Holger Kiehl wrote: > >> Most the time I compile my application without the -g option due to > >> performance reasons. > > > > The -g switch has absolutely no effect upon performance. It simply > > causes and additional section to be added to the resulting binary. > > When the program is run normally (i.e. not under gdb), that section > > won't be mapped. The only downside to -g is that it increases the size > > of the file. > > But when executing the program will it not read the whole binary which > is much larger with debug information and so will take longer (just the > first reading of the binary)? No. Binaries aren't "read", they're mapped (with mmap); pages are read into memory on demand. The loader only maps the sections which are actually required, which doesn't include the debug sections. -- Glynn Clements <glynn@xxxxxxxxxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe linux-c-programming" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
