diff options
Diffstat (limited to 'UPDATING')
-rw-r--r-- | UPDATING | 15 |
1 files changed, 0 insertions, 15 deletions
@@ -16,21 +16,6 @@ from older versions of FreeBSD, try WITHOUT_CLANG and WITH_GCC to bootstrap to the tip of head, and then rebuild without this option. The bootstrap process from older version of current across the gcc/clang cutover is a bit fragile. -NOTE TO PEOPLE WHO THINK THAT FreeBSD 11.x IS SLOW: - FreeBSD 11.x has many debugging features turned on, in both the kernel - and userland. These features attempt to detect incorrect use of - system primitives, and encourage loud failure through extra sanity - checking and fail stop semantics. They also substantially impact - system performance. If you want to do performance measurement, - benchmarking, and optimization, you'll want to turn them off. This - includes various WITNESS- related kernel options, INVARIANTS, malloc - debugging flags in userland, and various verbose features in the - kernel. Many developers choose to disable these features on build - machines to maximize performance. (To completely disable malloc - debugging, define MALLOC_PRODUCTION in /etc/make.conf, or to merely - disable the most expensive debugging functionality run - "ln -s 'abort:false,junk:false' /etc/malloc.conf".) - 20160622: The libc stub for the pipe(2) system call has been replaced with a wrapper which calls the pipe2(2) system call and the pipe(2) is now |