https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99105
--- Comment #10 from Martin Liška <marxin at gcc dot gnu.org> --- > From the perf it seems that simply the syscall overhead plays important > role (about 20% at kernel side, plus 9% on glibc side) followed by some > stupidness of opensuse setup - apparmor and btrfs. And please remeasure with the AppArmor disabled. It may slow down each I/O-related syscall rapidly!
