Re: [dpdk-dev] Errors Rx count increasing while pktgen doing nothing on Intel 82598EB 10G

["Wiles, Keith" <keith.wiles@intel.com>]

On 12/27/15, 2:09 PM, "Laurent GUERBY" <laurent@guerby.net> wrote:

>On Sun, 2015-12-27 at 19:43 +0000, Wiles, Keith wrote:
>> On 12/27/15, 12:31 PM, "dev on behalf of Laurent GUERBY" <dev-bounces@dpdk.org on behalf of laurent@guerby.net> wrote:
>> 
>> >Hi,
>> >
>> >I reported today an issue when using Pktgen-DPDK:
>> >https://github.com/pktgen/Pktgen-DPDK/issues/52
>> >
>> >But I think it's more in DPDK than pktgen
>> >
>> >two identical machines with SFP+ DA cable between them
>> >DPDK 2.2.0 from tarball
>> >Pktgen-DPDK from git
>> >two identical machines:
>> >core i7 2600 (sandy bridge 4C/8T), HT disabled in the BIOS
>> >ASUS P8H67-M PRO BIOS 3904 (latest available)
>> >Ethernet controller: Intel Corporation 82598EB 10-Gigabit AF Dual Port
>> >Network Connection (rev 01)
>> >01:00.0 0200: 8086:10f1 (rev 01)
>> >	Subsystem: 8086:a21f
>> >boot kernel 3.16 unbutu 14.04 with isolcpus=2,3,4
>> >
>> >When launching pktgen even with no TX asked the Errors RX counters keeps
>> >going up by about 7.4 millions per second:
>> >
>> >Errors Rx/Tx : 7471857054/0
>> >
>> >In the log I get "Could not enable Rx Queue", might be the
>> >source of the issue?
>> >
>> >PMD: ixgbe_dev_rx_queue_start(): Could not enable Rx Queue 0
>> >PMD: ixgbe_dev_rx_queue_start(): Could not enable Rx Queue 1
>> >
>> >When sending traffic  single UDP src/dst/IP/MAC the setup
>> >reaches 14204188 pps 64 bytes, the error counter is also
>> >increasing.
>> >
>> >Any idea what to look for?
>> 
>> One more suggestion is to run test_pmd on one machine and something
>> like iperf on the other to verify the DPDK is working correct, which I
>> assume will be true. Not sure the RX errors are reported in the
>> test_pmd or you could use the l3fwd application too.
>
>Ok, I will check the test_pmd documentation and try to do this test: I'm
>just starting on DPDK :).
>
>> Please also send me the 'lspci | grep Ethernet’ output.
>
>I included one line in my original email above (plus extract of lspci
>-vn), here is the full output of the command:
>
>01:00.0 Ethernet controller: Intel Corporation 82598EB 10-Gigabit AF
>Dual Port Network Connection (rev 01)
>01:00.1 Ethernet controller: Intel Corporation 82598EB 10-Gigabit AF
>Dual Port Network Connection (rev 01)
>05:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
>RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 06)
>
>(The realtek is used only for internet connectivity).
>
>> Also send me the command line.
>
>On the first machine t1 :
>root@t1:~/pktgen-dpdk# ./app/app/x86_64-native-linuxapp-gcc/pktgen \
>-c e -n 1 --proc-type auto -- -m '[2:3].1' -P -f t1-t3.pkt -N  
>
>And on the other machine t3:
>root@t3:~/pktgen-dpdk# ./app/app/x86_64-native-linuxapp-gcc/pktgen \
>-c e -n 1 --proc-type auto -- -m '[2:3].1' -P -f t3-t1.pkt -N

You need to always start with port numbering for Pktgen with zero.

Change the [2:3].1 to [2:3].0 the reason is you removed one of the two ports and Pktgen starts port counting from zero for the first available port :-)

Sorry, I did not spot that sooner.
>
>The two "-f" pkt files are attached to this email, I do "start 1"
>manually at the pktgen prompt.
>
>Thanks for your time,
>
>Sincerely,
>
>Laurent
>
>
>> >
>> >Laurent
>> >
>> >
>> 
>> 
>> Regards,
>> Keith
>> 
>> 
>> 
>> 
>
>


Regards,
Keith