A long time ago, "set use-deprecated-index-sections on" improved some things; don't know if any modern compilers need that anymore. I also have a "disable prett

A long time ago, "set use-deprecated-index-sections on" improved some things; don't know if any modern compilers need that anymore. I also have a "disable pretty-printer global builtin" in my ~/.gdbinit, though I don't recall what that was for, or if I even determined that to improve speed. Currently it seems "set style sources off" reduces some startup time. Don't think I've debugged anything your scale though, and I doubt any of my suggestions will actually help.