[dpdk-stable] [PATCH v2] app/testpmd: fix little perf drop with XL710

[Li, Xiaoyun]

OK. I will modify the commit log and name and send v3 later. Thanks.

> -----Original Message-----
> From: Lu, Wenzhuo
> Sent: Thursday, July 12, 2018 13:56
> To: Li, Xiaoyun <xiaoyun.li at intel.com>; Zhang, Qi Z <qi.z.zhang at intel.com>
> Cc: dev at dpdk.org; stable at dpdk.org
> Subject: RE: [PATCH v2] app/testpmd: fix little perf drop with XL710
> 
> Hi Xiaoyun,
> 
> 
> > -----Original Message-----
> > From: Li, Xiaoyun
> > Sent: Wednesday, July 11, 2018 10:16 AM
> > To: Zhang, Qi Z <qi.z.zhang at intel.com>; Lu, Wenzhuo
> > <wenzhuo.lu at intel.com>
> > Cc: dev at dpdk.org; Li, Xiaoyun <xiaoyun.li at intel.com>; stable at dpdk.org
> > Subject: [PATCH v2] app/testpmd: fix little perf drop with XL710
> >
> > There is about 1.8M perf drop with XL710. And it is because of a
> > bitrate
> What's 1.8M mean? BPS? PPS?
> Looks like this patch fixes the CPU consuming problem and has nothing to do
> with a specific NIC.
> 2 suggestions.
> Just omit XL710, also in the tittle.
> Maybe better mentioning how many percent drop but not an accurate
> number.
> 
> Except that, Acked-by: Wenzhuo Lu <wenzhuo.lu at intel.com>
> 
> 
> > calculation in the datapath. So improve it by maintaining an array of
> > port indexes in testpmd, which is updated with ethdev events.
> >
> > Fixes: 8728ccf37615 ("fix ethdev ports enumeration")
> > Cc: stable at dpdk.org
> >
> > Signed-off-by: Xiaoyun Li <xiaoyun.li at intel.com>