Date: Sat, 21 Apr 2012 04:19:56 -0400 From: Arnaud Lacombe <lacombar@gmail.com> To: freebsd-stable <freebsd-stable@freebsd.org>, FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: Complete hang on 9.0-RELEASE Message-ID: <CACqU3MXcvT=nQrrJn6cyKY3vB76gkz1PGR2fCy%2Bip_2uJ-NkoQ@mail.gmail.com> In-Reply-To: <CACqU3MWSyr_toZcOvQrNpLxX=ytNyDfDxpVKxxhC3%2BBACO6HPw@mail.gmail.com> References: <CACqU3MUefo4mG3GdZnj6kxxFx4H_M3-NLys8pCKptqNU4r_ywA@mail.gmail.com> <CACqU3MWx5S-v4jya2JEtT6d=9TOXcyR_Do8yybBY8%2Bkg16HpxA@mail.gmail.com> <CACqU3MWSyr_toZcOvQrNpLxX=ytNyDfDxpVKxxhC3%2BBACO6HPw@mail.gmail.com>
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Hi, On Wed, Apr 18, 2012 at 2:22 AM, Arnaud Lacombe <lacombar@gmail.com> wrote: > Hi, > > On Mon, Apr 16, 2012 at 5:50 PM, Arnaud Lacombe <lacombar@gmail.com> wrote: >> [...] >> I reproduced the previous problem on 10-CURRENT from r233917, on the >> following platform (here running 8.2-RELEASE): >> >> FreeBSD is a registered trademark of The FreeBSD Foundation. >> FreeBSD 8.2-RELEASE #0: Thu Feb 17 02:41:51 UTC 2011 >> root@mason.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC amd64 >> Timecounter "i8254" frequency 1193182 Hz quality 0 >> CPU: Intel(R) Atom(TM) CPU D525 @ 1.80GHz (1800.01-MHz K8-class CPU) >> Origin = "GenuineIntel" Id = 0x106ca Family = 6 Model = 1c Stepping = 10 >> Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE> >> Features2=0x40e31d<SSE3,DTES64,MON,DS_CPL,TM2,SSSE3,CX16,xTPR,PDCM,MOVBE> >> AMD Features=0x20100800<SYSCALL,NX,LM> >> AMD Features2=0x1<LAHF> >> TSC: P-state invariant >> real memory = 2136539136 (2037 MB) >> avail memory = 2043772928 (1949 MB) >> ACPI APIC Table: <010312 APIC0947> >> FreeBSD/SMP: Multiprocessor System Detected: 4 CPUs >> FreeBSD/SMP: 1 package(s) x 2 core(s) x 2 HTT threads >> cpu0 (BSP): APIC ID: 0 >> cpu1 (AP/HT): APIC ID: 1 >> cpu2 (AP): APIC ID: 2 >> cpu3 (AP/HT): APIC ID: 3 >> >> Complete system freeze while running about 2400 threads. I had to >> power cycle the system to get it back alive. I discussed a way to >> debug this with attilio@ on freebsd-stable@, but still did not had >> time to implement it. >> > 10-CURRENT from r233917 hanged again today while running 3600 threads. > I enabled WITNESS and INVARIANTS on that specific kernel, secretly > hoping that they would trigger some meaningful information, but they > did not. I would guess my last attempt is to enable SW_WATCHDOG, and > gather some state information out of DDB when the watchdog trigger, if > it does... > > Btw, this issue seems to be specifically happening on Atom/ICH8M > platform running amd64 kernel, as I've never seen it on other > platforms, and yet ran extensive tests. I am not entirely sure it > happens on i386. I would need to check. > For the record, 9.0-RELEASE i386 has been running the test for about 2 days on the D510 platform without any hang so far. I'll keep it running all week-end to give me a better idea. - Arnaud
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