5.x SLOW - How do I speed it up?
slave-mike at slavepix.com
Tue Jan 27 18:18:44 PST 2004
What are all the options one needs to change before doing a
to make sure all the debugging features are off?
> NOTE TO PEOPLE WHO THINK THAT FreeBSD 5.x IS SLOW:
> FreeBSD 5.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.
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