[dpdk-dev] [PATCH] i40e: improve performance of vector PMD

2016-04-14 Thread Iremonger, Bernard
v] [PATCH] i40e: improve performance of vector PMD > > > > > -Original Message- > > From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Bruce Richardson > > Sent: Thursday, April 14, 2016 2:50 PM > > To: dev at dpdk.org > > Cc: Zhang, Helin; Wu, Jingjing &

[dpdk-dev] [PATCH] i40e: improve performance of vector PMD

2016-04-14 Thread Bruce Richardson
On Thu, Apr 14, 2016 at 11:15:21AM +0100, Bruce Richardson wrote: > An analysis of the i40e code using Intel? VTune? Amplifier 2016 showed > that the code was unexpectedly causing stalls due to "Loads blocked by > Store Forwards". This can occur when a load from memory has to wait > due to the prio

[dpdk-dev] [PATCH] i40e: improve performance of vector PMD

2016-04-14 Thread Ananyev, Konstantin
> -Original Message- > From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Bruce Richardson > Sent: Thursday, April 14, 2016 2:50 PM > To: dev at dpdk.org > Cc: Zhang, Helin; Wu, Jingjing > Subject: Re: [dpdk-dev] [PATCH] i40e: improve performance of vector PMD &

[dpdk-dev] [PATCH] i40e: improve performance of vector PMD

2016-04-14 Thread Bruce Richardson
An analysis of the i40e code using Intel? VTune? Amplifier 2016 showed that the code was unexpectedly causing stalls due to "Loads blocked by Store Forwards". This can occur when a load from memory has to wait due to the prior store being to the same address, but being of a smaller size i.e. the st