1312311 - Potential defect in one or more memory reporters

Status: RESOLVED DUPLICATE of bug 1311039

(Toolkit :: about:memory, defect)

Description

[rahiparikh]

Attachment: about:memory screenshot.

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:49.0) Gecko/20100101 Firefox/49.0
Build ID: 20161019084923

Steps to reproduce:

Start firefox, open about:memory page and try to run 'Measure' in 'Memory reports' section.




Actual results:

I am getting the following error message::

WARNING: the following values are negative or unreasonably large.

    explicit/js-non-window
    explicit/(16 tiny)
    explicit/(16 tiny)/heap-unclassified 

This indicates a defect in one or more memory reporters. The invalid values are highlighted.

Comment 1

[Loic]

When it happens, could you save and attach the memory log from about:memory, please.

Comment 2

[rahiparikh]

Attachment: about:memory report

See attached log files. 

PS: Not sure if it is related but the Firefox is miserably slow even after GC, CC, and Reduce Memory usage functions.

Comment 3

[Adrian Florinescu [:aflorinescu]]

This has the potential to be more than a issue in the memory reporters, but lets start with the about:memory component.

Comment 4

[Nicholas Nethercote [inactive]]

This is the same as bug 1311039 -- "heap-allocated" is (strangely) zero, and all the other problems follow from that.