Re: [dpdk-dev] [PATCH v7 0/4] examples: add performance-thread

["Kulasek, TomaszX" <tomaszx.kulasek@intel.com>]

> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Ian Betts
> Sent: Thursday, December 3, 2015 17:21
> To: dev@dpdk.org
> Cc: Betts, Ian
> Subject: [dpdk-dev] [PATCH v7 0/4] examples: add performance-thread
> 
> This patchset comprises a layer 3 forwarding derivative intended to
> facilitate characterization of performance with different threading models,
> specifically:-
> 
> 1. EAL threads running on different physical cores 2. EAL threads running
> on the same physical core 3. Lightweight threads running in an EAL thread
> 
> Purpose and justification
> 
> Since dpdk 2.0 it has been possible to assign multiple EAL threads to a
> physical core ( case 2 above ).
> Currently no example application has focused on demonstrating the
> performance constraints of differing threading models.
> 
> Whilst purpose built applications that fully comprehend the DPDK single
> threaded programming model will always yield superior performance, the
> desire to preserve ROI in legacy code written for multithreaded operating
> environments  makes lightweight threads (case 3 above) worthy of
> consideration.
> 
> As well as aiding with legacy code reuse, it is anticipated that
> lightweight threads will make it possible to scale a multithreaded
> application with fine granularity allowing an application  to more easily
> take advantage of headroom on EAL cores, or conversely occupy more cores,
> as dictated by system load.
> 
> To explore performance with lightweight threads a simple cooperative
> scheduler subsystem is being included in this example application.
> If the expected benefits and use cases prove to be of value, it is
> anticipated that this lightweight thread subsystem would become a library
> in some future DPDK release.
> 
> Changes in this version
>  * fix copyright dates
> 
> Ian Betts (4):
>   doc: add sample application guide for performance-thread
>   examples: add lthread subsystem for performance-thread
>   examples: add l3fwd-thread example in performance-thread
>   examples: add pthread_shim example to performance thread
> 
--
> 2.1.4

Series Acked-by: Tomasz Kulasek <tomaszx.kulasek@intel.com>