Proposed 6.2 em RELEASE patch

Scott Long scottl at
Mon Nov 13 05:15:50 UTC 2006

Mike Tancsa wrote:
> At 11:05 PM 11/12/2006, Scott Long wrote:
>> Mike Tancsa wrote:
>>> However, if I turn on fastforwarding, its back to the old behavior 
>>> with it locking up.  This was with the stock driver. I will try the 
>>> same test with
>>> #define EM_FAST_INTR 1
>>> as well as taking out the nfs option from the kernel driver.  
>>> Anything else to tune with ?
>>>         ---Mike
>> Would you mind going so far as to adding NO_ADAPTIVE_MUTEXES?  This is
> Wow, it totally survives 2 streams (2 in one direction or 2 in opposite 
> directions)... AND it almost can survive a 3rd! It does seem to be 
> dropping packets on em1 when I add in a second stream blasting in the 
> same direction, but its survives.  You can see at ** I add in the second 
> stream, and the outbound on em1 drops, even though more packets are 
> going through.  I stop the second stream then add a stream going in the 
> other direction.  Oddly enough, with a UP kernel it cant do 2 streams, 
> just the one.  I thought the extra locking on SMP would make it worse ?  
> In this case it seems no.

Is this with EM_INTR_FAST enabled also?


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