* [dpdk-dev] rte_ixgbevf_pmd not reporting dropped packets
@ 2016-11-07 17:17 Montorsi, Francesco
2016-11-08 1:20 ` Lu, Wenzhuo
0 siblings, 1 reply; 2+ messages in thread
From: Montorsi, Francesco @ 2016-11-07 17:17 UTC (permalink / raw)
To: dev
Hi all,
I'm using DPDK inside the OS of a VM that is SR-IOV-accelerated.
I noticed however that the "rte_ixgbevf_pmd" PMD does not report drops... I am sending packets at TX side at 14Mpps; at the RX side I'm using "testpmd" and it's reporting 'just' 12Mpps, but zero drops (also through xstats).
Is this a known bug?
I found a message at
http://dpdk.org/ml/archives/dev/2016-March/035374.html
reporting a similar issue back in March this year...
Thanks,
Francesco Montorsi
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [dpdk-dev] rte_ixgbevf_pmd not reporting dropped packets
2016-11-07 17:17 [dpdk-dev] rte_ixgbevf_pmd not reporting dropped packets Montorsi, Francesco
@ 2016-11-08 1:20 ` Lu, Wenzhuo
0 siblings, 0 replies; 2+ messages in thread
From: Lu, Wenzhuo @ 2016-11-08 1:20 UTC (permalink / raw)
To: Montorsi, Francesco, dev
Hi Francesco,
> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Montorsi, Francesco
> Sent: Tuesday, November 8, 2016 1:17 AM
> To: dev@dpdk.org
> Subject: [dpdk-dev] rte_ixgbevf_pmd not reporting dropped packets
>
> Hi all,
>
> I'm using DPDK inside the OS of a VM that is SR-IOV-accelerated.
> I noticed however that the "rte_ixgbevf_pmd" PMD does not report drops... I
> am sending packets at TX side at 14Mpps; at the RX side I'm using "testpmd" and
> it's reporting 'just' 12Mpps, but zero drops (also through xstats).
>
> Is this a known bug?
> I found a message at
> http://dpdk.org/ml/archives/dev/2016-March/035374.html
> reporting a similar issue back in March this year...
It's a known limitation. The stats are got from HW. But there're very limited counters for VF. There's no similar counter as imiss for VF :(
>
>
> Thanks,
>
> Francesco Montorsi
^ permalink raw reply [flat|nested] 2+ messages in thread
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