Hi there, I am in the process of speeding up communication between a server and its clients. Communication involves serialized class data. Messages can be as large as 100 kilobytes. I have done some measurements which have shown that, in a cluster with Gigabit networking, most overhead of the parallelisation seems to come from the Broker infrastructure and the process of (de-)serialization. Network latency and/or bandwidth seems to play only a minor role in this environment. Hence, apart from optimizing my broker, I'm looking for ways to optimize the serialization process, as used in my application. As messages are discarded as soon as they reach the recipient, versions of serialized data do not play an important role. Apart from decreasing the frequency and size of data exchanges and using binary transfers in a homogeneous environment, another way of speeding up the application seems to be the "Class Information" section discussed e.g. in http://www.boost.org/doc/libs/1_41_0/libs/serialization/doc/special.html . Also, BOOST_IS_BITWISE_SERIALIZABLE(my_class) might help. One question I have about this is whether a std::vector<POD> would be accessible to this optimization ? I use quite a few of them. Do you have further suggestions for ways of influencing the Boost.Serialization library ? Thanks and Best Regards, Ruediger