Benchmarks Of JCC Erratum: A New Intel CPU Bug With Performance Implications On Skylake Through Cascade Lake

Another one of the workloads seeing a sizable impact from the JCC erratum MCU is the web browser performance:

In this case the assembler update didn't make any difference as Firefox wasn't rebuilt from source as part of the test profile or the Clear Linux revision. The Firefox impact to performance is quite apparent from these tests. I'll have more Firefox/Chrome microcode tests up in the days ahead.