Date: Fri, 22 Jul 2005 01:46:37 +0100 (BST) From: Robert Watson <rwatson@FreeBSD.org> To: Andrey Chernov <ache@FreeBSD.ORG> Cc: current@FreeBSD.ORG Subject: Re: rl(4) is not ready for mpsafenet net enough? (silent reboots) Message-ID: <20050722014551.G16902@fledge.watson.org> In-Reply-To: <20050722004021.GB1415@nagual.pp.ru> References: <20050721134816.GA8550@nagual.pp.ru> <20050722011556.T16902@fledge.watson.org> <20050722004021.GB1415@nagual.pp.ru>
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On Fri, 22 Jul 2005, Andrey Chernov wrote: > On Fri, Jul 22, 2005 at 01:17:52AM +0100, Robert Watson wrote: >> coverage, it's not necessarily a locking problem. Out of curiousity, >> if you take "options PREEMPTION" out, but leave debug.mpsafenet=1, do >> things change? > > I don't have "options PREEMPTION". Is it good to have? It's in GENERIC, so I assumed you were running with it unless you otherwise documented it as part of your bug report. PREEMPTION is good to have, as it dramatically lowers the latency in processing interrupts when running kernel-intensive workloads. Robert N M Watson
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