title: gdb memory usage for huge coredumps
body: <p>When opening a coredump with gdb, will gdb try to load the full coredump into memory?</p>
  
  <p>I've found a coredump with a size of 35Gb on one of our staging systems. Our operating instructions call for the creation of a backtrace using gdb. I'm afraid gdb will try to load the full coredump into memory and render the staging area unusable by using up all available memory.</p>
  
  <p>We're using gdb 7.0.1 on a RedHat EL 5 / 64bit installation.</p>