profiler VS uBlock-issues

Probably your best bet is to use the Firefox Profiler once it starts hogging the CPU to try to see what it's doing. I'd be happy to take a look at the result although I don't have a lot of experience at diagnosing performance problems; hopefully the profile will make it obvious what's going on.

I tried using the https://profiler.firefox.com/ and running with:

You can try to reproduce while taking a profile using the Firefox profiler, then share it in the #perf:mozilla.org room on Mozilla's Matrix instance.

Run a profiling session for ~30 sec when you notice something is running slower than you expect, see https://profiler.firefox.com/. Share results here if you want help interpreting them.

Next time, send a SIGABRT to the main process (kill -6 $(pidof firefox)) and use the resulting backtrace (you will find a link to the crash report in about:crashes) to file a bug. A performance profile could be useful, but you'll need to know first what to capture. This seems like a graphics issue, so try the Graphics preset. Share a link to your report.

https://profiler.firefox.com will be useful if you can capture and share it to developers.

If you can reproduce it in safe mode and a clean profile, capture a performance profile using the clean profile while trying to load a problematic webpage, don't remove any information from it, and share it here (although it's typically not easy for users to analyse them), or file a bug with it attached.

Next time, capture a performance profile using the Graphics preset, and kill the browser by entering kill -6 $(pidof firefox) in a shell. This will create a bug report (unless debian disables the crash reporter) that would indicate where Firefox is stuck at. You might need to use an official build to get useful results.

There is an open issue for this: https://github.com/uBlockOrigin/uBlock-issues/issues/2786 uBO should report such filter as en error in Firefox, so that is the thing to fix.

This would be the price of one of the four CDNs (6000$ per month): https://github.com/uBlockOrigin/uBlock-issues/discussions/2958

opened a bug report https://github.com/uBlockOrigin/uBlock-issues/issues/3003

Current estimated cost for just ONE of uBO's CDNs: HERE. This is with other lists updating every few days. uBO's not a company, it's a volunteer project using free services, which have limits that we cannot cross.

The extension with the best success rate seems to be **uBlock Origin**. It is a community driven project with a team of volunteers, you can review the source code [here](https://github.com/gorhill/uBlock). You will need to update your filter lists regularly, this because Youtube changes detection methods daily. Here is how you do that:

Definitely a much-needed area for development. However, having gone down the browser extension rabbit hole, I've largely shifted my focus to user scripts. Granted, there will always be a need for specialized browser extensions like ad blockers (uBlock[1]), keyboard shortcuts (Vimium-C[2]), and password managers (Bitwarden[3]).

That said, I find user scripts superior for most tasks, despite some lacking UI niceties. They are easier to share, use, and crucially, audit—be it in terms of scope, permissions, or code updates. Plus if Manifest V3 is any indicator, the future for browser extensions looks bleak. While I don't agree with this direction, it's probably for the best for the majority of users, like my mom.

Your effort is commendable; however, should you find yourself looking for a viable pivot in the future, I believe the user script space is primed for innovation and could offer a good alternative.

[1] https://github.com/gorhill/uBlock

const defineProperty = function(chain, cValue, middleware = undefined) { let aborted = false; const mustAbort = function(v) { if ( aborted ) { return true; } aborted = (v !== undefined && v !== null) && (cValue !== undefined && cValue !== null) && (typeof v !== typeof cValue); return aborted; }; // https://github.com/uBlockOrigin/uBlock-issues/issues/156 // Support multiple trappers for the same property. // // trapProp is used to trap a single property within an object. const trapProp = function(owner, prop, configurable, handler) { if ( handler.init(owner[prop]) === false ) { return; } const odesc = Object.getOwnPropertyDescriptor(owner, prop); let prevGetter, prevSetter; if ( odesc instanceof Object ) { if ( odesc.configurable === false ) { return; } if ( odesc.get instanceof Function ) { prevGetter = odesc.get; } if ( odesc.set instanceof Function ) { prevSetter = odesc.set; } } Object.defineProperty(owner, prop, { configurable, //When a property is accessed (get), the custom getter function is called. get() { if ( prevGetter !== undefined ) { prevGetter(); } return handler.getter(); // cValue }, // When a property is modified (set), the custom setter function is called. set(a) { if ( prevSetter !== undefined ) { prevSetter(a); } handler.setter(a); } }); }; // trapChain is used to recursively trap properties along a chain of properties (e.g., object1.object2.property). const trapChain = function(owner, chain) { const pos = chain.indexOf('.'); if ( pos === -1 ) { trapProp(owner, chain, true, { v: undefined, init: function(v) { if ( mustAbort(v) ) { return false; } this.v = v; return true; }, getter: function() { return cValue; }, setter: function(a) { // Middleware is called when a property is set, allowing additional processing or validation of the new value. if (middleware instanceof Function) { cValue = a; middleware(a); } else { if ( mustAbort(a) === false ) { return; } cValue = a; } } }); return; } const prop = chain.slice(0, pos); const v = owner[prop]; chain = chain.slice(pos + 1); if ( v instanceof Object || typeof v === 'object' && v !== null ) { trapChain(v, chain); return; } trapProp(owner, prop, true, { v: undefined, init: function(v) { this.v = v; return true; }, getter: function() { return this.v; }, setter: function(a) { this.v = a; if ( a instanceof Object ) { trapChain(a, chain); } } }); }; trapChain(window, chain); }

Maybe https://github.com/uBlockOrigin/uBlock-issues/issues/2725 ?