Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.programming.threads > #2755 > unrolled thread

About the distributed reader-writer mutex

Back to article view | Back to comp.programming.threads

Contents

  About the distributed reader-writer mutex Ramine <ramine@1.1> - 2014-12-07 13:32 -0800
    Re: About the distributed reader-writer mutex Ramine <ramine@1.1> - 2014-12-07 13:45 -0800

#2755 — About the distributed reader-writer mutex

Hello,

http://www.1024cores.net/home/lock-free-algorithms/reader-writer-problem/distributed-reader-writer-mutex


I have just done a calculation on small reader sections using the 
Amdahl's law(like when you are parallelizing Red Black trees or AVL 
trees)  using this distributed reader-writer mutex above using an rwlock 
using the GetCurrentProcessorNumber() of windows, and i have compared it 
to Seqlock, at 4 cores  the Seqlock has 15 times speed throughput of the 
distributed reader-writer mutex above, at 8 cores
the Seqlock has 4 times the speed throughtput of  the distributed 
reader-writer mutex above, at 16 cores the Seqlock has 2 times the speed 
throughtput of the distributed reader-writer mutex above,
at 32 cores the Seqlock has the same speed throughput as the distributed 
reader-writer mutex above.


So Seqlock and my scalable distributed reader-writer lock are
much faster on small reader section than the distributed reader-writer 
mutex above.



Thank you,
Amine Moulay Ramdane,

[toc] | [next] | [standalone]

#2756

Hello...


This calculation was done on read-mostly scenarios.


Thank you,
Amine Moulay Ramdane.

[toc] | [prev] | [standalone]

Back to top | Article view | comp.programming.threads

csiph-web