Main Process
Explicit Allocations

794.47 MB (100.0%) -- explicit
├──266.00 MB (33.48%) ── heap-unclassified
├──213.87 MB (26.92%) -- window-objects
│  ├───68.03 MB (08.56%) -- top(about:memory, id=2979)
│  │   ├──34.58 MB (04.35%) -- active/window(about:memory)
│  │   │  ├──34.55 MB (04.35%) -- layout
│  │   │  │  ├──29.80 MB (03.75%) -- frames
│  │   │  │  │  ├──21.18 MB (02.67%) ── nsInlineFrame
│  │   │  │  │  ├───8.61 MB (01.08%) ── nsTextFrame
│  │   │  │  │  └───0.01 MB (00.00%) ── sundries
│  │   │  │  └───4.75 MB (00.60%) ++ (8 tiny)
│  │   │  └───0.03 MB (00.00%) ++ (3 tiny)
│  │   └──33.44 MB (04.21%) -- js-zone(0x3cb40000)
│  │      ├──31.31 MB (03.94%) -- strings
│  │      │  ├──18.59 MB (02.34%) -- string(<non-notable strings>)
│  │      │  │  ├──14.72 MB (01.85%) -- malloc-heap
│  │      │  │  │  ├──14.15 MB (01.78%) ── latin1
│  │      │  │  │  └───0.56 MB (00.07%) ── two-byte
│  │      │  │  └───3.88 MB (00.49%) ++ gc-heap
│  │      │  └──12.71 MB (01.60%) ++ (138 tiny)
│  │      └───2.14 MB (00.27%) ++ (8 tiny)
│  ├───35.04 MB (04.41%) -- top(https://.../, id=2904)
│  │   ├──19.82 MB (02.49%) -- active
│  │   │  ├──19.81 MB (02.49%) -- window(https://.../)
│  │   │  │  ├──11.03 MB (01.39%) ++ (3 tiny)
│  │   │  │  └───8.78 MB (01.11%) ++ layout
│  │   │  └───0.01 MB (00.00%) ++ window(about:blank)
│  │   └──15.22 MB (01.92%) ++ js-zone(0x27986800)
│  ├───26.11 MB (03.29%) -- top(resource://gre-resources/hiddenWindow.html, id=3)
│  │   ├──24.82 MB (03.12%) -- js-zone(0x18d0a000)
│  │   │  ├──12.87 MB (01.62%) ++ strings
│  │   │  ├──11.01 MB (01.39%) ── unused-gc-things
│  │   │  └───0.94 MB (00.12%) ++ (7 tiny)
│  │   └───1.28 MB (00.16%) ++ active
│  ├───22.61 MB (02.85%) ++ (11 tiny)
│  ├───13.72 MB (01.73%) -- top(https://.../, id=17)
│  │   ├──11.24 MB (01.42%) -- active
│  │   │  ├──10.53 MB (01.33%) ++ window(https://.../)
│  │   │  └───0.71 MB (00.09%) ++ (3 tiny)
│  │   └───2.48 MB (00.31%) ++ js-zone(0x2841a800)
│  ├───11.45 MB (01.44%) -- top(chrome://browser/content/browser.xul, id=5)
│  │   ├───9.86 MB (01.24%) -- active
│  │   │   ├──9.76 MB (01.23%) ++ window(chrome://browser/content/browser.xul)
│  │   │   └──0.10 MB (00.01%) ++ window(about:blank)
│  │   └───1.59 MB (00.20%) ++ js-zone(0x19733800)
│  ├───10.64 MB (01.34%) -- top(http://..., id=28)
│  │   ├───8.85 MB (01.11%) -- active
│  │   │   ├──8.61 MB (01.08%) ++ window(http://...)
│  │   │   └──0.24 MB (00.03%) ++ window(about:blank)
│  │   └───1.79 MB (00.22%) ++ js-zone(0x276e9800)
│  ├────8.99 MB (01.13%) ++ top(https://..., id=34)
│  ├────8.93 MB (01.12%) ++ top(http://..., id=2930)
│  └────8.36 MB (01.05%) ++ top(https://.../, id=32)
├──212.76 MB (26.78%) -- js-non-window/zones
│  ├──196.59 MB (24.75%) -- zone(0x869000)
│  │  ├──125.62 MB (15.81%) ++ strings
│  │  ├───60.64 MB (07.63%) ++ (468 tiny)
│  │  └───10.34 MB (01.30%) -- compartment([System Principal], Addon-SDK (from: resource://gre/modules/commonjs/toolkit/loader.js:249))
│  │      ├───8.94 MB (01.13%) ++ classes
│  │      └───1.40 MB (00.18%) ++ (8 tiny)
│  ├───12.55 MB (01.58%) -- zone(0x85c800)
│  │   ├──12.36 MB (01.56%) -- strings
│  │   │  ├──11.89 MB (01.50%) ++ string(<non-notable strings>)
│  │   │  └───0.46 MB (00.06%) ++ (3 tiny)
│  │   └───0.19 MB (00.02%) ++ (5 tiny)
│  └────3.62 MB (00.46%) ++ (9 tiny)
├───37.13 MB (04.67%) ++ (18 tiny)
├───21.68 MB (02.73%) -- storage
│   ├──16.71 MB (02.10%) -- sqlite
│   │  ├──10.20 MB (01.28%) -- places.sqlite
│   │  │  ├───9.65 MB (01.21%) ── cache-used [4]
│   │  │  └───0.55 MB (00.07%) ++ (2 tiny)
│   │  └───6.51 MB (00.82%) ++ (7 tiny)
│   └───4.98 MB (00.63%) ++ prefix-set
├───18.41 MB (02.32%) -- heap-overhead
│   ├───9.01 MB (01.13%) ── bookkeeping
│   ├───8.43 MB (01.06%) ── bin-unused
│   └───0.98 MB (00.12%) ── page-cache
├───16.36 MB (02.06%) -- add-ons
│   ├──11.59 MB (01.46%) -- uBlock0@raymondhill.net
│   │  ├──11.36 MB (01.43%) -- window-objects/top(resource://gre-resources/hiddenWindow.html, id=3)/active/window(chrome://ublock0/content/background.html#1.7.6)/js-compartment([System Principal], chrome://ublock0/content/background.html#1.7.6)
│   │  │  ├──10.59 MB (01.33%) ++ classes
│   │  │  └───0.77 MB (00.10%) ++ (8 tiny)
│   │  └───0.23 MB (00.03%) ++ js-non-window/zones/zone(0x869000)
│   └───4.77 MB (00.60%) ++ (13 tiny)
└────8.26 MB (01.04%) -- atom-tables
     ├──8.19 MB (01.03%) ── main
     └──0.06 MB (00.01%) ── static

Other Measurements

8,388,607.94 MB (100.0%) -- address-space
├──8,377,903.71 MB (99.87%) ── free(segments=796)
└─────10,704.22 MB (00.13%) ++ (2 tiny)

0.82 MB (100.0%) -- decommitted
└──0.82 MB (100.0%) -- workers/workers(chrome)
   ├──0.43 MB (53.11%) -- worker(resource://gre/modules/PageThumbsWorker.js, 0x17bc7800)
   │  ├──0.43 MB (53.11%) ── gc-heap/decommitted-arenas
   │  └──0.00 MB (00.00%) ── runtime/gc/nursery-decommitted
   ├──0.38 MB (46.89%) -- worker(resource:///modules/sessionstore/SessionWorker.js, 0x1fb5c000)
   │  ├──0.38 MB (46.89%) ── gc-heap/decommitted-arenas
   │  └──0.00 MB (00.00%) ── runtime/gc/nursery-decommitted
   └──0.00 MB (00.00%) ++ worker(resource://gre/modules/osfile/osfile_async_worker.js, 0xee3f000)

1 (100.0%) -- dom-media-stream-urls
└──1 (100.0%) ── owner unknown/blob:null/784960ca-a6f6-4271-a4cf-b24cb343a45d

8,844 (100.0%) -- event-counts
├──8,838 (99.93%) -- window-objects
│  ├──2,858 (32.32%) -- top(https://.../, id=2904)/active
│  │  ├──2,856 (32.29%) -- window(https://.../)/dom
│  │  │  ├──2,801 (31.67%) ── event-listeners
│  │  │  └─────55 (00.62%) ── event-targets
│  │  └──────2 (00.02%) ── window(about:blank)/dom/event-targets [2]
│  ├──2,005 (22.67%) -- top(chrome://browser/content/browser.xul, id=5)/active
│  │  ├──2,004 (22.66%) -- window(chrome://browser/content/browser.xul)/dom
│  │  │  ├──1,953 (22.08%) ── event-listeners
│  │  │  └─────51 (00.58%) ── event-targets
│  │  └──────1 (00.01%) ── window(about:blank)/dom/event-targets
│  ├──1,328 (15.02%) -- top(https://.../, id=17)/active
│  │  ├──1,305 (14.76%) -- window(https://.../)/dom
│  │  │  ├──1,302 (14.72%) ── event-listeners
│  │  │  └──────3 (00.03%) ── event-targets
│  │  └─────23 (00.26%) ++ (3 tiny)
│  ├────726 (08.21%) -- top(http://..., id=28)/active
│  │    ├──714 (08.07%) -- window(http://...)/dom
│  │    │  ├──712 (08.05%) ── event-listeners
│  │    │  └────2 (00.02%) ── event-targets
│  │    └───12 (00.14%) ++ window(about:blank)/dom
│  ├────336 (03.80%) -- top(about:addons, id=2933)/active
│  │    ├──333 (03.77%) -- window(about:addons)/dom
│  │    │  ├──332 (03.75%) ── event-listeners
│  │    │  └────1 (00.01%) ── event-targets
│  │    └────3 (00.03%) ++ window(about:blank)/dom
│  ├────279 (03.15%) -- top(http://.../, id=2959)/active/window(http://.../)/dom
│  │    ├──278 (03.14%) ── event-listeners
│  │    └────1 (00.01%) ── event-targets
│  ├────244 (02.76%) -- top(https://..., id=2949)/active
│  │    ├──230 (02.60%) -- window(https://...)/dom
│  │    │  ├──223 (02.52%) ── event-listeners
│  │    │  └────7 (00.08%) ── event-targets
│  │    └───14 (00.16%) ++ (2 tiny)
│  ├────229 (02.59%) -- top(https://..., id=2968)/active
│  │    ├──206 (02.33%) -- window(https://...)/dom
│  │    │  ├──197 (02.23%) ── event-listeners
│  │    │  └────9 (00.10%) ── event-targets
│  │    └───23 (00.26%) ++ (3 tiny)
│  ├────200 (02.26%) -- top(https://.../, id=32)/active
│  │    ├──171 (01.93%) -- window(https://...)/dom
│  │    │  ├──161 (01.82%) ── event-listeners
│  │    │  └───10 (00.11%) ── event-targets
│  │    └───29 (00.33%) ++ window(https://.../)/dom
│  ├────198 (02.24%) -- top(about:newtab, id=2991)/active/window(about:newtab)/dom
│  │    ├──197 (02.23%) ── event-listeners
│  │    └────1 (00.01%) ── event-targets
│  ├────161 (01.82%) -- top(https://..., id=34)/active/window(https://...)/dom
│  │    ├──159 (01.80%) ── event-listeners
│  │    └────2 (00.02%) ── event-targets
│  ├────140 (01.58%) ++ (8 tiny)
│  └────134 (01.52%) -- top(http://..., id=2930)/active
│       ├──133 (01.50%) -- window(http://...)/dom
│       │  ├──124 (01.40%) ── event-listeners
│       │  └────9 (00.10%) ── event-targets
│       └────1 (00.01%) ── window(about:blank)/dom/event-targets
└──────6 (00.07%) ++ add-ons/jid0-hyjN250ZzTOOX3evFwwAQBxE4ik@jetpack/window-objects/top(resource://jid0-hyjn250zztoox3evfwwaqbxe4ik-at-jetpack/adfly-skipper/data/panel.html, id=49)/active/window(resource://jid0-hyjn250zztoox3evfwwaqbxe4ik-at-jetpack/adfly-skipper/data/panel.html)/dom

656.86 MB (100.0%) -- heap-committed
├──638.45 MB (97.20%) ── allocated
└───18.41 MB (02.80%) ── overhead

7.57 MB (100.0%) -- images
├──4.82 MB (63.69%) -- content
│  ├──4.30 MB (56.84%) -- raster/used
│  │  ├──4.11 MB (54.33%) ── source
│  │  └──0.19 MB (02.50%) ── decoded-heap
│  └──0.52 MB (06.86%) -- vector/used
│     ├──0.52 MB (06.85%) ── source
│     └──0.00 MB (00.00%) ── decoded-heap
├──2.65 MB (35.09%) -- chrome
│  ├──2.13 MB (28.13%) -- vector/used
│  │  ├──2.13 MB (28.10%) ── source
│  │  └──0.00 MB (00.03%) ── decoded-heap
│  └──0.53 MB (06.96%) -- raster/used
│     ├──0.26 MB (03.50%) ── decoded-heap
│     └──0.26 MB (03.46%) ── source
└──0.09 MB (01.22%) -- uncached
   ├──0.08 MB (01.09%) -- vector/used
   │  ├──0.08 MB (01.09%) ── source
   │  └──0.00 MB (00.00%) ── decoded-heap
   └──0.01 MB (00.13%) ++ raster/used

619 (100.0%) -- js-main-runtime-compartments
├──601 (97.09%) -- system
│  ├──578 (93.38%) ++ (519 tiny)
│  ├───16 (02.58%) ── [System Principal], inProcessTabChildGlobal?ownedBy=chrome://browser/content/browser.xul [16]
│  └────7 (01.13%) ── [System Principal] [7]
└───18 (02.91%) ++ user

368 (100.0%) -- message-manager
└──368 (100.0%) -- referent
   ├──214 (58.15%) -- global-manager
   │  ├──214 (58.15%) ── strong
   │  └────0 (00.00%) ++ weak
   ├───96 (26.09%) -- parent-process-manager
   │   ├──96 (26.09%) ── strong
   │   └───0 (00.00%) ++ weak
   └───58 (15.76%) -- child-process-manager
       ├──39 (10.60%) -- weak
       │  ├──38 (10.33%) ── dead
       │  └───1 (00.27%) ── alive
       └──19 (05.16%) ── strong

2,139 (100.0%) -- observer-service
└──2,139 (100.0%) -- referent
   ├──1,568 (73.31%) ── strong
   └────571 (26.69%) -- weak
        ├──440 (20.57%) ── alive
        └──131 (06.12%) ── dead

532 (100.0%) -- observer-service-suspect
├──272 (51.13%) ── referent(topic=memory-pressure)
└──260 (48.87%) ── referent(topic=xpcom-shutdown)

1,072 (100.0%) -- preference-service
└──1,072 (100.0%) -- referent
   ├────881 (82.18%) ── strong
   └────191 (17.82%) -- weak
        ├──191 (17.82%) ── alive
        └────0 (00.00%) ── dead

      221.02 MB ── canvas-2d-pixels
       61.18 MB ── d3d11-shared-textures
        0.00 MB ── d3d9-shared-texture
        0.00 MB ── d3d9-shared-textures
        0.00 MB ── gfx-d2d-vram-draw-target
        0.05 MB ── gfx-d2d-vram-source-surface
        0.42 MB ── gfx-surface-win32
        0.00 MB ── gfx-textures
        0.00 MB ── gfx-textures-peak
        0.00 MB ── gfx-tiles-waste
              0 ── ghost-windows
      274.13 MB ── gpu-committed
      259.71 MB ── gpu-dedicated
       80.39 MB ── gpu-shared
      638.45 MB ── heap-allocated
        1.00 MB ── heap-chunksize
      711.00 MB ── heap-mapped
              1 ── host-object-urls
        1.17 MB ── imagelib-surface-cache-estimated-locked
        3.76 MB ── imagelib-surface-cache-estimated-total
              0 ── imagelib-surface-cache-overflow-count
       21.42 MB ── js-main-runtime-temporary-peak
    1,432.93 MB ── private
    1,350.08 MB ── resident
    1,349.45 MB ── resident-unique
       88.35 MB ── system-heap-allocated
   10,686.22 MB ── vsize
4,226,144.75 MB ── vsize-max-contiguous

End of Main Process