ULE/SCHED_SMP diff for 7.0

[Jeff Roberson]

On Wed, 18 Jul 2007, Rene Ladan wrote:

> Jeff Roberson schreef:
>>
>> On Wed, 18 Jul 2007, Rene Ladan wrote:
>>
>>> Jeff Roberson schreef:
>>>> http://people.freebsd.org/~jeff/ule.diff
>>>>
>>>> This patch is scheduled for inclusion in 7.0.  I would like anyone who
>>>> cares to run it to validate that it does not create any stability or
>>>> performance regression over the existing ULE.  This patch replaces ULE
>>>> with SCHED_SMP, which will now no longer exist as a seperate fork of
>>>> ULE.
>>> [..]
>>>
>>> I cvsupped this evening at 19:34 UTC.  The new ULE scheduler works fine
>>> in single-user mode (it survives "make kernel"), but when I go to
>>> multi-user mode I get a "sched_add: trying to run inhibited thread"
>>> panic (2 vmcores lost due to fsck :( )
>>
>> Can you get me a backtrace?  You can enable KDB and DDB in your kernel
>> along with INVARIANTS.  Just type 'tr' and record the function names
>>
>
> I found a file #165060 in /var/lost+found .  kgdb didn't eat it, but strings
> could still extract the attached backtrace.  In case you want to recompile
> the kernel, it is compiled with -O1 -pipe -march=prescott
> -fno-strict-aliasing

Can you run gdb kernel.debug from your compile directory.  Then type:

list *(sched_switch+0x26e)

I need to know the line number of that call.

Thanks,
Jeff

>
>
> Regards,
> Rene
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