[Boost-users] posix_time io slow

I'm in the process of writing a logging library and I noticed that each call to print out ptime took about ~50us. Even just printing out the duration time_of_day cost ~20us. I'm using boost1.43 with g++ (GCC) 4.4.3 g++ -ftemplate-depth-128 -O3 -finline-functions -Wno-inline -Wall -pthread -DNDEBUG I was able to do the same thing for <1us not using stream ops (see code below). Does anyone care to optimize this stuff? I'm considering specializing my own boost::date_time::ostream_time_duration_formatter to override to slow impl. template<typename int_t> void printDecimal(int_t d,int places,char* out){ int_t rest=d; for(int i=0;i