla Foundation 1304389 0 None None None 2016-11-21 09:28:36 UTC

Description Michal Stanke [:MikkCZ][:mstanke] (use needinfo) 2016-10-25 17:41:46 UTC 
Description of problem:
According to https://www.root.cz/clanky/firefox-pozira-vase-ssd-zapisuje-desitky-gb-denne/ and https://www.servethehome.com/firefox-is-eating-your-ssd-here-is-how-to-fix-it/ respectively, Firefox is writing a massive amount of data in the session and cookie store, which might scare SSD users. According to these sources, it can be up to 12 GB per day.

This was seen on Windows, but I was unable to reproduce on Linux, with 50 MB after 20 minutes of keeping Firefox idle (but 45 MB was written after the first 10 minutes). Can we verify, this is an issue on Linux and if there is any possible impact on the users and their experience or SSD health?

Version-Release number of selected component (if applicable):
Firefox release (49.0.2 at this moment)
Comment 1 Martin Stransky 2016-11-21 09:28:37 UTC 
Moving upstream:

https://bugzilla.mozilla.org/show_bug.cgi?id=1304389
https://bugzilla.mozilla.org/show_bug.cgi?id=729165
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