@ Yichao Yu - thank you for the response. That clears things up a bit. Does this also imply that there is no performance penalty incurred by mmap'ing a persisted file as opposed to a non-persisted file?
On Saturday, March 19, 2016 at 8:38:20 AM UTC-4, Yichao Yu wrote: > > > It appears that the disk-file backed SharedArray is syncing to the file > on > > every write/update to the array - am I mistaken about this (I'm not > > suggesting it is a problem, just want to ensure I'm clear)? > > If you are talking about sync'ing to the OS cache, yes, and that's why > other process can see it. If you are talking about sync'ing to disk > then no, not even most normal file IO do that. >
