From: "Kulasek, TomaszX" <tomaszx.kulasek@intel.com>
To: "Betts, Ian" <ian.betts@intel.com>, "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH v5 0/4] examples: add performance-thread
Date: Thu, 3 Dec 2015 09:48:27 +0000 [thread overview]
Message-ID: <3042915272161B4EB253DA4D77EB373A14E21E9F@IRSMSX102.ger.corp.intel.com> (raw)
In-Reply-To: <1449134905-28261-1-git-send-email-ian.betts@intel.com>
> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of ibetts
> Sent: Thursday, December 3, 2015 10:28
> To: dev@dpdk.org
> Cc: Betts, Ian
> Subject: [dpdk-dev] [PATCH v5 0/4] examples: add performance-thread
>
> From: Ian Betts <ian.betts@intel.com>
>
> 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
> * None
> Idenitical with the V4 patchset, which comprised 2 patches.
> V5 is divided into more 5 patches.
>
>
> 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>
prev parent reply other threads:[~2015-12-03 9:48 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-03 9:28 ibetts
2015-12-03 9:28 ` [dpdk-dev] [PATCH v5 1/4] doc: add sample application guide for performance-thread ibetts
2015-12-03 9:28 ` [dpdk-dev] [PATCH v5 2/4] examples: add lthread subsystem " ibetts
2015-12-03 16:31 ` Stephen Hemminger
2015-12-03 16:46 ` Bruce Richardson
2015-12-03 17:15 ` Betts, Ian
2015-12-03 9:28 ` [dpdk-dev] [PATCH v5 3/4] examples: add l3fwd-thread example in performance-thread ibetts
2015-12-03 16:32 ` Stephen Hemminger
2015-12-03 17:18 ` Betts, Ian
2015-12-03 9:28 ` [dpdk-dev] [PATCH v5 4/4] examples: add pthread_shim example to performance thread ibetts
2015-12-03 9:48 ` Kulasek, TomaszX [this message]
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