Linux Systems Running Newer Kernels Not Really Affected by Meltdown Patches

According to some recent benchmarks done by a user on some Linux systems running newer kernel versions on a particular network-heavy load, the recently released Linux 4.15 kernel appears to be between 7 and 9 percent faster than Linux kernel 4.11. But if the new KPTI (Kernel Page-Table Isolation) patches that mitigate the recently discovered Meltdown security vulnerability are enabled on the Linux 4.15 kernel, then the performance is just 1 or 2 percent slower than on systems running Linux kernel 4.11.