On 4/1/19 10:08 PM, Brian Goetz wrote: > There's another reason to avoid these writes, besides CDS optimizations: > do-nothing writes generate > useless card mark activity.
Not for primitive stores, like hash code. But you can construct a funny workload where storing zero hash code would false-share with something important. I think CDS is the major use case here, and it is a legit one. -Aleksey
