argon2-wasm
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urbit
High wasm memory usage
I realize this is very little to go on, but want to document it anyway. Might be a browser issue, might be a wasm issue, might be a configuration issue, who knows.
Using Firefox, having left Bridge sit idly open overnight, and then running a measurement on about:memory, I saw a good 11 GB allocated for the page.
Firefox memory measurement
Web Content (pid 54939)
Explicit Allocations
11,868.59 MB (100.0%) -- explicit
├──11,215.59 MB (94.50%) -- window-objects
│ ├──11,126.95 MB (93.75%) -- top(https://localhost:3000/, id=12884901899)
│ │ ├──10,637.47 MB (89.63%) -- active/window(https://localhost:3000/)
│ │ │ ├──10,485.84 MB (88.35%) -- js-realm(https://localhost:3000/)
│ │ │ │ ├──10,316.61 MB (86.92%) -- classes
│ │ │ │ │ ├───9,880.71 MB (83.25%) -- class(ArrayBuffer)/objects
│ │ │ │ │ │ ├──9,880.00 MB (83.24%) ── non-heap/elements/wasm [19]
│ │ │ │ │ │ └──────0.71 MB (00.01%) ++ (2 tiny)
│ │ │ │ │ ├─────236.12 MB (01.99%) -- class(Object)/objects
│ │ │ │ │ │ ├──123.83 MB (01.04%) ++ malloc-heap
│ │ │ │ │ │ └──112.29 MB (00.95%) ── gc-heap [24]
│ │ │ │ │ └─────199.79 MB (01.68%) ++ (9 tiny)
│ │ │ │ └─────169.23 MB (01.43%) ++ (7 tiny)
│ │ │ └─────151.63 MB (01.28%) ++ (4 tiny)
│ │ └─────489.47 MB (04.12%) ++ (24 tiny)
│ └──────88.64 MB (00.75%) ++ (6 tiny)
├─────371.80 MB (03.13%) ── heap-unclassified
├─────177.96 MB (01.50%) ++ js-non-window
└─────103.25 MB (00.87%) ++ (23 tiny)
Other Measurements
26.38 MB (100.0%) -- decommitted
└──26.38 MB (100.0%) ── js-non-window/gc-heap/decommitted-arenas
2,208 (100.0%) -- event-counts
└──2,208 (100.0%) -- window-objects
├────705 (31.93%) -- top(https://localhost:3000/, id=12884901899)/active/window(https://localhost:3000/)/dom
│ ├──696 (31.52%) ── event-listeners [24]
│ └────9 (00.41%) ── event-targets
└──── [etc]
1,373.68 MB (100.0%) -- heap-committed
├──1,338.95 MB (97.47%) ── allocated
└─────34.73 MB (02.53%) ── overhead
11,204.27 MB (100.0%) -- js-main-runtime
├──10,568.93 MB (94.33%) -- realms
│ ├──10,383.31 MB (92.67%) -- classes/objects
│ │ ├───9,884.19 MB (88.22%) -- non-heap
│ │ │ ├──9,880.00 MB (88.18%) ── elements/wasm
│ │ │ └──────4.19 MB (00.04%) ── code/wasm
│ │ ├─────332.14 MB (02.96%) ── gc-heap
│ │ └─────166.98 MB (01.49%) -- malloc-heap
│ │ ├──132.44 MB (01.18%) ── elements/normal
│ │ └───34.55 MB (00.31%) ++ (2 tiny)
│ └─────185.62 MB (01.66%) ++ (11 tiny)
├─────547.05 MB (04.88%) -- zones
│ ├──283.40 MB (02.53%) ++ (17 tiny)
│ └──263.64 MB (02.35%) ── type-pool
└──────88.30 MB (00.79%) ++ (2 tiny)
606.62 MB (100.0%) -- js-main-runtime-gc-heap-committed
├──597.37 MB (98.48%) -- used
│ ├──577.54 MB (95.21%) -- gc-things
│ │ ├──332.14 MB (54.75%) ── objects
│ │ ├───92.61 MB (15.27%) ── object-groups
│ │ ├───72.71 MB (11.99%) ── shapes
│ │ ├───41.82 MB (06.89%) ── scripts
│ │ ├───15.38 MB (02.53%) ── lazy-scripts
│ │ ├───11.51 MB (01.90%) ── scopes
│ │ ├────7.36 MB (01.21%) ── strings
│ │ └────4.01 MB (00.66%) ++ (4 tiny)
│ ├────9.95 MB (01.64%) ── arena-admin
│ └────9.88 MB (01.63%) ── chunk-admin
└────9.25 MB (01.52%) -- unused
├──8.25 MB (01.36%) ++ gc-things
└──1.00 MB (00.16%) ++ (2 tiny)
233 (100.0%) -- js-main-runtime-realms
├──227 (97.42%) -- user
│ ├───48 (20.60%) ++ (45 tiny)
│ ├───24 (10.30%) ── [etc]
│ ├───24 (10.30%) ── https://localhost:3000/ [24]
│ ├────5 (02.15%) ── [etc]
└────6 (02.58%) ++ system
1,388 (100.0%) -- observer-service-suspect
├────509 (36.67%) ── referent(topic=memory-pressure)
├────410 (29.54%) ── referent(topic=xpcom-shutdown)
├────213 (15.35%) ── referent(topic=chrome-flush-skin-caches)
├────129 (09.29%) ── referent(topic=wake_notification)
└────127 (09.15%) ── referent(topic=font-info-updated)
0.00 MB ── gfx-surface-quartz
0.00 MB ── gfx-textures
0.00 MB ── gfx-textures-peak
0.00 MB ── gfx-tiles-waste
0 ── ghost-windows
1,338.95 MB ── heap-allocated
1.00 MB ── heap-chunksize
1,673.00 MB ── heap-mapped
0.01 MB ── imagelib-surface-cache-estimated-locked
0.01 MB ── imagelib-surface-cache-estimated-total
0 ── imagelib-surface-cache-overflow-count
51.67 MB ── js-main-runtime-temporary-peak
27 ── page-faults-hard
15,777,397 ── page-faults-soft
81.79 MB ── resident
3,459.25 MB ── resident-peak
23.98 MB ── resident-unique
0.69 MB ── script-preloader-memmapped-cache
0 ── unresolved-ipc-responses
124,247.59 MB ── vsize
11,248.13 MB ── wasm-guard-pages [2]
0.00 MB ── wasm-runtime
But then, making a memory snapshot on the page itself using dev console shows nothing interesting at all:
Did the OS also report high memory usage? If not, this might just be WASM virtual memory that the browser has "allocated," which isn't necessarily a problem.
Yes, the reason I noticed was that the OS was complaining about memory pressure. I did not do any logging on the OS-level though.