Andiry Xu

Dead lock contention for DAX-mmap page fault with snapshot taking

1

Reproduce steps: Run whisper vacation workload, then take a snapshot. Root cause: We do not allow DAX-COW page fault during snapshot taking. It will wait for snapshot taking finished. Process...

I would like to take a look at how NUMA affects NOVA performance. i.e. will it improve performance if we allocate NVMM from the local NUMA node?

Currently each file write grabs the inode lock. Refine lock granularity to improve performance for concurrent writes.