4 ms·

Does that mean -another- slight performance drop ???

• mjevans 9y ago
  It means the only secure system is one where the performance of any given instruction is constant in all cases for that instruction.
  • tempestn 9y ago
    A system like that would certainly be secure against these types of attacks, but I don't believe there is evidence that that is the only secure system. It certainly opens up many of these sorts of problems, but that just means it is difficult to secure, not impossible.
• tialaramex 9y ago
  Not in general. Consider an Olympic 100 metre sprinter. Today we time this event very accurately, I think it's to one hundredth of a second, using sophisticated technology. But even if the judges used a much less accurate mechanical stopwatch, Usain Bolt wouldn't actually be slower, we'd just be less confident of how ridiculously fast he is. In some special cases, timing things very accurately might be essential to a use of Javascript, but I can't think of any examples off the top of my head.
  • make3 9y ago
    gotta get that sweet rollover effect right to the 24th decimal baby