Re: portupgrade und make brauchen zu viel CPU

From: Martin Wilke <miwi(at)freebsd.org>
Date: Fri, 12 Oct 2007 11:02:44 +0200

On Fri, 12 Oct 2007 09:50:00 +0200 (CEST)
Oliver Fromme <olli(at)lurza.secnetix.de> wrote:

|Den Debugger solltest Du schon drinlassen, damit Du im
|Notfall wenigstens einen Stacktrace, ein ps o.. machen
|kannst. Das Vorhandensei des Debuggers hat keinerlei
|Einfluss auf die Systemperformance.

OMG :-)

NOTE TO PEOPLE WHO THINK THAT FreeBSD 8.x IS
SLOW: FreeBSD 8.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.

-- 
Martin Wilke		| irc.unixfreunde.de #bsd 
miwi(at)FreeBSD.org	| miwi(at)unixfreunde.de
FreeBSD Committer	| Power to Serve

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Received on Fri 12 Oct 2007 - 11:03:51 CEST

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