Efficient Virtual Memory for Big Memory Servers (isca13_direct_s...

Efficient Virtual Memory for Big Memory ServersABSTRACTOur analysis shows that many “big-memory” server workloads, such as databases, in-memory caches, and graph analytics, pay a high cost for page-based virtual memory. They consume as much as 10% of execution cycles on TLB misses, even using large pag- es. On the other hand, we find that these workloads use read-write permission on most pages, are provisioned not to swap, and rarely benefit from the full flexibility of page-based virtual m