Thanks to the presence of mind of Marcel Grünauer, the Perl community can easily see benchmarks for common Perl accessor packages with App::Benchmark::Accessors.

Here are the numbers on my MacBook Pro with 10.6:

# class_accessor              719424/s
# rubyish_attribute          1176471/s
# spiffy                     1342282/s
# class_spiffy               1388889/s
# class_accessor_fast        1428571/s
# class_accessor_complex     1449275/s
# class_accessor_constructor 1470588/s
# class_methodmaker          1550388/s
# moose                      1612903/s
# moose_immutable            1612903/s
# accessors                  1724138/s
# mojo                       1785714/s
# mouse_immutable            1941748/s
# mouse                      1960784/s
# class_accessor_classy      2000000/s
# class_accessor_fast_xs     3333333/s
# class_xsaccessor           3508772/s
# object_tiny_xs             3508772/s
# rose                       3571429/s
# class_xsaccessor_array     3921569/s

Glad to see Rose::Object (with Class::XSAccessor support) near the top of the list. That’s what I chose for Net::LDAP::Class, and I’ll be switching to that for the rest of my projects RSN.