Re: FYI: head (12-CURRENT) -r308247 on old 466 MHzPowerMac G4 (1 processor/1 core): taskqgroup_adjust failed cnt: 1 stride: 1 mp_ncpus: 1 smp_started: 0

On 11/11/2016 09:40, Mark Millard wrote:
> When using head -r308247 to boot an old PowerMac G4 466 MHz (single processor/single core) there are two "taskqgroup_adjust failed cnt" messages:
>
>> # dmesg
>> Copyright (c) 1992-2016 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 12.0-CURRENT #0 r308247M: Thu Nov  3 11:39:11 PDT 2016
>>     markmi_at_FreeBSDx64:/usr/obj/powerpcvtsc_clang_gcc421_kernel/powerpc.powerpc/usr/src/sys/GENERICvtsc-NODBG powerpc
>> gcc version 4.2.1 20070831 patched [FreeBSD]
>> cpu0: Motorola PowerPC 7400 revision 2.9, 466.97 MHz
>> cpu0: Features 9c000000<PPC32,ALTIVEC,FPU,MMU>
>> cpu0: HID0 8094c0a4<EMCP,DOZE,DPM,EIEC,ICE,DCE,SGE,BTIC,BHT>
>> real memory  = 1588068352 (1514 MB)
>> avail memory = 1530961920 (1460 MB)
>> . . .
>> <OWC Mercury Electra 3G SSD 560ABBF0> ATA8-ACS SATA 2.x device
>> ada0: Serial Number <REPLACED>
>> ada0: 66.700MB/s transfers (UDMA4, PIO 512bytes)
>> ada0: 114473MB (234441648 512 byte sectors)
>> taskqgroup_adjust failed cnt: 1 stride: 1 mp_ncpus: 1 smp_started: 0
>> taskqgroup_adjust failed cnt: 1 stride: 1 mp_ncpus: 1 smp_started: 0
>> Trying to mount root from ufs:/dev/ufs/FBSDG4Srootfs [rw,noatime]...
>> gem0: link state changed to DOWN
>> gem0: link state changed to UP
>
> The above is repeatable for the indicated PowerMac, so far always at the same place in the sequence.
>
> The other booted PowerMac's using this SSD have multiple processors (G4 and G5 examples). None of them has reported such messages so far but those messages could be unrelated to the  processor count for all I know.
>
> This -r308247 build is "stable style" relative to performance choices for the KERNCONF. And the KERNCONF disables/excludes PS3 and enables/includes sc (syscons) in addition to the normal vt.
>
>
> I do warn that this is the environment were I experiment with the problematical-for-powerpc clang/clang++ 3.8.0 for buildworld. Build kernel is via gcc 4.2.1. The kernel has so-called "red zone" handling added for signals in order to deal with the clang ABI violations (in the stack handling).
>
> At some point when all the available llvm powerpc-target fixes are in place I'll switch to the 3.9.0 project if I can. (Similarly for powerpc64.)
>
> ===
> Mark Millard
> markmi at dsl-only.net
>
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>

I have the same messages (taskqgroup_adjust..) on an old Pentium 4 and 
and a (less) old Pentium M since current r302216 then stable/11 r303807 
(clang,etc)

The systems seem to run OK

Claude Buisson