For pure computational cases Meltdown vulnerability remediation might not impact you as much. Meltdown fixes would affect applications that do a lot of syscalls

For pure computational cases Meltdown vulnerability remediation might not impact you as much. Meltdown fixes would affect applications that do a lot of syscalls - lots of socket IO, IPC stuff, small and frequent disk IO ops etc. You'll probably see a wide variety of benchmark results anything from no impact to things like above. So just make sure you measure carefully with your own workload.