Mercury - a Firefox work with compiler optimizations
I was looking for a non-chromium alternative browser to Firefox and found mercury. According to this site [https://scribe.rip/@mihirgrand/comparing-popular-firefox-forks-6fa83fdfdaad] it is one of the fastest Firefox forks and also has optimizations from other well known forks like librewolf.
It is based off ESR but the flags are really cool!
You can build Firefox yourself, takes like 30min on a modern Laptop.
I did that to remove the jemalloc memory allocator, to make it work on Secureblue
Just havent found how to compile regular Releases yet.
The developer included furry porn art as part of the code base of his other browser project, Thorium. He removed it after it was discovered.
from another user in this thread
github.com/Alex313031/Mercury/blob/…/mozconfig
You can likely use Mozillas documentation to optimize your Firefox that way
Claims 7-10% performance improvement on an old AMD FX thing. No information about the baseline though; whether it’s the terrible Snap or Firefox’s official binary package. I suspect it’s the former because it has known performance issues IIRC and the latter has quite good compiler optimisations already (LTO+PGO making most of the difference).
When I built Firefox for x86_64-v3, I saw no measurable improvement over x86_64-v1 in speedometer.
What of those are unsafe?
Everything involving -O3. That usually stands for “enable all standards-compliant compiler optimisations, no matter how how little their benefit or their stability”.
What would be even worse would be -Ofast which won’t even care about strict standards compliance. No sane distributor distributes -Ofast and the only distributor I’d trust to use -O3 correctly is Intel’s Clear Linux.
I don’t know about OPT_LEVEL but it’s likely an abstraction of the build system for this flag.
Tried this myself, performance differences are non existent. In fact I noticed more regressions on speedometer than implements.
Don’t bother, use Floorp instead.
vojel
Pantherina
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wopazoo [he/him]
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