Benchmarking Mercury As The "Fastest Firefox Fork" With AVX, AES, LTO + PGO

Written by Michael Larabel in Storage on 22 August 2023 at 11:55 AM EDT. Page 4 of 4. 29 Comments.
Selenium benchmark with settings of Benchmark: Kraken, Browser: Firefox. Firefox 118.0a1 was the fastest.
Selenium benchmark with settings of Benchmark: Kraken, Browser: Firefox. Firefox 118.0a1 was the fastest.
Selenium benchmark with settings of Benchmark: Kraken, Browser: Firefox. Firefox 118.0a1 was the fastest.

Lastly with the Kraken results there still wasn't any real change from Firefox to Mercury. The only change with Kraken was with Firefox 118 where there was a nice improvement in the performance. Firefox 118 looks like it will be a nice upgrade on the performance front.

CPU Power Consumption Monitor benchmark with settings of Phoronix Test Suite System Monitoring.
CPU Usage (Summary) Monitor benchmark with settings of Phoronix Test Suite System Monitoring.

Not only was Firefox 118 often running faster than prior Firefox versions, but it was also generally consuming less power and showing to utilize less of the CPU than prior Firefox releases across the range of benchmarks conducted. The Mercury CPU usage and power consumption was similar to Firefox 115.0.2 for which it was derived.

So at least for my testing using a modern AMD Ryzen 9 7950X system with Ubuntu Linux, I am not seeing any real benefits out of the Mercury browser. For what it's worth with the Mercury performance page it notes the tests were done on an AMD FX-8370 era system so perhaps with much older hardware there may be better luck. In any event those wishing to learn more about Mercury can do so at thorium.rocks.

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Michael Larabel

Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter, LinkedIn, or contacted via MichaelLarabel.com.