4 ms·

More recent, larger-scale studies with modern hardware showed about a 3% chance of a DIMM having an error in a given year: http://www.cs.toronto.edu/~bianca/pap

More recent, larger-scale studies with modern hardware showed about a 3% chance of a DIMM having an error in a given year: http://www.cs.toronto.edu/~bianca/papers/sigmetrics09.pdf http://www.cs.toronto.edu/~bianca/papers/sigmetrics09.pdf But these weren't just cosmic-ray-induced errors. The DIMMs with errors were far more likely to have more errors in the future, pointing to faulty memory cells.

tyingq 5y ago
Where are you getting the 3 percent chance? Is that per DIMM, per machine? How does that align with these passages? "About a third of all machines in the fleet experience at least one memory error per year" "The median number of errors per year for those machines that experience at least one error ranges from 25 to 611."
- nieve 5y ago
  "Across the entire fleet, 1.3% of machines are affected by uncorrectable errors per year, with some platforms seeing as many as 2-4% affected" is enough to worry me.
  - tyingq 5y ago
    Ah, "uncorrected". That leaves "corrected", which only happens for ECC machines, correct?