TSP on em makes send of streams very slow

[Kris Kennaway]

Jack Vogel wrote:
> On 9/22/07, Artem Kuchin <matrix at itlegion.ru> wrote:
>>> TSO is for some environments, it isn't gonna be useful at 100Mb
>>> (which you are), it can be useful at 1Gb but not always, when you get
>>> to 10G its
>>> a HUGE benefit.
>>>
>>> Just cuz you can shoot yourself in the foot doesn't mean the gun has a
>>> problem :)
>> But wait, i did not shoot myself. I have been shot by the driver w/o any
>> preliminary warning. TSO4 was enabled by DEFAULT (i did not enable it),
>> so anybody can be in my place if used the same driver on the similar hardware
>> (which is plenty).
>>
>> So, i think this is a problem which really need to be addressed.
> 
> It is on by default because it the majority of cases its a benefit, you
> found it to be a problem and turned it off, your problem is solved.
> 
> I admit, at one point I considered disabling it automatically for anything
> under Gig speed, but a large community has used this driver with this
> feature for over a year, no one has lobbied to have to disabled, so I
> have not.
> 
> If there are others who think this would be a good idea, speak up, and
> I will do so.
> 
> Cheers,
> 
> Jack
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> 

Something is clearly going very wrong for performance to be that bad, so 
I think you need to work out why that is happening.  Is it a problem 
with that particular card model, or what?

Kris