Hi, I have some (beginners) question about the example server3-porgram that ships with the library. It uses multiple threads with a single io_service. In the method server::run() this happens: std::vector<boost::shared_ptr<boost::thread> > threads; for (std::size_t i = 0; i < thread_pool_size_; ++i) { boost::shared_ptr<boost::thread> thread(new boost::thread(boost::bind(&boost::asio::io_service::run, &io_service_))); threads.push_back(thread); } for (std::size_t i = 0; i < threads.size(); ++i) threads[i]->join(); But when are the threads actually scheduled? Does this happen by the shared io_service? Are the registered callback methods for async_read, async_accept, etc executed in the threads? Also, are there any tradeoffs that I should know off for using the single io_service vs io_service-per-thread approach? Thank you, Andrej ___________________________________________________________ Yahoo! Mail is the world's favourite email. Don't settle for less, sign up for your free account today http://uk.rd.yahoo.com/evt=44106/*http://uk.docs.yahoo.com/mail/winter07.htm...