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

[Laurent GUERBY]

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 at dpdk.org on behalf of laurent at 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 at 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 at 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

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
> 
> 
> 
>