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Re: About RCU...

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On 6/14/2014 1:06 PM, Ramine wrote:
>
> Chris Thomasson wrote:
>  >IMVHO, you do not seem understand why RCU beats a non-asymmetric
>  >rw-lock. Besides that, how can you compare RCU with a read-write mutex
>  >when RCU allows reads and writes to occur concurrently?
>
>  >Can a write proceed when a read is in progress in any of your rw-mutex
>  >algos?
>
>
> That's not true in general, RCU uses some technics that permit
> parallelism like a write proceed when reads are in progrogress, but
> the RCU technic don't apply to the general cases, if you are
> writing and reading to multiple memory addresses and they are conflicts,
> that means you are writing to many same memory addresses so
> RCU will not run a write and reads in parallel...
>
> And i think on read mostly scenarios the difference between RCU and my


I mean the difference on performance of course.


> scalable RWLocks are small, cause my scalable RWLocks are scalable on
> read mostly scenarios , they scale even at 3% of writes.
>
>
>
> Thank you,
> Amine Moulay Ramdane.

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About RCU... Ramine <ramine@1.1> - 2014-06-14 13:06 -0700
  Re: About RCU... Ramine <ramine@1.1> - 2014-06-14 14:28 -0700

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