[dpdk-users] pdump can only run once

[Violet Wang]

Hi all,
I've solved the issue by my own. There's no error in dpdk-pdump, the root
cause is from my program, sorry for bothering you.

Thanks,
Violet.

Violet Wang <violet127001 at gmail.com> 於 2019年12月10日 週二 下午3:01寫道：

> Hi all,
>
> I need your help to solve an issue when using dpdk-pdump.
>
>
>
> I wrote a pktgen-like program and started it first, and it can run well.
>
> # ./my_program -l 0-2
>
>
>
> When I started dpdk-pdump to capture packets for the first time, I can
> capture packets, but it didn't show the captured packet counter (PDUMP
> DEBUG STATS) when I stopped it.
>
> # ./dpdk-pdump -l 0-2 -- --pdump 'port=0,queue=*,tx-dev=/tmp/test.pcap'
>
> EAL: Detected 8 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
>
> EAL: PCI device 0000:03:00.0 on NUMA socket -1
>
> EAL:   Invalid NUMA socket, default to 0
>
> EAL:   probe driver: 15ad:7b0 net_vmxnet3
>
> EAL: PCI device 0000:0b:00.0 on NUMA socket -1
>
> EAL:   Invalid NUMA socket, default to 0
>
> EAL:   probe driver: 15ad:7b0 net_vmxnet3
>
> EAL: PCI device 0000:13:00.0 on NUMA socket -1
>
> EAL:   Invalid NUMA socket, default to 0
>
> EAL:   probe driver: 15ad:7b0 net_vmxnet3
>
> PMD: Initializing pmd_pcap for net_pcap_tx_0
>
> PMD: Creating pcap-backed ethdev on numa socket 4294967295
>
> Port 1 MAC: 00 00 00 01 02 03
>
>
>
> However, when I tried to start dpdk-pdump again, it was terminated. Here's
> what I got:
>
> # ./dpdk-pdump -l 0-2 -- --pdump 'port=0,queue=*,tx-dev=/tmp/test.pcap'
>
> EAL: Detected 8 lcore(s)
>
> EAL: Probing VFIO support...
>
> EAL: PCI device 0000:03:00.0 on NUMA socket -1
>
> EAL:   Invalid NUMA socket, default to 0
>
> EAL:   probe driver: 15ad:7b0 net_vmxnet3
>
> EAL: PCI device 0000:0b:00.0 on NUMA socket -1
>
> EAL:   Invalid NUMA socket, default to 0
>
> EAL:   probe driver: 15ad:7b0 net_vmxnet3
>
> EAL: PCI device 0000:13:00.0 on NUMA socket -1
>
> EAL:   Invalid NUMA socket, default to 0
>
> EAL:   probe driver: 15ad:7b0 net_vmxnet3
>
> RING: Cannot reserve memory
>
> EAL: Error - exiting with code: 1
>
>   Cause: File exists
>
> Done.
>
>
>
> Also, I observed some phenomenon:
>
> 1. If I stopped my program, dpdk-pdump can work again for the first time,
> but it still failed when I tried to use it again.
>
> 2. I've tried the same codes on ubuntu-18.04, and the issue was not
> observed.
>
>
>
> I've checked these:
>
> 1.Before compiling DPDK, set both "CONFIG_RTE_LIBRTE_PMD_PCAP" and
> "CONFIG_RTE_LIBRTE_PDUMP" to y.
>
> 2.Disabled ASRL with "echo 0 | sudo tee
> /proc/sys/kernel/randomize_va_space"
>
> 3.Increased hugepage to 2048, but the issue was not gone.
>
>
>
> *Here's my environment:
>
> OS: CentOS Linux release 7.6.1810 (Core)
>
> kernel version: 3.10.0-957.el7.x86_64
>
> CPU: 8 core
>
> Hard disk/ram disk: 64 GB/32 GB
>
> Numa node: 2
>
> DPDK version: 17.11
>
> used config: defconfig_x86_64-native-linuxapp-gcc
>
> hugepage: 1024
>
>
>
> *Here's hugepage information:
>
> # grep Huge /proc/meminfo
>
> AnonHugePages:     10240 kB
>
> HugePages_Total:    2048
>
> HugePages_Free:     1536
>
> HugePages_Rsvd:        0
>
> HugePages_Surp:        0
>
> Hugepagesize:       2048 kB
>
>
>
> *Here's numa node information:
>
> # dmesg | grep -i numa
>
> [ 0.000000] NUMA: Node 0 [mem 0x00000000-0x0009ffff] + [mem
> 0x00100000-0xbfffffff] -> [mem 0x00000000-0xbfffffff]
>
> [ 0.000000] NUMA: Node 0 [mem 0x00000000-0xbfffffff] + [mem
> 0x100000000-0x83fffffff] -> [mem 0x00000000-0x83fffffff]
>
>
>
> I'd be very apricated for your help. Many thanks for your reading.
>
> Best Regards,
>
> Violet
>


-- 
----------------------------------------------------------
王薇鈞 (Wei-Chun Wang)
contact me via:
phone:0975032752
email: violet127001 at gmail.com