[paulsutter]

It's curious that there's low bandwidth utilization despite the low but rates / cpu stalled waiting for memory. Don't you think?

Perhaps random access of small data causes frequent waits without utilizing the bandwidth in a way that block copies would.

[jharsman]

You don't get high bandwidth utilization by pointer chasing unless you have many threads doing it and you switch threads while waiting on memory. That's true for GPUs, not for typical server workloads running on CPUs.