4 ms·

Interesting that only Google and FB seem to have noticed this. Is it not a problem for AWS or Azure?

• monocasa 5y ago
  It is. But being a statistical thing, it's rare for an individual small customer to hit. Probably more rare than running your own servers since they're cared for well.
  • rejectedandsad 5y ago
    Plausible. If it is for one of the new AMD instances as someone else in the comments theorized I don't think they're heavily used by Amazon internally.
    • monocasa 5y ago
      It's a more prevalent problem at smaller nodes, but it's a general hyperscale problem. Modern datacenter CPUs are simply too complex to fully validate without increasing the cost so much that you're not competitive any more. Hyperscaling is very an exercise in thinking probabilistically. Everything fails without telling you, and that needs to be accounted for. It sort of approaches synthetic biology that way.
• anfilt 5y ago
  I highly doubt its only google or fb who deal with this. It can even be a problem with a single machine depending on the environment. Like I was messing around with a simple circuit on a bread board. One of the ICs had a schimit trigger and just the EMI from being on a bread board consistently would cause my desktop computer near by to lock up. There is all sort of spurious noise from cosmic to man made that has the potential to screw up a chips operation Heck even a dip in power for a few micro seconds could cause issues, and most UPS use a mechanical relay that takes milliseconds to kick in ect... All though any decent PSU should have enough filtering capacitance to filter out such a short event
  • BenjiWiebe 5y ago
    Well with AC power you get zero crossings anyways. If you can't survive a microsecond without power, don't use AC.