Date: Thu, 13 Oct 2011 13:36:05 +0200 From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@des.no> To: Alexander Motin <mav@FreeBSD.org> Cc: current@freebsd.org Subject: Re: 9 hangs with idletick = 0 Message-ID: <86lispaztm.fsf@ds4.des.no> In-Reply-To: <86botmjf7p.fsf@ds4.des.no> ("Dag-Erling =?utf-8?Q?Sm=C3=B8rg?= =?utf-8?Q?rav=22's?= message of "Wed, 12 Oct 2011 19:24:10 %2B0200") References: <86bou59gpf.fsf@ds4.des.no> <4E83186C.4080707@FreeBSD.org> <86botmjf7p.fsf@ds4.des.no>
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Dag-Erling Sm=C3=B8rgrav <des@des.no> writes: > I've just built a kernel with KTR support, and with KTR_SPARE2, KTR_INTR > and KTR_SCHED enabled by default. I'll see what turns up. I'm also > going to try machdep.idle=3Dhlt with kern.eventtimer.idletick=3D0, and us= ing > a PCI re(4) instead of the on-board msk(4) while running with default > settings. Great, the bug does not occur when KTR is enabled. The machine has been up for 14+ hours without crashing, despite plenty of network activity, which usually triggers a freeze within minutes. It looks like there may still be short freezes (a few seconds at a time). I'm thinking of instrumenting fetch(1) to record any instances of fread() taking more than, say, half a second. DES --=20 Dag-Erling Sm=C3=B8rgrav - des@des.no
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