3 ms·
Have you forgotten about Meltdown, Spectre, and all the other cache attacks?
by barrkel 7y ago
Have you forgotten about Meltdown, Spectre, and all the other cache attacks?
- de_watcher 7y agoIt's one of the two phases. We're back to the other one, wait for a couple of months.
- maxdamantus 7y agoThese are things that kernel developers are surely mindful of when coming up with and implementing eBPF functionality. Regardless, I'm sure I've run this same test years ago and seen the system call count still in the same order (that is, a couple of million per second). I really doubt Spectre mitigations are what are causing what should be a few dereferences and function calls to take around a thousand clock cycles.