scheduler (sched_4bsd) questions

[Julian Elischer]

Julian Elischer wrote:

>>
>>
>> Great news ! - I actually switched target machines just when this
>> started to happen and thought the cdrom of the new target was bad and
>> disconnected it ;-)
>>
>> I reconnected it this morning and did a little debugging.
>> Looks like an interrupt race condition in the ata code.
>> Can you try the following patch?
>>
>
> awsome!
> ----------------
> ad0: 9541MB <ST310211A/3.39> [19386/16/63] at ata0-master UDMA100
> ATAPI_RESET time = 50us
> acd0: CDROM <CDU5211/YYS2> at ata1-master PIO4
> Mounting root from ufs:/dev/ad0s1a
> ------------------
>
> notice there is still a single reset message, that doesn't appear 
> without PREEMPTION
> but now boots take less than 5 minutes :-) 


I stand corrected.. the message does appear with no preemption.
(I was certain that it didn't but.. I can't argue with my eyes..)


>
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