On Tue, Nov 27, 2012 at 11:02 AM, Jeff Shaw <shawjef3@gmail.com> wrote:

Once each minute, a thread of my program updates a global state, stored in an IORef, and updated with atomicModifyIORef', based on query results via HDBC-obdc.

Incidentally, what kind of database are you talking to? Issues of FFI correctness aside, HDBC is in general terribly slow compared to some of the more DB-specific bindings.