Re: FreeBSD 5.3-STABLE, SMP und Ports kompilieren

From: Marian Hettwer <MH(at)>
Date: Thu, 24 Feb 2005 14:51:54 +0100 (CET)

On Do, 24.02.2005, 14:35, Daniel Graupner sagte:
> Marian Hettwer schrieb:
>>options PREEMPTION
> Wo hast du diese Option her? Ich kann die nicht in den NOTES finden?
> Klingt vom Name her ja interessant 8-), aber was bewirkt diese Option
> genau?
mhettwer(at)siteop-8$ grep -C4 PREEMPTION /sys/conf/NOTES

# SMP Debugging Options:
# PREEMPTION allows the threads that are in the kernel to be preempted
# by higher priority threads. It helps with interactivity and
# allows interrupt threads to run sooner rather than waiting.
# WARNING! Only tested on alpha, amd64, and i386.
# FULL_PREEMPTION instructs the kernel to preempt non-realtime kernel
# threads. It sole use is to expose race conditions and other
# bugs during development. Enabling this option will reduce
# performance and increase the frequency of kernel panics by
# design. If you aren't sure that you need it then you don't.
# Relies on the PREEMPTION option. DON'T TURN THIS ON.

man beachte, dass FULL_PREEMPTION keine so gute Idee zu sein scheint ;)

Beste Grüße,

PS.: Sorry, hab mich vorhin in meinem Squirrelmail verirrt und nur auf
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Received on Thu 24 Feb 2005 - 14:53:00 CET

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