Re: ULE status, invalid load, buildkernel times.

On Sun, 22 Jul 2007, Chris Dionissopoulos wrote:

> Hello Jeff,
>
> Sunday, July 22, 2007, 3:55:08 AM, you wrote:
>
>> I have a patch available at:
>
>> http://people.freebsd.org/~jeff/ulehtt.diff
>
>> This resolves issues in the code that handles HTT enabled processors and
>> also adds some ULE information to bootverbose on SMP systems.  Peter Wemm
>> has a seperate patch that fixes a bug where some amd64 cpus were still
>> being misidentified as HTT.  Those of you with invalid loads either have
>> Hyper-threading CPUs or misidentified amd cores.  You should expect
>> slightly poorer performance as long as your cores are misidentified but
>> the bad loads should be fixed.
>
>> I also believe that the buildkernel/world times are now significantly
>> improved.  If this is not the case for you please send a mail.  Any other
>> performance data is appreciated.
>
>> Thanks,
>> Jeff
>
> Load numbers seem correct, but, when enabling powerd(8) for power
> management I get kernel panic! In detail:

Hi Chris,

Can you tell me is there a panic message or is it a trap?  Can you run 
with INVARIANTS and WITNESS without WITNESS_SKIPSPIN?  I appreciate the 
detailed problem matrix.

Thanks,
Jeff

>
> -without patch, powerd(8) and system working stable (20+ daemons),
> -with patch applied and disabling powerd(8), system working stable (a
> couple of hours)
> -with patch applied and trying to enable powerd(8) produces kernel panic from
> powerd(8) process.
>
> It seems something ugly using scheduling lives in powerd(8).
>
>
> info:
> =====
> Copyright (c) 1992-2007 The FreeBSD Project.
> Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
>        The Regents of the University of California. All rights reserved.
> FreeBSD is a registered trademark of The FreeBSD Foundation.
> FreeBSD 7.0-CURRENT #5: Sun Jul 22 09:26:23 EEST 2007
>    root_at_mail.debug.gr:/usr/obj/usr/src/sys/DEV7
> ACPI APIC Table: <INTEL  DG965SS >
> Timecounter "i8254" frequency 1193182 Hz quality 0
> CPU: Intel(R) Core(TM)2 CPU          6300  _at_ 1.86GHz (1876.00-MHz 686-class CPU)
>  Origin = "GenuineIntel"  Id = 0x6f6  Stepping = 6
>  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=0xe3bd<SSE3,RSVD2,MON,DS_CPL,VMX,EST,TM2,SSSE3,CX16,xTPR,PDCM>
>  AMD Features=0x20100000<NX,LM>
>  AMD Features2=0x1<LAHF>
>  Logical CPUs per core: 2
> real memory  = 2120540160 (2022 MB)
> avail memory = 2069549056 (1973 MB)
> FreeBSD/SMP: Multiprocessor System Detected: 2 CPUs
> cpu0 (BSP): APIC ID:  0
> cpu1 (AP): APIC ID:  1
>
>
> # sysctl -a | grep topo
> kern.sched.topology: 1
>
>
>
> -- 
> Best regards,
> Chris                            mailto:dionch_at_freemail.gr
>