Arnon Warshavsky <arnon at qwilt.com> wrote on 10/19/2015 03:46:22 PM:
> From: Arnon Warshavsky <arnon at qwilt.com> > To: Eimear Morrissey/Ireland/IBM at IBMIE > Cc: dev at dpdk.org > Date: 10/19/2015 03:46 PM > Subject: Re: [dpdk-dev] Inconsistent statistics counters for pmd_i40e > > Hi Eimear > > This is the link I have. > https://downloadcenter.intel.com/download/24769 > > I guess that the version seen in the web page comes from a different > parallel universe. > You should see the actual fw version inside the zip file. > Thanks > /Arnon > > On Mon, Oct 19, 2015 at 5:30 PM, Eimear Morrissey <eimear.morrissey at ie.ibm.com > > wrote: > Arnon Warshavsky <arnon at qwilt.com> wrote on 10/19/2015 03:01:46 PM: > > > From: Arnon Warshavsky <arnon at qwilt.com> > > To: Eimear Morrissey/Ireland/IBM at IBMIE > > Cc: dev at dpdk.org > > Date: 10/19/2015 03:01 PM > > Subject: Re: [dpdk-dev] Inconsistent statistics counters for pmd_i40e > > > > > Hi Eimear, > > > > I just experienced the same problem with firmware versions 4.23 and > > 4.33 (dpdk 2.0). Did not get to try the latest which is 4.5. > > Looking at the code, I don't see that this counter is being read any > > differently than its peer counters and I suspect the nic itself. > > Can you tell which firmware version you were using? > > > > thanks > > /Arnon > > > > On Mon, Oct 19, 2015 at 2:43 PM, Eimear Morrissey < > eimear.morrissey at ie.ibm.com > > > wrote: > > > > > > Hi, > > > > I'm having issues measuring packets dropped at the NIC in both the 2.0.0 > > and 2.1.0 versions of DPDK on an X710 Intel NIC. > > > > In dpdk-2.0.0 > > Using rte_eth_xstats the rx_packets and rx_bytes counters increase as > > expected, however rx_missed_errors is always 0 even if a sleep statement is > > added between calls to rte_eth_rx_burst. However changing the coremask so > > the application is running on a different socket than the card will cause > > rx_missed_errors to increment for a limited amount of time and then stop. > > Using rte_eth_stats, ipackets is incremented on packet receipt but the > > q_ipackets and q_errors arrays remain zero. Even crossing sockets seems to > > have no effect on q_errors. > > > > In dpdk-2.1.0 the behaviour is the same as above, except that the number of > > fields returned by rte_eth_xstats_get is reduced (no rx_missed errors at > > all) so running on a different socket no longer has any noticeable effect > > on the stats. > > > > My understanding from the API manual is that the rte_eth_stats q_errors > > array should count the packets missed because software isn't polling fast > > enough, but that doesn't seem to be the case? Is there a standard DPDK way > > to check this? The application is a forwarding one so there's no other way > > to estimate drop except through NIC rx. > > > > Thanks, > > Eimear > > > > > > > > -- > > > > Arnon Warshavsky > > Qwilt | work: +972-72-2221634 | mobile: +972-50-8583058 | arnon at qwilt.com > Hi Arnon, > > The firmware version I'm using is 4.26. Where do you see the latest > is 4.5 - I can't find anything obvious in the download centre? > > Regards, > Eimear > > > > -- > > Arnon Warshavsky > Qwilt | work: +972-72-2221634 | mobile: +972-50-8583058 | arnon at qwilt.com I tried installing the firmware but on running the NVM update tool I just get "No updates available for your device" which makes me think that (for my SKU at least) I'm on the latest firmware. Also, if I bind the card back to the i40e driver, I can force the dropped count in ifconfig to increase by decreasing the rx ring size so I'm not convinced it's entirely a hardware issue. Regards, Eimear
