[dpdk-users] pdump help

[Nishant Verma]

Hi,

Something is still creating the problem. just can't figure out.

Here is the scenario....
Just inserted IGB UIO module, attached one 10G NIC to DPDK &
4096 hugepage.

---
trying to run l3fwd as primary and pducp as secondary  to capture packet
dump.
Earlier dpdk_pdump is crashing on either create_mp_ring_vdev:649 or
create_mp_ring_vdev:669.

Now i changed some parameters of pdump and l3fwd, change hugepages to 8192
and tried to run like this..
*./l3fwd -c 606 -n 4 --proc-type=primary  --socket-mem=1024 --file-prefix
l3f -- -p 0x1 --config="(0,0,1),(0,1,2)"*

Here is the log of app
"
EAL: Detected 16 lcore(s)
EAL: Probing VFIO support...
EAL: VFIO support initialized
PMD: bnxt_rte_pmd_init() called for (null)
EAL: PCI device 0000:03:00.0 on NUMA socket 0
EAL:   probe driver: 8086:15ad rte_ixgbe_pmd
EAL: PCI device 0000:03:00.1 on NUMA socket 0
EAL:   probe driver: 8086:15ad rte_ixgbe_pmd
EAL: PCI device 0000:05:00.0 on NUMA socket 0
EAL:   probe driver: 8086:1521 rte_igb_pmd
EAL: PCI device 0000:05:00.1 on NUMA socket 0
EAL:   probe driver: 8086:1521 rte_igb_pmd
L3FWD: LPM or EM none selected, default LPM on
Initializing port 0 ... Creating queues: nb_rxq=2 nb_txq=4...
Address:0C:C4:7A:73:EF:14, Destination:02:00:00:00:00:00, Allocated mbuf
pool on socket 0
LPM: Adding route 0x01010100 / 24 (0)
LPM: Adding route IPV6 / 48 (0)
txq=1,0,0 txq=2,1,0 txq=9,2,0 txq=10,3,0

Skipping disabled port 1

Initializing rx queues on lcore 1 ... rxq=0,0,0
Initializing rx queues on lcore 2 ... rxq=0,1,0
Initializing rx queues on lcore 9 ...
Initializing rx queues on lcore 10 ...

"
It seems everything is good in this. So I tried to run pdump like


* ./dpdk_pdump -- --pdump
'port=0,queue=*,rx-dev=/tmp/rx-file.pcap,tx-dev=/tmp/tx-file.pcap,ring-size=1024,mbuf-size=20,total-num-mbufs=1025'*
Here is log for pdump

"
EAL: Detected 16 lcore(s)
EAL: Probing VFIO support...
EAL:   cannot connect to primary process!
EAL: VFIO support could not be initialized
EAL: WARNING: Address Space Layout Randomization (ASLR) is enabled in the
kernel.
EAL:    This may cause issues with mapping memory into secondary processes
EAL: Could not open /dev/hugepages/rtemap_510
PANIC in rte_eal_init():
Cannot init memory
6: [./dpdk_pdump(_start+0x29) [0x4289b9]]
5: [/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf0)
[0x7fa22219aa40]]
4: [./dpdk_pdump(main+0x155) [0x42c417]]
3: [./dpdk_pdump(rte_eal_init+0xf14) [0x4603b4]]
2: [./dpdk_pdump(__rte_panic+0xc9) [0x424b59]]
1: [./dpdk_pdump(rte_dump_stack+0x2b) [0x4677fb]]
Aborted (core dumped)

"

It seems from log that their is some issue in memory between primary and
secondary, but when i tried to run one l2fwd as primary and one l3fwd as
secondary it works fine.


On Fri, Jul 22, 2016 at 7:21 AM, Pattan, Reshma <reshma.pattan at intel.com>
wrote:

> Hi,
>
>
>
> I see some cleanup related bug in the dpdk_pdump tool, so until I publish
> fix for that,
>
> You need to restart  both primary and secondary process( work around)
> after you see any RING/VDEV failure issues.
>
>
>
> Thanks,
>
> Reshma
>
>
>
>
>
> *From:* Pattan, Reshma
> *Sent:* Friday, July 22, 2016 10:31 AM
> *To:* 'Nishant Verma' <vnish11 at gmail.com>
> *Cc:* users at dpdk.org
> *Subject:* RE: pdump help
>
>
>
> Hi,
>
>
>
> As I see “RING: Cannot reserve memory”. Please allocate enough huge page
> memory and see what happens.
>
>
>
> Also once you encounter such error please restart  both primary and
> secondary process.
>
>
>
> Please paste me the full  error log, if you still face the issue.
>
>
>
> Thanks,
>
> Reshma
>
>
>
>
>
> *From:* Nishant Verma [mailto:vnish11 at gmail.com <vnish11 at gmail.com>]
> *Sent:* Thursday, July 21, 2016 9:10 PM
> *To:* Pattan, Reshma <reshma.pattan at intel.com>
> *Cc:* users at dpdk.org
> *Subject:* Re: pdump help
>
>
>
> Hi Reshma,
>
>
>
> Tried things pointed by you(libpcap Installed & config parameter is set).
>
> But still things are not working.
>
>
>
> "
>
> root at ubuntu:/home/oneweb/dpdk/app/pdump# ./dpdk_pdump
> --proc-type=secondary -- --pdump
> 'device_id=03:00.0,queue=*,rx-dev=/tmp/rx-file.pcap,tx-dev=/tmp/tx-file.pcap'
>
> EAL: Detected 16 lcore(s)
>
> EAL: Probing VFIO support...
>
> EAL: WARNING: Address Space Layout Randomization (ASLR) is enabled in the
> kernel.
>
> EAL:    This may cause issues with mapping memory into secondary processes
>
> PMD: bnxt_rte_pmd_init() called for (null)
>
> EAL: PCI device 0000:03:00.0 on NUMA socket 0
>
> EAL:   probe driver: 8086:15ad rte_ixgbe_pmd
>
> EAL: PCI device 0000:03:00.1 on NUMA socket 0
>
> EAL:   probe driver: 8086:15ad rte_ixgbe_pmd
>
> PMD: eth_ixgbe_dev_init(): No TX queues configured yet. Using default TX
> function.
>
> EAL: PCI device 0000:05:00.0 on NUMA socket 0
>
> EAL:   probe driver: 8086:1521 rte_igb_pmd
>
> EAL: PCI device 0000:05:00.1 on NUMA socket 0
>
> EAL:   probe driver: 8086:1521 rte_igb_pmd
>
> RING: Cannot reserve memory
>
> EAL: Error - exiting with code: 1
>
>   Cause: File exists:create_mp_ring_vdev:649
>
> "
>
>
>
>
>
> Rgds,
>
> Nishant
>
>
>
>
>
> On Thu, Jul 21, 2016 at 5:16 AM, Pattan, Reshma <reshma.pattan at intel.com>
> wrote:
>
> Hi,
>
>
>
> Pdump tool is designed based on PCAP PMD. So you need to install libpcap
> package and set CONFIG_RTE_LIBRTE_PMD_PCAP flag to “y”
>
> in config/common_base file and recompile the DPDK and run pdump tool.
> Please let me know if that fix the issue.
>
>
>
> This dependency is mentioned in the  document
> *“doc/guides/sample_app_ug/pdump.rst.”*
>
>
>
> Thanks,
>
> Reshma
>
>
>
> *From:* Nishant Verma [mailto:vnish11 at gmail.com]
> *Sent:* Wednesday, July 20, 2016 8:08 PM
> *To:* Pattan, Reshma <reshma.pattan at intel.com>
> *Subject:* pdump help
>
>
>
> Hi Reshma,
>
>
>
> i am facing some issue in executing pdump. I have seen in logs that you
> recently updated the code. Please let me know if i am doing anything wrong.
>
>
>
>
>
> *app/pdump# ./dpdk_pdump -- --pdump
> 'device_id=03:00.0,queue=*,rx-dev=/tmp/rx-1-file.pcap,tx-dev=tx-1-file.pcap'*
>
>
>
> This is the error i am getting.
>
> *Cause: File exists:create_mp_ring_vdev:649*
>
>
>
> ​Thanks a lot.​
>
>
>
> --
>
> Rgds,
>
> Nishant
>
>
>
>
>
>
>
>
>
>
>
> --
>
> Rgds,
>
> Nishant
>
>
>
>
>
>
>



-- 
Rgds,
Nishant