> Restarting the service will drop all the memmapped caches, cassandra caches > are saved / persistent and you can also use memcachd if you want.
Well, the OS won't evict everything from page cache just because the last process to map them exits. That said, since restarts tend to have secondary effects on caches like streaming through all the bf and index files, restarts are certainly detrimental to the page cache. Also you may still see some eviction (even if it doesn't *necessarily* happen) depending (particularly if not running with numactl set to interleave). -- / Peter Schuller (@scode on twitter)
