On Sun, Nov 22, 2009 at 3:36 AM, Mike Hommey <mh+notmuch@glandium.org> wrote: > A good test, if you have enough memory, would be to put your mailbox in > a tmpfs, and see how fast that imports. (Oops, forgot to reply to the list.) I don't see any function calls related to I/O on the call graph. But, here is one that looks I/O bound: notmuch tag -unread tag:inbox I have my home directory on an encfs volume and I see it and notmuch competing for CPU when viewing "top". -Brett.