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Re: About Lockfree...

Cross-posted to 2 groups.

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I wrote:
 > so what i will advice is to wrap those push() and pop() of your FIFO
 > queue with a Lock that supports FIFO fairness and that lower the
 > cache-coherence traffic, this is better i think, so you can use for 
example
 > the Scalable Anderson Lock , the scalable MCS Lock or my scalable
 > distributed Lock for that , those Locks are FIFO fair and  better for
 > realtime systems.


And it's better to use two Locks , one for the push() and one for the pop().


Thank you,
Amine Moulay Ramdane.




On 10/7/2013 8:07 PM, aminer wrote:
>
> Hello,
>
> We have to be smart please, there are those that
> like Lockfree algorithms, but in my opinion those
> lockfree algorithms have an important weakness, in high contention
> scenarios they  will higher the cache-coherence traffic
> so they will slow the things, in worst scenarios you can
> have 1+2+3+4+ ..N = ((N^2+N)/2) or even worse N+N+N+N...N = N^2
> cache lines transfers from the memory and this is not good at all,
> so what i will advice is to wrap those push() and pop() of your FIFO
> queue with a Lock that supports FIFO fairness and that lower the
> cache-coherence traffic, this is better i think, so you can use for example
> the Scalable Anderson Lock , the scalable MCS Lock or my scalable
> distributed Lock for that , those Locks are FIFO fair and  better for
> realtime systems.
>
>
>
> Thank you,
> Amine Moulay Ramdane.
>
>

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About Lockfree... aminer <aminer@toto.net> - 2013-10-07 20:07 -0700
  Re: About Lockfree... aminer <aminer@toto.net> - 2013-10-07 20:14 -0700
  Re: About Lockfree... aminer <aminer@toto.net> - 2013-10-07 20:35 -0700

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