Hartmut Kaiser writes:

Our measurements show Boost.Serialization spends most of its time creating (constructing) archives and there it's mainly initializing the locale...

That seems a little different from what I've been testing. The test looks like this: filebuf fb; fb.open("ofile", ios_base::out); binary_oarchive oa(fb); clock_t start(clock()); oa << lst; clock_t end(clock()); The time to construct an oarchive is not included in the test. -- Brian Wood Ebenezer Enterprises http://www.webEbenezer.net