On 3/27/19 10:00 AM, Zi Yan wrote: > I ask this because I observe that migrating a list of pages can > achieve higher throughput compared to migrating individual page. > For example, migrating 512 4KB pages can achieve ~750MB/s > throughput, whereas migrating one 4KB page might only achieve > ~40MB/s throughput. The experiments were done on a two-socket > machine with two Xeon E5-2650 v3 @ 2.30GHz across the QPI link. What kind of migration? If you're talking about doing sys_migrate_pages() one page at a time, that's a world away from doing something inside of the kernel one page at a time.
