OR-Library is a collection of test data sets for a variety of OR problems.
A full list of the test data sets available in OR-Library can be found here.
There are currently 4 data files. Files dea1 and dea2 contain data from J.E.Beasley "Comparing university departments" Omega 18 (1990) 171-183. File dea3 contains data from R.D.Banker and R.C.Morey "The use of categorical variables in data envelopment analysis" Management Science 32 (1986) 1613-1627. File dea4 contains data from R.G.Dyson and E.Thanassoulis "Reducing weight flexibility in data envelopment analysis" Journal of the Operational Research Society 39 (1988) 563-576. The format of these data files is apparent from the tables of data given in the above references. The entire set of files is of size 10Kb (approximately).
Click here to access these files