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

Groups > comp.programming.threads > #1763

Re: About my Scalable distributed Lock...

Cross-posted to 2 groups.

Show all headers | View raw

Hello,


You can download my scalable distributed Lock version 1.0 from:

http://pages.videotron.com/aminer/


Thank you,
Amine Moulay Ramdane.


On 9/30/2013 12:13 PM, aminer wrote:
>
> Hello,
>
>
> We have to be very carefull, i have benchmaked my Scalable distributed Lock
> version 1.1, and i have noticed that since it uses a Ticket mechanism it
> doesn't scale, the problem with the Ticket mechanism is that it has a
> poor performance cause in the case of a spinlock without tickets when it
> is unlocked() the first thread that comes first to the lock() will enter
> immediatly the locked section, but that's not the case with a Ticket
> spinlock cause if the first thread that enters the lock() first has not
> the ticket to enter, the other thread that have the ticket to enter and
> that is waiting for his turn will wait longer/more, if there is
> also context switches it will wait longer,  so this is why the Ticket
> spinlock has a poor performance compared to a simple spinlock with a
> backoff, so i have decided to return back my scalable distributed Lock
> version 1.0, the version 1.0 doesn't use a ticket mechanism but it
> is much fair that the Windows critical section , other than that
> i have benchmarked the Windows critical section and i have noticed that
> it doesn't scale well , my scalable distributed Lock scales much better
> , also my scalable distributed Lock spins on local variable so it reduces
> the cache misses and it reduces the cache-coherence traffic, the Windows
> critical section spins on a local variable so it's less efficient than
> my scalable distributed Lock.
>
>
>
> Thank you,
> Amine Moulay Ramdane.
>
>
>
>
>
>

Back to comp.programming.threads | Previous | Next — Previous in thread | Next in thread | Find similar

Thread

About my Scalable distributed Lock... aminer <aminer@toto.net> - 2013-09-30 12:13 -0700
  Re: About my Scalable distributed Lock... aminer <aminer@toto.net> - 2013-09-30 12:17 -0700
  Re: About my Scalable distributed Lock... aminer <aminer@toto.net> - 2013-09-30 12:20 -0700

csiph-web