Re: does mhonarc do a directory listing?

Great, that is a possible performance enhancement for the future, as
very large directories can be slow to read, even when totally cached
by Linux. For the immediate term, I'll talk with the aufs folks to see
if directory reads can get faster.

$ time ls -U > /dev/null   # cached

real    0m1.471s
user    0m0.530s
sys     0m0.940s