Initial Benchmarks Of The Performance Impact Resulting From Linux's x86 Security Changes Written by Michael Larabel in Software on 2 January 2018 at 06:35 PM EST. Page 2 of 2. Add A Comment. First up are some synthetic I/O benchmarks... FS-Mark performance appears to be significantly slower with this latest Linux kernel Git code, at least when using faster storage as found with the Core i7 8700K s