Core i7 anyone else?

[Takanori Watanabe-2]

Hi, I recently bought Core i7 machine(for 145,000JPY: about $1500)
and sometimes hangs up oddly.
When in the state, some specific process only works and
replys ping, but not reply any useful information.

I suspect it may caused by CPU power management, so I cut
almost all CPU power management feature on BIOS parameter.

Are there any people encouterd such trouble?
And on this machine build world in SCHED_ULE(15min.) is slower
than SCHED_4BSD(12min.).


===dmesg===
http://www.init-main.com/corei7.dmesg
or
http://pastebin.com/m187f77aa
(if host is down)

=====DSDT====
http://www.init-main.com/corei7.asl
or
http://pastebin.com/m6879984a

==some sysctls==
hw.machine: i386
hw.model: Intel(R) Core(TM) i7 CPU         920  @ 2.67GHz
hw.ncpu: 8
hw.byteorder: 1234
hw.physmem: 3202322432
hw.usermem: 2956083200
hw.pagesize: 4096
hw.floatingpoint: 1
hw.machine_arch: i386
hw.realmem: 3211264000
==
machdep.enable_panic_key: 0
machdep.adjkerntz: -32400
machdep.wall_cmos_clock: 1
machdep.disable_rtc_set: 0
machdep.disable_mtrrs: 0
machdep.guessed_bootdev: 2686451712
machdep.idle: acpi
machdep.idle_available: spin, mwait, mwait_hlt, hlt, acpi,
machdep.hlt_cpus: 0
machdep.prot_fault_translation: 0
machdep.panic_on_nmi: 1
machdep.kdb_on_nmi: 1
machdep.tsc_freq: 2684011396
machdep.i8254_freq: 1193182
machdep.acpi_timer_freq: 3579545
machdep.acpi_root: 1024240
machdep.hlt_logical_cpus: 0
machdep.logical_cpus_mask: 254
machdep.hyperthreading_allowed: 1
==
kern.sched.preemption: 0
kern.sched.topology_spec: <groups>
 <group level="1" cache-level="0">
  <cpu count="8" mask="0xff">0, 1, 2, 3, 4, 5, 6, 7</cpu>
  <flags></flags>
 </group>
</groups>

kern.sched.steal_thresh: 3
kern.sched.steal_idle: 1
kern.sched.steal_htt: 1
kern.sched.balance_interval: 133
kern.sched.balance: 1
kern.sched.affinity: 1
kern.sched.idlespinthresh: 4
kern.sched.idlespins: 10000
kern.sched.static_boost: 160
kern.sched.preempt_thresh: 0
kern.sched.interact: 30
kern.sched.slice: 13
kern.sched.name: ULE
===
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[Jeremy Chadwick-3]

On Wed, Nov 19, 2008 at 08:44:03PM +0900, Takanori Watanabe wrote:

> Hi, I recently bought Core i7 machine(for 145,000JPY: about $1500)
> and sometimes hangs up oddly.
> When in the state, some specific process only works and
> replys ping, but not reply any useful information.
>
> I suspect it may caused by CPU power management, so I cut
> almost all CPU power management feature on BIOS parameter.
>
> Are there any people encouterd such trouble?
> And on this machine build world in SCHED_ULE(15min.) is slower
> than SCHED_4BSD(12min.).
>
>
> ===dmesg===
> http://www.init-main.com/corei7.dmesg
> or
> http://pastebin.com/m187f77aa
> (if host is down)
>
> =====DSDT====
> http://www.init-main.com/corei7.asl
> or
> http://pastebin.com/m6879984a
>
> ==some sysctls==
> hw.machine: i386
> hw.model: Intel(R) Core(TM) i7 CPU         920  @ 2.67GHz
> hw.ncpu: 8
> hw.byteorder: 1234
> hw.physmem: 3202322432
> hw.usermem: 2956083200
> hw.pagesize: 4096
> hw.floatingpoint: 1
> hw.machine_arch: i386
> hw.realmem: 3211264000
> ==
> machdep.enable_panic_key: 0
> machdep.adjkerntz: -32400
> machdep.wall_cmos_clock: 1
> machdep.disable_rtc_set: 0
> machdep.disable_mtrrs: 0
> machdep.guessed_bootdev: 2686451712
> machdep.idle: acpi
> machdep.idle_available: spin, mwait, mwait_hlt, hlt, acpi,
> machdep.hlt_cpus: 0
> machdep.prot_fault_translation: 0
> machdep.panic_on_nmi: 1
> machdep.kdb_on_nmi: 1
> machdep.tsc_freq: 2684011396
> machdep.i8254_freq: 1193182
> machdep.acpi_timer_freq: 3579545
> machdep.acpi_root: 1024240
> machdep.hlt_logical_cpus: 0
> machdep.logical_cpus_mask: 254
> machdep.hyperthreading_allowed: 1
> ==
> kern.sched.preemption: 0
> kern.sched.topology_spec: <groups>
>  <group level="1" cache-level="0">
>   <cpu count="8" mask="0xff">0, 1, 2, 3, 4, 5, 6, 7</cpu>
>   <flags></flags>
>  </group>
> </groups>
>
> kern.sched.steal_thresh: 3
> kern.sched.steal_idle: 1
> kern.sched.steal_htt: 1
> kern.sched.balance_interval: 133
> kern.sched.balance: 1
> kern.sched.affinity: 1
> kern.sched.idlespinthresh: 4
> kern.sched.idlespins: 10000
> kern.sched.static_boost: 160
> kern.sched.preempt_thresh: 0
> kern.sched.interact: 30
> kern.sched.slice: 13
> kern.sched.name: ULE
> ===

When building world/kernel, do you see odd behaviour (on CURRENT) such
as the load average being absurdly high, or processes (anything; sh,
make, mutt, etc.) getting stuck in bizarre states?  These things are
what caused my buildworld/buildkernel times to increase (compared to
RELENG_7).  I was using ULE entirely (on CURRENT and RELENG_7), but
did not try 4BSD.  I documented my experience.

http://wiki.freebsd.org/JeremyChadwick/Bizarre_CURRENT_experience

I have no idea if your problem is the same as mine.  This is purely
speculative on my part.  (And readers of that Wiki article should
note that the problem was not hardware-related)

--
| Jeremy Chadwick                                jdc at parodius.com |
| Parodius Networking                       http://www.parodius.com/ |
| UNIX Systems Administrator                  Mountain View, CA, USA |
| Making life hard for others since 1977.              PGP: 4BD6C0CB |

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[Ivan Voras-7]

Takanori Watanabe wrote:

> Hi, I recently bought Core i7 machine(for 145,000JPY: about $1500)
> and sometimes hangs up oddly.
> When in the state, some specific process only works and
> replys ping, but not reply any useful information.
>
> I suspect it may caused by CPU power management, so I cut
> almost all CPU power management feature on BIOS parameter.
>
> Are there any people encouterd such trouble?
> And on this machine build world in SCHED_ULE(15min.) is slower
> than SCHED_4BSD(12min.).

I don't know but this:

> ===dmesg===
> http://www.init-main.com/corei7.dmesg
> or
> http://pastebin.com/m187f77aa
> (if host is down)

CPU: Intel(R) Core(TM) i7 CPU         920  @ 2.67GHz (2684.00-MHz
686-class CPU)
  Origin = "GenuineIntel"  Id = 0x106a4  Stepping = 4

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=0x98e3bd<SSE3,DTES64,MON,DS_CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,SSE4.1,SSE4.2,POPCNT>
  AMD Features=0x28100000<NX,RDTSCP,LM>
  AMD Features2=0x1<LAHF>
  Cores per package: 8
  Logical CPUs per core: 2
real memory  = 3211264000 (3062 MB)
avail memory = 3143983104 (2998 MB)
ACPI APIC Table: <7522MS A7522100>
FreeBSD/SMP: Multiprocessor System Detected: 8 CPUs
 cpu0 (BSP): APIC ID:  0
 cpu1 (AP): APIC ID:  1
 cpu2 (AP): APIC ID:  2
 cpu3 (AP): APIC ID:  3
 cpu4 (AP): APIC ID:  4
 cpu5 (AP): APIC ID:  5
 cpu6 (AP): APIC ID:  6
 cpu7 (AP): APIC ID:  7

is a bit in conflict with this:

> kern.sched.topology_spec: <groups>
>  <group level="1" cache-level="0">
>   <cpu count="8" mask="0xff">0, 1, 2, 3, 4, 5, 6, 7</cpu>
>   <flags></flags>
>  </group>
> </groups>

From what I know of its architecture i7 has hyperthreading - i.e. the
CPU has 4 "real" cores which are hyperthreaded, so you get 8 cores
total. It probably also includes a different way of enumerating its
topology which might have caused wrong topology detection and your
slowdown in buildworld. (the CPU also has L3 cache, but I think it's not
looked up in topology detection).

I don't know it this particular error could be responsible for your
lockups - probably not. The CPU also introduces some big changes in
power management (dynamic powerdown of individual cores) which could
cause them - but I can't help you there.

Are you sure it's not something trivial like overheating?