100% CPU Usage through all 56 CPU Cores, please help it makes my room like 10 Celsius hotter

[otherek]

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Hi, Im using Brave on 10k$ workstation, 56 Core Xeon CPU, 256GB of RAM etc..
Week ago I noticed Brave started using 100% of my CPU from time to time (that’s damn 400W of electricity), I tried restarting both PC and browser couple of times but problem kept coming back after couple of hours, today i figured out i can use Brave built in Task Manager. I found out there is recurring task that keeps spaming hundreds of “Dedicated Workers” doing “cloudflare challenges”, from what i know its some kind of new captcha that instead of wasting my time decided to waste bit over 5kWh of electricity…

How do i stop spam of cloudflare challenge workers? Is there any way to see what is keep reopening those tasks?
It worked fine for over 2 years, I didn’t change anything recently

**Expected result: You guys add some warning that points to tab that does it or atleast some warning about brave cpu usage being bit unusual? idk

**Brave Version 1.80.124

**Additional Information: I really dont like taste of mango juice

[289wk]

Adding 2 other similar reports:

‘Brave Ram Consuming Error’

‘Brave browser is taking about 70GB of RAM for me, sometimes more - #19 by DeadCrypto’:

“In task manager it will show 100% of cpu and 90+% of memory being used by brave”

[otherek]

I forgot to mention mine never goes above 6GB or RAM while actively using about 15 tabs

edit: I started geting those so either it got fixed or they added exactly what i asked for

[289wk]

@otherek

rCAPTCHA/reCAPTCHA ← Google
hCAPTCHA ← used by Cloudflare

hCAPTCHA related/Cloudflare Cops is/are involved with Brave Search.

I use a VPN. The Cloudflare Cops previously got in the way, every time that I used Brave Search Engine Operators in search criteria - example: news site:ie ← trying to see news articles re Ireland. But lately, I have not encountered that Cloudflare problem.

In the following, I am suggesting in general, your further exploration . . .

Observing the Brave Browser > Developer Tools > Network window, a “Cloudflare frenzy” of repeatedly [looping] trying to get satisfaction, might stir up some of what you find: CPU.

I have seen the Cloudflare Cops tenaciously hanging on for “I don’t know exactly what” sometimes, before / during / after checking one of their “Are you a bot?” -type checkboxes. And I wonder, if you leave that window / tab and try another, then several Cloudflare processes may keep gnawing away?

Sometimes, I monitor:

Example (of nothing strange happening), using an older Mac, older BB version; combined screenshots of BB > Task Manager (upper) and Apple’s Activity Monitor (lower). You can match the PID numbers. I had only 2 BB Private Windows open. Not using: Brave Rewards, Brave Sync, Brave Talk, or any of the Brave specials (ie not much of any background activity). Internet connection is Wi-Fi > VPN (not Brave’s):

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PS. You seem to be using a VPN chain - 2 VPN services.

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Maybe something like the following, is a cause:

Cloudflare’s Turnstile - an excerpt:

When a bot is detected, Turnstile uses “proof of work” to instruct the browser to waste computer resources, for example by executing useless code on the CPU or filling up memory in an attempt to reduce the number of requests emitted per second by each physical machine running a bot.

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Also, maybe a (wild guess):

Codecache WASM (JavaScript V8) activity thing:
‘Brave continuously creating too many temp files - #6 by 289wk’

PREFETCH thing:
‘Brave continuously creating too many temp files - #18 by 289wk’

PAK file thing:
‘Brave continuously creating too many temp files - #25 by 289wk’