[lttng-dev] Userspace RCU VS spin locks

[Mathieu Desnoyers]

----- Original Message -----
> From: "Evgeniy Ivanov" <lolkaantimat at gmail.com>
> To: lttng-dev at lists.lttng.org
> Sent: Wednesday, October 30, 2013 9:11:47 AM
> Subject: [lttng-dev] Userspace RCU VS spin locks
> 
> Hi,
> 
> I'm very interested in RCU performance, especially applied to hash
> tables (rculfhash in particular). Did any body compare performance of
> QSBR or signal RCU VS scalable and non-scalable spin locks?
> 

Hi Evgeniy,

You'll probably want to start by looking at my Linux Plumbers slides presenting rculfhash:

https://www.efficios.com/lpc2011-urcu

Also, Paul McKenney's slides of the Userspace RCU tutorial here present other numbers of a hash table example (including bucket-locks), AFAIK using his own statically sized hash table implementation (not rculfhash):

https://events.linuxfoundation.org/sites/events/files/slides/userspace-rcu-tutorial-linuxcon-2013.pdf

Thanks,

Mathieu



> --
> Cheers,
> Evgeniy
> 
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-- 
Mathieu Desnoyers
EfficiOS Inc.
http://www.efficios.com