థండర్బర్డ్ Community Forum

My TB 147.0.2 Release channel is using excessive amounts of memory. Below is the memory usage data.

Previously I was on the ESR channel for many years. Also I originally used the Lightning calendar plug.

What I'm seeing is that when TB starts the memory usage is high. If I check at another time on the same day it is sometimes only around 250-350MB.

I've tried suggest options like reducing data in Local Folders (on a separate data drive) but to no avail. As I type now TB memory usage is now only 286.4MB. However rest assured in a while this will jump back to over 3GB and it has an is now 3,151.4MB.

I don't see this on another 2 PCs. One is setup with Locals Folders and the other is just the mail Inbox and sub folders. The only other difference is that the PC with this TB installation also has one Newsgroup server configured.

There surely has to be a bug somewhere causing these excessive memory usages.

Main Process (pid 13380) Explicit Allocations

3,313,474,259 B (100.0%) -- explicit ├──3,179,427,220 B (95.95%) ── heap-unclassified ├─────38,393,176 B (01.16%) ++ window-objects ├─────38,283,520 B (01.16%) ++ js-non-window ├─────23,911,654 B (00.72%) ++ startup-cache ├─────11,605,760 B (00.35%) ++ storage ├──────5,005,920 B (00.15%) ++ images ├──────4,031,040 B (00.12%) ++ threads ├──────2,866,272 B (00.09%) ++ layout ├──────2,273,616 B (00.07%) ++ script-preloader ├──────1,422,800 B (00.04%) ── icu ├──────1,083,184 B (00.03%) ++ xpconnect ├────────917,568 B (00.03%) ++ dom ├────────704,416 B (00.02%) ++ atoms ├────────627,133 B (00.02%) ++ preferences ├────────546,544 B (00.02%) ++ gfx ├────────360,720 B (00.01%) ++ cycle-collector ├────────328,720 B (00.01%) ++ telemetry ├────────318,528 B (00.01%) ++ phc ├────────312,608 B (00.01%) ++ fog ├────────305,312 B (00.01%) ++ url-preloader ├────────212,528 B (00.01%) ++ network ├────────212,480 B (00.01%) ++ string-bundles ├────────166,128 B (00.01%) ++ data-storage ├─────────80,048 B (00.00%) ── profiler/profiler-state ├─────────42,356 B (00.00%) ── skia-font-cache ├─────────19,024 B (00.00%) ++ xpcom ├─────────10,064 B (00.00%) ── memory-reporter-manager ├──────────3,312 B (00.00%) ── xul-prototype-cache/other ├──────────1,904 B (00.00%) ── cookie-service ├────────────624 B (00.00%) ── history-links-hashtable ├─────────────80 B (00.00%) ── cert-storage/storage ├──────────────0 B (00.00%) ── maildb/database(UNKNOWN-FOLDER) ├──────────────0 B (00.00%) ── media/libogg ├──────────────0 B (00.00%) ── spell-check └──────────────0 B (00.00%) ++ webgl

Other Measurements

140,737,488,289,792 B (100.0%) -- address-space ├──138,527,509,839,872 B (98.43%) ── free(segments=402) ├────2,206,026,694,656 B (01.57%) ++ reserved └────────3,951,755,264 B (00.00%) ++ commit

273,510,400 B (100.0%) -- decommitted ├──269,578,240 B (98.56%) -- heap │ ├──268,451,840 B (98.15%) ── decommitted │ └────1,126,400 B (00.41%) ++ unused-pages └────3,932,160 B (01.44%) ── js-non-window/gc-heap/decommitted-pages

5,245 (100.0%) -- event-counts └──5,245 (100.0%) ++ window-objects

1 (100.0%) -- extensions └──1 (100.0%) ── Extension(id=default-theme@mozilla.org, name="System theme — auto", baseURL=moz-extension://d69e3532-324c-43f3-959c-7bc3f6aad1c5/)

3,580,661,760 B (100.0%) -- heap ├──3,311,083,520 B (92.47%) -- committed │ ├──3,272,606,352 B (91.40%) ── allocated │ ├─────28,273,376 B (00.79%) ── bookkeeping │ ├──────8,202,000 B (00.23%) ++ bin-unused │ ├──────1,785,856 B (00.05%) ── unused-pages/dirty │ └────────215,936 B (00.01%) ── waste └────269,578,240 B (07.53%) ++ decommitted

4,942,128 B (100.0%) -- images └──4,942,128 B (100.0%) -- content

  ├──4,934,128 B (99.84%) ++ vector
  └──────8,000 B (00.16%) ++ raster/used

19 (100.0%) -- ipc-channels ├───3 (15.79%) ── PBackgroundParent ├───3 (15.79%) ── PProfilerParent ├───1 (05.26%) ── PAPZInputBridgeChild ├───1 (05.26%) ── PBackgroundStarterParent ├───1 (05.26%) ── PCanvasManagerChild ├───1 (05.26%) ── PCompositorManagerChild ├───1 (05.26%) ── PContentParent ├───1 (05.26%) ── PGPUChild ├───1 (05.26%) ── PImageBridgeChild ├───1 (05.26%) ── PProcessHangMonitorParent ├───1 (05.26%) ── PRDDChild ├───1 (05.26%) ── PRemoteWorkerDebuggerManagerParent ├───1 (05.26%) ── PRemoteWorkerServiceParent ├───1 (05.26%) ── PVRManagerChild └───1 (05.26%) ── PVsyncBridgeChild

20 (100.0%) -- ipc-channels-peak ├───3 (15.00%) ── PBackgroundParent ├───3 (15.00%) ── PProfilerParent ├───2 (10.00%) ── PAPZInputBridgeChild ├───1 (05.00%) ── PBackgroundStarterParent ├───1 (05.00%) ── PCanvasManagerChild ├───1 (05.00%) ── PCompositorManagerChild ├───1 (05.00%) ── PContentParent ├───1 (05.00%) ── PGPUChild ├───1 (05.00%) ── PImageBridgeChild ├───1 (05.00%) ── PProcessHangMonitorParent ├───1 (05.00%) ── PRDDChild ├───1 (05.00%) ── PRemoteWorkerDebuggerManagerParent ├───1 (05.00%) ── PRemoteWorkerServiceParent ├───1 (05.00%) ── PVRManagerChild └───1 (05.00%) ── PVsyncBridgeChild

8 (100.0%) -- js-helper-threads ├──8 (100.0%) ── idle └──0 (00.00%) ── active

47,463,752 B (100.0%) -- js-main-runtime ├──17,759,904 B (37.42%) ++ realms ├──16,789,232 B (35.37%) ++ zones ├──11,440,056 B (24.10%) ── runtime └───1,474,560 B (03.11%) ++ gc-heap

11,691,152 B (100.0%) -- js-main-runtime-gc-buffers ├──11,270,624 B (96.40%) ── used ├─────218,656 B (01.87%) ── free └─────201,872 B (01.73%) ── admin

24,379,392 B (100.0%) -- js-main-runtime-gc-heap-committed ├──20,174,072 B (82.75%) ++ used └───4,205,320 B (17.25%) ++ unused

20 (100.0%) -- js-main-runtime-realms ├──13 (65.00%) ++ system └───7 (35.00%) ++ user

21 (100.0%) -- message-manager └──21 (100.0%) -- referent

  ├──10 (47.62%) -- child-process-manager
  │  ├──10 (47.62%) ── strong
  │  └───0 (00.00%) -- weak
  │      ├──0 (00.00%) ── alive
  │      └──0 (00.00%) ── dead
  ├───6 (28.57%) -- parent-process-manager
  │   ├──6 (28.57%) ── strong
  │   └──0 (00.00%) -- weak
  │      ├──0 (00.00%) ── alive
  │      └──0 (00.00%) ── dead
  └───5 (23.81%) -- global-manager
      ├──5 (23.81%) ── strong
      └──0 (00.00%) -- weak
         ├──0 (00.00%) ── alive
         └──0 (00.00%) ── dead

1,924 (100.0%) -- observer-service └──1,924 (100.0%) ++ referent

868 (100.0%) -- observer-service-suspect ├──437 (50.35%) ── referent(topic=xpcom-shutdown) ├──225 (25.92%) ── referent(topic=memory-pressure) └──206 (23.73%) ── referent(topic=last-pb-context-exited)

363 (100.0%) -- preference-service └──363 (100.0%) ++ referent

0 (100.0%) -- queued-ipc-messages └──0 (100.0%) ── content-parent(Browser, pid=2140, open channel, 0x228780fb828, refcnt=35)

147,366 B (100.0%) -- shared-string-bundles ├───65,420 B (44.39%) ── SharedStringBundle(url="chrome://global/locale/dom/dom.properties", shared=true, refCount=2, sharedMemorySize=65420) ├───24,560 B (16.67%) ── SharedStringBundle(url="chrome://global/locale/layout/htmlparser.properties", shared=true, refCount=2, sharedMemorySize=24560) ├───22,528 B (15.29%) ── SharedStringBundle(url="chrome://global/locale/security/security.properties", shared=true, refCount=2, sharedMemorySize=22528) ├───11,830 B (08.03%) ── SharedStringBundle(url="chrome://necko/locale/necko.properties", shared=true, refCount=2, sharedMemorySize=11830) ├────7,420 B (05.04%) ── SharedStringBundle(url="chrome://global/locale/css.properties", shared=true, refCount=2, sharedMemorySize=7420) ├────6,190 B (04.20%) ── SharedStringBundle(url="chrome://global/locale/layout_errors.properties", shared=true, refCount=2, sharedMemorySize=6190) ├────2,756 B (01.87%) ── SharedStringBundle(url="chrome://global/locale/commonDialogs.properties", shared=true, refCount=2, sharedMemorySize=2756) ├────2,358 B (01.60%) ── SharedStringBundle(url="chrome://global/locale/printing.properties", shared=true, refCount=2, sharedMemorySize=2358) ├────2,174 B (01.48%) ── SharedStringBundle(url="chrome://global/locale/layout/HtmlForm.properties", shared=true, refCount=2, sharedMemorySize=2174) ├────1,488 B (01.01%) ── SharedStringBundle(url="chrome://global/locale/mathml/mathml.properties", shared=true, refCount=2, sharedMemorySize=1488) ├──────246 B (00.17%) ── SharedStringBundle(url="chrome://branding/locale/brand.properties", shared=true, refCount=2, sharedMemorySize=246) ├──────226 B (00.15%) ── SharedStringBundle(url="chrome://global/locale/xul.properties", shared=true, refCount=2, sharedMemorySize=226) └──────170 B (00.12%) ── SharedStringBundle(url="chrome://global/locale/svg/svg.properties", shared=true, refCount=2, sharedMemorySize=170)

28,598,376 B (100.0%) -- window-objects ├──16,114,528 B (56.35%) ++ dom ├──12,432,968 B (43.47%) ++ layout └──────50,880 B (00.18%) ── property-tables

          262,144 B ── font-list-shmem
                0 B ── gfx-textures
                0 B ── gfx-textures-peak
                0 B ── gfx-tiles-waste
                  0 ── ghost-windows
                0 B ── gpu-committed
                0 B ── gpu-dedicated
                0 B ── gpu-shared
    3,272,606,352 B ── heap-allocated
        1,048,576 B ── heap-chunksize
                  0 ── imagelib-surface-cache-already-present-count
          304,880 B ── imagelib-surface-cache-estimated-locked
          314,928 B ── imagelib-surface-cache-estimated-total
                 85 ── imagelib-surface-cache-image-count
                 52 ── imagelib-surface-cache-image-surface-count
                 85 ── imagelib-surface-cache-locked-image-count
                 45 ── imagelib-surface-cache-locked-surfaces-count
                  0 ── imagelib-surface-cache-overflow-count
                  0 ── imagelib-surface-cache-table-failure-count
                  7 ── imagelib-surface-cache-tracked-cost-count
                  7 ── imagelib-surface-cache-tracked-expiry-count
                  0 ── imagelib-surface-cache-tracking-failure-count
          454,656 B ── js-main-runtime-temporary-peak
                  8 ── js-main-runtime-zone-count
    3,386,552,320 B ── private
    3,497,312,256 B ── resident
    3,369,873,408 B ── resident-unique
       29,638,345 B ── shmem-allocated
        2,612,339 B ── shmem-mapped
        6,256,466 B ── system-heap-allocated
2,209,978,449,920 B ── vsize

70,172,792,717,312 B ── vsize-max-contiguous

                0 B ── wasm-runtime
                  0 ── webgl-buffer-count
                0 B ── webgl-buffer-memory
                  0 ── webgl-context-count
                  0 ── webgl-renderbuffer-count
                0 B ── webgl-renderbuffer-memory
                  0 ── webgl-shader-count
                  0 ── webgl-texture-count
                0 B ── webgl-texture-memory

End of Main Process (pid 13380)

I am using Thunderbird 115.18.0 and Windows 7 professional (no snarky comments please).

All has been working fine for years, but in the last few days, strange thing have been happening:

In the pane with all of my email accounts, the ">" icon to the left of the first account has been disappearing. This meant I could not look at any folders, including Inbox, Drafts, Sent etc and handmade folders. Cured by closing and opening Thunderbird.

I now have two Archive folders, one called Archive, the other Archives. Both empty, neither can be deleted.

Periodically, when the ">" is present, selecting it (to "V"), the list of folders SLOWLY appears, one folder at a time.

Periodically, the bottom of the Thunderbird window, shows a 'downloading' message, of hundreds of files. Several GB of data has been downloaded over a couple of days.

Opening the Inbox folder, the pane with subject, correspondents, date etc has changed the sort order.

Sometimes, all of the emails in this pane have had their font underlined.

Nothing on my system has intentionally changed,

Any ideas what has gone wrong, and how to put things right would be appreciated.

Thanks,

Hi,

Since updating to Thunderbird 140.7.1esr (64-bit) on Windows 11, moving messages from Inbox to any folder takes about 7 seconds.

Details:

Account type: IMAP (Cogeco)

Happens in all folders

Inbox has ~600 messages (not large)

Was working normally before the recent update

Delay occurs every time moving a message from Inbox to another folder

No freezing — just a delay before the move completes

No antivirus changes

Issue started immediately after update

This appears to be related to IMAP sync behavior introduced in 140.x.

Has anyone else reported this, or is there a known regression?

Thank you.