Date: Tue, 16 Mar 2004 17:48:49 +0100 From: Wilko Bulte <wkb@freebie.xs4all.nl> To: John Baldwin <jhb@FreeBSD.org> Cc: alpha@FreeBSD.org Subject: Re: Testers Needed!! Message-ID: <20040316164849.GA71626@freebie.xs4all.nl> In-Reply-To: <200403161059.04115.jhb@FreeBSD.org> References: <200403121543.03123.jhb@FreeBSD.org> <20040315231809.GA39847@freebie.xs4all.nl> <20040316065710.GA68934@freebie.xs4all.nl> <200403161059.04115.jhb@FreeBSD.org>
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On Tue, Mar 16, 2004 at 10:59:04AM -0500, John Baldwin wrote: > On Tuesday 16 March 2004 01:57 am, Wilko Bulte wrote: > > uma_zalloc_arg() at uma_zalloc_arg+0x418 > > swp_pager_meta_build() at swp_pager_meta_build+0x148 > > swap_pager_putpages() at swap_pager_putpages+0x380 > > default_pager_putpages() at default_pager_putpages+0x1c > > vm_pageout_flush() at vm_pageout_flush+0x1e0 > > panic: pmap_emulate_reference(0xfffffc001fdc0290, 0x1606f8000, 1, 0): pa > > 0x0 not > > managed > > at line 2573 in file ../../../alpha/alpha/pmap.c > > cpuid = 0; > > panic > > Stopped at Debugger+0x38: zapnot v0,#0xf,v0 <v0=0x0> > > db> > > db> > > > > This was running a make -j32 > > This has been reported recently on the list w/o preemption, so I don't think > preemption is the problem here. The specific problem I saw with preemption > on the past only happened on SMP and was a hard hang. The DS20 I was using > never lasted more than a day doing a loop of buildworld -j 32 or so. In > fact, I don't think it even finished a -j 32 buildworld but I could be wrong > (it's been a while). UP never had problems, it is really the SMP case that > my extra changes address and that needs testing. This bug (pmap one) also > needs fixing, but I don't think it is preemption related and I'm not sure > what the bug is, though it appears maybe that you got a read fault on a page > that was just swapped out perhaps? Could be. The system has 1GB of RAM, dunno about the swap. I'll set the -j somewhat lower to see if it continus to run with less load. -- Wilko Bulte wilko@FreeBSD.org
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