Benchmarking The Performance Impact Of Linux 5.15's Newest Protection Around Side Channel Attacks
Written by Michael Larabel in Software on 3 September 2021 at 09:05 AM EDT. Page 2 of 5. 13 Comments.
For Linux gamers, there wasn't any observed performance penalty from running the ZERO_CALL_USED_REGS-enabled kernel build.
In a majority of the benchmarks ran, the performance difference was indeed flat or less than 1%.
Even in database tests there wasn't any measurable difference.