3 ms·
Correct but you’d also still have that drag just from the kernel dirtying those caches in the first place. But I was clarifying because the wording could be ta
by vlovich123 6mo ago
Correct but you’d also still have that drag just from the kernel dirtying those caches in the first place.
But I was clarifying because the wording could be taken as data/instruction cache and there generally isn’t a full flush of that just to enter/leave kernel.
- slashdev 6mo agoYes, that’s right. It seems to make up the bulk of the cost of a system call though, depending what it does, like read or write syscalls.