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From: "Xu, Qian Q" <qian.q.xu@intel.com>
To: "De Lara Guarch, Pablo" <pablo.de.lara.guarch@intel.com>,
	"Qiu, Michael" <michael.qiu@intel.com>,
	"dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH] examples/l3fwd: increase lookup burst size to 8
Date: Fri, 24 Jul 2015 01:08:36 +0000	[thread overview]
Message-ID: <82F45D86ADE5454A95A89742C8D1410E01D911EF@shsmsx102.ccr.corp.intel.com> (raw)
In-Reply-To: <E115CCD9D858EF4F90C690B0DCB4D8973C7D3BB4@IRSMSX108.ger.corp.intel.com>

And this patch will be only related to exact match, the common usage of lpm is not impacted. 

Thanks
Qian

-----Original Message-----
From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of De Lara Guarch, Pablo
Sent: Friday, July 24, 2015 8:29 AM
To: Qiu, Michael; dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH] examples/l3fwd: increase lookup burst size to 8

Hi Michael,

> -----Original Message-----
> From: Qiu, Michael
> Sent: Thursday, July 23, 2015 6:26 PM
> To: De Lara Guarch, Pablo; dev@dpdk.org
> Subject: RE: [dpdk-dev] [PATCH] examples/l3fwd: increase lookup burst 
> size to 8
> 
> Hi, Pablo
> 
> Is there any performance data for this change?

With this change, performance increases around 12% compared to the version before the patch.

Thanks,
Pablo

> 
> Thanks,
> Michael
> 
> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Pablo de Lara
> Sent: Thursday, July 23, 2015 9:12 AM
> To: dev@dpdk.org
> Subject: [dpdk-dev] [PATCH] examples/l3fwd: increase lookup burst size 
> to 8
> 
> With the new hash implementation, the minimum lookup burst size to get 
> good performance is 8, since its internal pipeline consists of 4 
> stages of 2 entries each, so to avoid duplication, burst size should be 8 or more entries.
> 
> Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>

  reply	other threads:[~2015-07-24  1:10 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-07-23 16:12 Pablo de Lara
2015-07-23 17:25 ` Qiu, Michael
2015-07-24  0:28   ` De Lara Guarch, Pablo
2015-07-24  1:08     ` Xu, Qian Q [this message]
2015-07-24  1:14       ` De Lara Guarch, Pablo
2015-07-27 14:43 ` Thomas Monjalon

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