[nycbug-talk] latest blog
Sun Jul 17 10:51:03 EDT 2005
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On Sun, Jul 17, 2005 at 10:33:25AM -0400, Dru wrote:
Ah Dru, you touched one of recent pet peeves. Your blog quotes
"NOTE TO PEOPLE WHO THINK THAT FreeBSD 6.x IS SLOW:
FreeBSD 6.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
Then you speak of removing the options from the kernel.
My pet peeve is, would it have killed them to add to UPDATING, since each
time various people post to CURRENT and STABLE asking how to
do it, something like
"To disble malloc, if you choose to do so, do ln -s aj
The make cleanworld target is also not yet documented in
UPDATING--that's less of a peeve because you don't get three people
posting to STABLE and/or CURRENT each time, asking how to do it--because
they don't know about it.
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Willow: Oz is a werewolf.
Buffy: It's a long story.
Oz: Got bit.
Buffy: But obviously not that long.
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