Performance horrors

[Ross Paterson]

On Tue, Aug 26, 2008 at 06:32:40PM +0100, Adrian Hey wrote:
> 2- Data.Set is not obviously the best underlying implementation (in
> fact it is obviously not the best underlying implementation, this and
> Data.Map etc really should be pensioned off to hackage along with the
> rest of the badly documented, unreliable, inefficient and unstable
> junk :-)

Do you have benchmarks to quantify how bad Data.Set and Data.Map are?