[ovs-discuss] Intel DPDK testpmd application issues

[Traynor, Kevin]

Hi Hiteshi,

DPDK only detected 1 core, so makes sense that it would reject a coremask of 0xf. I've only tested with QEMU but VirtualBox may only be letting 1 core be emulated - in that case you could try without the --nb-cores flag. However, it would probably affect the performance you will see.

You might find more information on the DPDK mailing list regarding DPDK and VirtualBox, or if not that would probably be the best place to ask as someone may have hit this already and it's not OVS specific.

Thanks,
Kevin.

From: Hiteshi Kalra [mailto:hiteshi.kalra at tcs.com]
Sent: Monday, December 22, 2014 12:15 PM
To: Traynor, Kevin
Cc: discuss at openvswitch.org
Subject: RE: [ovs-discuss] Intel DPDK testpmd application issues

Thanks kevin for helping us.

but i have got following error in changing value of C, even we can not give any value of C other than 1:

root at saloni-VirtualBox:/usr/src/dpdk-1.7.1/x86_64-native-linuxapp-gcc/build/app/test-pmd#<mailto:root at saloni-VirtualBox:/usr/src/dpdk-1.7.1/x86_64-native-linuxapp-gcc/build/app/test-pmd#> ./testpmd -c 0xf -n4 -- -i --portmask=0x1 --nb-cores=2
EAL: Detected lcore 0 as core 0 on socket 0
EAL: Support maximum 64 logical core(s) by configuration.
EAL: Detected 1 lcore(s)
EAL: lcore 1 unavailable
EAL: invalid coremask

Usage: ./testpmd -c COREMASK -n NUM [-m NB] [-r NUM] [-b <domain:bus:devid.func>][--proc-type primary|secondary|auto]

EAL options:
  -c COREMASK  : A hexadecimal bitmask of cores to run on
  -n NUM       : Number of memory channels
  -v           : Display version information on startup
  -d LIB.so    : add driver (can be used multiple times)
  -m MB        : memory to allocate (see also --socket-mem)
  -r NUM       : force number of memory ranks (don't detect)
  --xen-dom0 : support application running on Xen Domain0 without hugetlbfs
  --syslog     : set syslog facility
  --socket-mem : memory to allocate on specific
                 sockets (use comma separated values)
  --huge-dir   : directory where hugetlbfs is mounted
  --proc-type  : type of this process
  --file-prefix: prefix for hugepage filenames

Thanks
Hiteshi

-----"Traynor, Kevin" <kevin.traynor at intel.com<mailto:kevin.traynor at intel.com>> wrote: -----
To: Hiteshi Kalra <hiteshi.kalra at tcs.com<mailto:hiteshi.kalra at tcs.com>>, "discuss at openvswitch.org<mailto:discuss at openvswitch.org>" <discuss at openvswitch.org<mailto:discuss at openvswitch.org>>
From: "Traynor, Kevin" <kevin.traynor at intel.com<mailto:kevin.traynor at intel.com>>
Date: 12/19/2014 11:06PM
Subject: RE: [ovs-discuss] Intel DPDK testpmd application issues
The core mask is set for 1 core with -c 0x1, but --nb-cores=2 means that the app is to use 2 fwding cores. Try changing to -c 0xf

Thanks,
Kevin.

From: discuss [mailto:discuss-bounces at openvswitch.org] On Behalf Of Hiteshi Kalra
Sent: Friday, December 19, 2014 11:38 AM
To: discuss at openvswitch.org<mailto:discuss at openvswitch.org>
Subject: [ovs-discuss] Intel DPDK testpmd application issues

Hi Team,

We are running OVS with Intel DPDK Sample applications.
We have successfully run helloworld application as specified in Intel getting started guide.pdf

But We are getting some issues in running testpmd application as speified in (http://www.intel.in/content/dam/www/public/us/en/documents/guides/intel-dpdk-testpmd-application-user-guide.pdf).

We have used following command for it :

sudo ./testpmd -c 0x1 -n 4 -- -i --portmask=0x1 --nb-cores=2

EAL: Requesting 1238 pages of size 2MB from socket 0
EAL: TSC frequency is ~3178599 KHz
EAL: WARNING: cpu flags constant_tsc=yes nonstop_tsc=no -> using unreliable clock cycles !
EAL: Master core 0 is ready (tid=888ca800)
EAL: PCI device 0000:00:03.0 on NUMA socket -1
EAL:   probe driver: 8086:100e rte_em_pmd
EAL:   PCI memory mapped at 0x7fde88874000
PANIC in main():
Empty set of forwarding logical cores - check the core mask supplied in the command parameters
5: [./testpmd() [0x4240a5]]
4: [/lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xed) [0x7fde879fb76d]]
3: [./testpmd(main+0x4f2) [0x423df2]]
2: [./testpmd(__rte_panic+0xc1) [0x42379a]]
1: [./testpmd(rte_dump_stack+0x23) [0x486393]]


Can anyone please help me in resloving error?

Thanks
Hiteshi

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