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Re: I was asked a question by Chris Thomasson 1

From	Ramine <ramine@1.1>
Newsgroups	comp.programming.threads, comp.programming
Subject	Re: I was asked a question by Chris Thomasson 1
Date	2014-06-14 12:49 -0700
Organization	A noiseless patient Spider
Message-ID	<lni8t7$403$1@dont-email.me> (permalink)
References	<lnaflc$gbg$4@news.albasani.net> <lnag6l$hm7$2@news.albasani.net> <lni5fa$5aq$1@speranza.aioe.org>

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On 6/14/2014 11:49 AM, Chris M. 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?

This is not general, when writes and reads happen to the same
memory locations(that's the same for harddisk)  RCU can not run writes 
and reads in parallel.

Also i was speaking about read mostly scenarios, i think
on read mostly scenarios the difference between RCU and my 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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I was asked a question by Chris Thomasson 1 aminer <aminer@toto.net> - 2014-06-11 04:54 -0700
  Re: I was asked a question by Chris Thomasson 1 aminer <aminer@toto.net> - 2014-06-11 05:03 -0700
    Re: I was asked a question by Chris Thomasson 1 "Chris M. Thomasson" <no@spam.invalid> - 2014-06-14 11:49 -0700
      Re: I was asked a question by Chris Thomasson 1 Ramine <ramine@1.1> - 2014-06-14 12:37 -0700
      Re: I was asked a question by Chris Thomasson 1 Ramine <ramine@1.1> - 2014-06-14 12:49 -0700

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