Date: Thu, 15 Nov 2018 22:39:58 +0100 From: Andreas Tobler <andreast-list@fgznet.ch> To: Mark Millard <marklmi@yahoo.com>, Michael Tuexen <Michael.Tuexen@macmic.franken.de> Cc: Justin Hibbits <chmeeedalf@gmail.com>, FreeBSD PowerPC ML <freebsd-ppc@freebsd.org> Subject: Re: after running the installer on a PowerMac G5 no root filesystem found Message-ID: <020ce879-5486-acf6-98a2-b21a9dab3973@fgznet.ch> In-Reply-To: <F203DC22-FCA1-4633-87A7-E3BA8F8EB4DE@yahoo.com> References: <6f6d590b-02ef-ef9c-ed58-50121142e616@blastwave.org> <15F2B2EA-2129-46A8-BAAA-5AB8A9B6478B@macmic.franken.de> <806379E7-97EE-4977-B334-B3C53522F789@macmic.franken.de> <64612e49-7798-bf2a-44b6-56cfcd3b3e80@blastwave.org> <20181114110252.68fa2070@ralga.knownspace> <29EA3221-8788-4528-BEB2-AF38A9FF1D56@macmic.franken.de> <1635791e-6c4e-52f3-a5ad-739f1b143040@fgznet.ch> <F203DC22-FCA1-4633-87A7-E3BA8F8EB4DE@yahoo.com>
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On 15.11.18 21:47, Mark Millard wrote: > On 2018-Nov-15, at 12:13, Andreas Tobler <andreast-list at fgznet.ch> wrote: > >> On 15.11.18 21:05, Michael Tuexen wrote: >>>> . . . >>> OK, I did some testing. Reverting r334498 and not disabling smp results >>> in a usable, stable system. However, there are two things I observed that >>> are not working as good as with disabling smp: >>> 1. After a while the fans get louder. Running sysctl -a dev.fcu.0 >>> gets them down again. After a while they will start to get >>> louder again. >>> When SMP is disabled, this is not an issue. >> >> pmac_therm gets stuck, we already had that, r329080 tried to fix this. >> It worked a while but now things are back to worse. > > In my context somethings things go for weeks without > this happening. I also have more trouble with such from > debug kernel builds than from non-debug ones. I normally > run non-debug kernels unless I'm trying to track down > some issue. > > For non-debug kernels rebooting (shutdown -r now) does > seem to initially clear the condition. > > This has been a fairly long term issue. > >>> 2. When shutting down the system, >>> Waiting (max 60 seconds) for system thread `bufdaemon' to stop... >>> Waiting (max 60 seconds) for system thread `bufspacedaemon-1' to stop... >>> Waiting (max 60 seconds) for system thread `bufspacedaemon-0' to stop... >>> times out. >>> This is also not an issue when SMP is disabled. >>> So there are some issue with SMP even when reverting r334498. >> >> I second the two points above, iow I see the same on different SMP G5 running 64-bit. For me both are related. > > I've seen this and, as I remember, it has been under debug kernels > instead of non-debug ones. Since I normally run non-debug kernels, > I normally do not see this. > > The powerpc's involved are still based on -r339076. The prior > context with much use was long before that, predating -r334498 > as well. I do not remember seeing this before the jump to > -r339076 . > > So I expect this is somewhat new. > > > I can not comment much on having smp disabled. The only time > that I've had such was the jump to -r339076 until I identified > reverting -r334498 as how to get back to a nearly > historically-normal context. I usually run GENERIC64-NODEBUG and it is happening. I'm on r340261+, maybe I should allocate a weekend for bisecting once more :(
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