IB (after closing channels+ twitter)

Main Process

Explicit Allocations
452.14 MB (100.0%) -- explicit
├──172.76 MB (38.21%) -- js-non-window
│  ├───87.68 MB (19.39%) -- gc-heap
│  │   ├──84.40 MB (18.67%) ── decommitted-arenas
│  │   └───3.28 MB (00.72%) ++ (3 tiny)
│  ├───83.51 MB (18.47%) -- compartments
│  │   ├──81.92 MB (18.12%) -- non-window-global
│  │   │  ├──34.57 MB (07.65%) -- compartment([System Principal], jar:file:///C:/Program%20Files%20(x86)/Instantbird/omni.ja!/components/imConversations.js)
│  │   │  │  ├──32.37 MB (07.16%) -- gc-heap
│  │   │  │  │  ├──30.41 MB (06.73%) ── unused-gc-things
│  │   │  │  │  └───1.96 MB (00.43%) ++ (5 tiny)
│  │   │  │  └───2.20 MB (00.49%) ++ (5 tiny)
│  │   │  ├──21.65 MB (04.79%) -- compartment([System Principal], jar:file:///C:/Program%20Files%20(x86)/Instantbird/omni.ja!/components/twitter.js)
│  │   │  │  ├───9.52 MB (02.11%) ── string-chars
│  │   │  │  ├───6.56 MB (01.45%) ++ gc-heap
│  │   │  │  ├───5.42 MB (01.20%) ── objects/slots
│  │   │  │  └───0.15 MB (00.03%) ++ (3 tiny)
│  │   │  ├──13.72 MB (03.04%) -- compartment([System Principal], resource:///modules/jsProtoHelper.jsm)
│  │   │  │  ├──12.69 MB (02.81%) -- gc-heap
│  │   │  │  │  ├──12.05 MB (02.67%) ── unused-gc-things
│  │   │  │  │  └───0.64 MB (00.14%) ++ (6 tiny)
│  │   │  │  └───1.03 MB (00.23%) ++ (5 tiny)
│  │   │  └──11.98 MB (02.65%) ++ (118 tiny)
│  │   └───1.59 MB (00.35%) ++ no-global/compartment(atoms)
│  └────1.57 MB (00.35%) ++ runtime
├──157.55 MB (34.85%) ── heap-unclassified
├───62.98 MB (13.93%) -- gfx
│   ├──43.58 MB (09.64%) ── font-charmaps [48]
│   ├──11.37 MB (02.51%) ── font-tables [48]
│   ├───7.98 MB (01.76%) ── font-list [48]
│   └───0.05 MB (00.01%) ++ (2 tiny)
├───45.41 MB (10.04%) -- window-objects
│   ├──26.53 MB (05.87%) -- top(chrome://instantbird/content/instantbird.xul, id=26)/active/window(chrome://instantbird/content/instantbird.xul)
│   │  ├──17.40 MB (03.85%) -- layout
│   │  │  ├──10.07 MB (02.23%) ── pres-shell
│   │  │  └───7.33 MB (01.62%) ++ (6 tiny)
│   │  ├───6.54 MB (01.45%) ++ dom
│   │  └───2.60 MB (00.57%) ++ (3 tiny)
│   ├───6.73 MB (01.49%) ++ top(about:memory, id=69)/active/window(about:memory)
│   ├───6.21 MB (01.37%) -- top(chrome://instantbird/content/instantbird.xul, id=6)/active/window(chrome://instantbird/content/instantbird.xul)
│   │   ├──5.08 MB (01.12%) ++ js/compartment([System Principal], about:blank)
│   │   └──1.12 MB (00.25%) ++ (4 tiny)
│   └───5.94 MB (01.31%) ++ (5 tiny)
└───13.43 MB (02.97%) ++ (11 tiny)

Other Measurements
139 (100.0%) -- js-compartments
├──137 (98.56%) ── system
└────2 (01.44%) ── user

187.36 MB (100.0%) -- js-main-runtime
├───98.11 MB (52.37%) -- compartments
│   ├──71.32 MB (38.07%) -- gc-heap
│   │  ├──54.06 MB (28.86%) ── unused-gc-things
│   │  ├───7.38 MB (03.94%) -- objects
│   │  │   ├──5.69 MB (03.04%) ── non-function
│   │  │   └──1.69 MB (00.90%) ── function
│   │  ├───4.87 MB (02.60%) ── strings
│   │  ├───3.52 MB (01.88%) ++ shapes
│   │  └───1.49 MB (00.80%) ++ (4 tiny)
│   ├──11.82 MB (06.31%) ── string-chars
│   ├───7.59 MB (04.05%) -- objects
│   │   ├──7.51 MB (04.01%) ── slots
│   │   └──0.08 MB (00.04%) ++ (2 tiny)
│   ├───4.28 MB (02.29%) -- shapes-extra
│   │   ├──3.39 MB (01.81%) ── compartment-tables
│   │   └──0.89 MB (00.48%) ++ (3 tiny)
│   └───3.09 MB (01.65%) ++ (6 tiny)
├───87.68 MB (46.80%) -- gc-heap
│   ├──84.40 MB (45.05%) ── decommitted-arenas
│   ├───2.48 MB (01.33%) ── chunk-admin
│   └───0.79 MB (00.42%) ++ (2 tiny)
└────1.57 MB (00.84%) ── runtime

74.60 MB (100.0%) -- js-main-runtime-gc-heap-committed
├──54.86 MB (73.53%) -- unused
│  ├──54.06 MB (72.47%) ── gc-things
│  ├───0.79 MB (01.06%) ── arenas
│  └───0.00 MB (00.00%) ── chunks
└──19.75 MB (26.47%) -- used
   ├──16.85 MB (22.58%) ── gc-things
   ├───2.48 MB (03.33%) ── chunk-admin
   └───0.41 MB (00.55%) ── arena-admin

0 (100.0%) -- low-memory-events
├──0 (100.0%) ── physical
└──0 (100.0%) ── virtual

30.81 MB (100.0%) -- window-objects
├──20.16 MB (65.44%) -- layout
│  ├──10.68 MB (34.67%) ── pres-shell
│  ├───3.57 MB (11.58%) ── frames
│  ├───2.29 MB (07.42%) ── style-contexts
│  ├───1.74 MB (05.63%) ── rule-nodes
│  ├───0.91 MB (02.94%) ── style-sets
│  ├───0.77 MB (02.51%) ── line-boxes
│  └───0.21 MB (00.68%) ++ (2 tiny)
├──10.37 MB (33.64%) -- dom
│  ├───4.11 MB (13.34%) ── element-nodes
│  ├───3.67 MB (11.90%) ── orphan-nodes
│  ├───2.47 MB (08.03%) ── text-nodes
│  └───0.11 MB (00.36%) ++ (3 tiny)
└───0.28 MB (00.92%) ++ (2 tiny)

  452.14 MB ── explicit
    0.00 MB ── gfx-d2d-surfacecache
    0.00 MB ── gfx-d2d-surfacevram
    0.00 MB ── gfx-d2d-vram-drawtarget
    0.00 MB ── gfx-d2d-vram-sourcesurface
    6.36 MB ── gfx-surface-image
    2.21 MB ── gfx-surface-win32
          0 ── ghost-windows
  291.27 MB ── heap-allocated
  863.18 MB ── heap-committed
  571.90 MB ── heap-committed-unused
    196.34% ── heap-committed-unused-ratio
    2.02 MB ── heap-dirty
1,209.73 MB ── heap-unused
    0.02 MB ── images-content-used-uncompressed
  159.00 MB ── js-gc-heap
          0 ── low-commit-space-events
1,052.11 MB ── private
1,054.24 MB ── resident
    3.35 MB ── storage-sqlite
1,848.21 MB ── vsize