Comment by jasonthorsness
4 months ago
huh TIL
"On modern Intel architectures, spatial prefetcher is pulling pairs of 64-byte cache lines at a time, so we pessimistically assume that cache lines are 128 bytes long."
4 months ago
huh TIL
"On modern Intel architectures, spatial prefetcher is pulling pairs of 64-byte cache lines at a time, so we pessimistically assume that cache lines are 128 bytes long."
That was true in like, 2011. I'm not sure if it's true anymore.
Pretty sure it started being a thing at Sandy Bridge and never stopped?
I don't think the impact on adjacent cache lines is as severe as it was on Sandy Bridge.