From: Bruce Richardson <bruce.richardson@intel.com>
To: Vladyslav Buslov <Vladyslav.Buslov@harmonicinc.com>
Cc: Ferruh Yigit <ferruh.yigit@intel.com>,
"Pei, Yulong" <yulong.pei@intel.com>,
"Zhang, Helin" <helin.zhang@intel.com>,
"Wu, Jingjing" <jingjing.wu@intel.com>,
"dev@dpdk.org" <dev@dpdk.org>,
Nitin Kumar <Nitin.Kumar@harmonicinc.com>
Subject: Re: [dpdk-dev] [PATCH] net/i40e: add packet prefetch
Date: Thu, 6 Apr 2017 10:54:54 +0100 [thread overview]
Message-ID: <20170406095454.GB3564@bricha3-MOBL3.ger.corp.intel.com> (raw)
In-Reply-To: <MWHPR11MB1360CE19E327290BD5AEAB009D0D0@MWHPR11MB1360.namprd11.prod.outlook.com>
On Thu, Apr 06, 2017 at 09:29:12AM +0000, Vladyslav Buslov wrote:
> Ferruh,
>
> In our case patch significantly improves application performance. (~40% more PPS on load balancer core)
> Using DPDK examples I can only reproduce perf improvements with similar design apps like load_balancer.
> With applications that send on free packets on same core where they are received performance is not improved.
>
> It seems that this patch doesn't do anything(or even actually slightly degrades performance) for run-to-completion apps so we will have to continue maintaining it as part part of our internal branch.
>
> Regards,
> Vlad
>
Is it possible to get the same performance boost in your app, while
avoiding the perf hit in run-to-completion apps, by using a runtime,
rather than compile-time option?
/Bruce
next prev parent reply other threads:[~2017-04-06 9:54 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-03-01 10:56 Vladyslav Buslov
2017-03-07 10:37 ` Ferruh Yigit
2017-04-01 2:01 ` Pei, Yulong
2017-04-03 10:31 ` Ferruh Yigit
2017-04-06 9:29 ` Vladyslav Buslov
2017-04-06 9:54 ` Bruce Richardson [this message]
2017-04-03 10:47 ` Ananyev, Konstantin
2017-04-06 9:54 ` Bruce Richardson
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