7.1RC1: system hang

[Guy Helmer]

Paul B. Mahol wrote:
> On 12/12/08, Guy Helmer <ghelmer at palisadesys.com> wrote:
>   
>> Paul B. Mahol wrote:
>>     
>>> On 12/12/08, Guy Helmer <ghelmer at palisadesys.com> wrote:
>>>
>>>       
>>>> I have a recurring hang on FreeBSD 7.1 roughly-RC1 (releng_7_1 checkout
>>>> as of 2008-12-08) on a dual-CPU hyperthreaded Xeon i386.  I've dropped
>>>> into the kernel debugger on the VGA console and transcribed the
>>>> following information (if I omit anything critical, let me know -- the
>>>> machine is still sitting at the debugger prompt) :
>>>>
>>>>  > where
>>>> pid 20 tid 100018 td 0xc45008c0
>>>> kdb_enter_why
>>>> scgetc
>>>> sckdbevent
>>>> kdbmux_intr
>>>> kdbmux_kdb_intr
>>>> taskqueue_run
>>>> taskqueue_swi_giant_run
>>>> ithread_loop
>>>> fork_exit(c063cce0, c44ac590, e4a36d38) at 0xc063a624 = fork_exit+0x94
>>>> fork_trampoline() at 0xc07e41a0 = fork_trampoline+0x8
>>>>
>>>>  > show allpcpu
>>>> cpuid 0 in idle
>>>> cpuid 1: proc 23457
>>>> cpuid 2: idle
>>>> cpuid 3: swi6 proc 20
>>>>
>>>>         
>>> what is proc 23457?
>>>
>>>       
>> proc 23457 is "filter", an Autonomy KeyView Filter API program (extracts
>> text out of various document formats) that is being run using FreeBSD 6
>> compatibility libraries.
>>
>> Guy
>>
>>
>>     
>
> Could you give most interesting part of "ps" output.
>   
I've hooked up a serial console and I'll wait for the problem to occur 
again to to get the "ps" output -- there's about 70 active processes on 
the system, and transcribing from the VGA console is taking forever...

Guy