There are stats in "stats items" / "stats slabs". Last access time for most recent eviction per slab class, etc. (see doc/protocol.txt from the tarball). "watc

There are stats in "stats items" / "stats slabs". Last access time for most recent eviction per slab class, etc. (see doc/protocol.txt from the tarball). "watch evictions" command will also show a stream of details for items being evicted.