[Haskell-cafe] Priority queue benchmarks

I've started working on performance of the venerable but somewhat neglected pqueue package. The changes I've made so far are pretty obviously good, and make a big difference in even the most informal testing. But to make decisions about smaller points, I really need benchmarks, and the package has none. Does anyone know of a benchmark suite for priority queues? One that includes algorithms that involve persistent queue use would be particularly desirable, but I'll take anything.