Re: Overview of concurrency managed workqueue

[Tejun Heo]

Hello,

On 06/19/2010 11:15 AM, Andi Kleen wrote:
>> Well, in general, queueing to execution latency should be fairly low
>> especially if it's put at the front of the queue but well it's nothing
>> with any kind of guarantee.
> 
> This is not a hard real time situation with a hard deadline,
> just "ASAP"
> 
>> I'm currently writing a kthread wrapper which basically provides
>> similar interface to wq but guarantees binding to a specific thread
>> which can be RT of course.  If single threadedness is acceptable, I
>> think this would render better behavior.  What do you think?
> 
> I think I would prefer simply high priority, but normal work item.
> 
> Otherwise we have the thread hanging around all the time 
> and on a large system it's still only a single one, so
> it'll never scale.

Hmmm... yeah, adding it isn't hard.  I'm just a bit skeptical how
useful it would be.  Having only single user would be a bit silly.
Can you think of anything else which could benefit from high priority
queueing?

Thanks.

-- 
tejun
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