How to reduce memory consumption of uBO? It keeps crashing

[XCanG]

I have an issue that is somewhat consistent, but not appear very often (once in a week). uBO keeps consuming a lot of RAM until it reaches about 10 GB and then extension crashed because "Out of memory". I can keep track of the memory in Google Chrome internal task manager (Shift+Esc). To me it feels like uBO keeps some kind of logs or something that accumulate over time and the more it blocks, the faster it crashes. I find out that using site like YouTube that have a lot of ads (like 500-1000 per tab) make this accumulation of RAM faster.

I don't know what else to add, but I didn't find any options that can reduce RAM usage or could clear current RAM.

Screenshot from task manager

Specs:

• Windows 10 x64
• Google Chrome v126.0.6478.127
• uBlock Origin 1.59.0

[garry-ut99]

Looking at uBO documentation, it seems neither high RAM usage nor crashes, are considered uBO's fault:

• https://github.com/gorhill/uBlock/wiki/Myth:-uBlock-consumes-several-or-several-dozen-GB-of-RAM
• https://github.com/gorhill/uBlock/wiki/Can-uBO-crash-a-browser%3F

but I'm not sure about your case, it would be good if you could make sure that your issue is not just about virtual RAM.

[XCanG]

The crash was for extension, but it can be reloaded again in extension menu. But it's process, that run extension uses this amount of RAM. While I use other extensions and they do not consume this much RAM and don't crash.

[gorhill]

Google Chrome v126.0.0.0.0

Is this really the exact version of your Google Chrome? If not, can you provide the exact version?

[XCanG]

Also please post your troubleshooting information from SUpport pane in uBO's dashboard.

uBlock Origin: 1.59.0
Chromium: 126
filterset (summary):
 network: 175902
 cosmetic: 132686
 scriptlet: 34117
 html: 0
listset (total-discarded, last-updated):
 added:
  JPN-1: 15183-30, 11h.17m
  KOR-1: 5085-47, 10h.17m
  adguard-spyware-url: 1713-7, 11h.17m
  fanboy-cookiemonster: 52088-237, 4d.11h.22m
  fanboy-thirdparty_social: 68-0, 2d.11h.21m
  ublock-annoyances: 5970-12, 1h.17m Δ
  ublock-cookies-easylist: 1720-9, 6d.11h.24m
 default:
  user-filters: 28-0, never
  RUS-0: 40710-105, 17m Δ
  easylist: 85363-649, 1h.17m Δ
  easyprivacy: 53075-703, 1h.17m Δ
  plowe-0: 3543-0, 7d.12h.25m
  ublock-badware: 11271-6, 1h.17m Δ
  ublock-filters: 40233-304, 1h.17m Δ
  ublock-privacy: 1192-140, 1h.17m Δ
  ublock-quick-fixes: 153-0, 1h.17m Δ
  ublock-unbreak: 2464-2, 1h.17m Δ
  urlhaus-1: 25255-0, 11h.17m
filterset (user): [array of 30 redacted]
trustedset:
 added: [array of 7 redacted]
hostRuleset:
 added: [array of 3 redacted]
userSettings:
 advancedUserEnabled: true
 cloudStorageEnabled: true
 suspendUntilListsAreLoaded: true
hiddenSettings: [none]
supportStats:
 allReadyAfter: 1634 ms
 maxAssetCacheWait: 243 ms
 cacheBackend: indexedDB

[XCanG]

I also check Console tab in devtools and find that there are 570 errors of same kind:

Could it be related?

[garry-ut99]

gorhill: Have you tried to narrow down if another extension must be enabled for the issue to appear.

XCanG: I have not, because they aren't related to ads, should be ignored and don't mess up with other addons and don't take much RAM.

stephenhawk8054 : don't assume extensions can't conflict with each other. (...)
gorhill: no assumption should be made that other extensions can't be the root cause (...)

Yes, even theoretically unrelated extensions might affect other extensions and uBO, here is a recent example where an other extension - Bitwarden password manager affected uBO badly: #3217 (comment) + the next 3 comments.

[XCanG]

a recent example where an other extension - Bitwarden password manager affected uBO badly

Ohh, didn't know that, I also use Bitwarden.

[gorhill]

there are 570 errors of same kind

This is fixed in dev build with gorhill/uBlock@1b464f7.

Could it be related?

No clue. You could try the dev build to see if this changes something.