Carlos Camargo wrote: > > text data bss dec hex filename > 45880 1956 23544 71380 116d4 twothreads > > But, i don`t understand this information, when i use > man size don´t provide information about this format Try "info size" which is a little bit better. But basically, text==code, and data+bss==your program data. This totals 71380 bytes in this case (rather large for such a simple case, but easily reduced by tailoring your eCos configuration if you choose). For a program programmed into ROM/Flash, you would find the total ROM usage to be text+data, and the total RAM usage to be data+bss. Jifl -- Red Hat, Rustat House, Clifton Road, Cambridge, UK. Tel: +44 (1223) 271062 Maybe this world is another planet's Hell -Aldous Huxley || Opinions==mine Come to the Red Hat TechWorld open source conference in Brussels! Keynotes, techie talks and exhibitions http://www.redhat-techworld.com/