[dpdk-users] L3fwd-power queue utilization issue.

[Soumen Chandra Laha]

Hi Stephen,
Thanks for your email.

Tried binding the NIC's to vfio-pci. Observed still queue 0 of Port 0, Port
1 has been utilized. No interrupts for queue 1.

./dpdk-devbind.py -s

Network devices using DPDK-compatible driver
============================================
0000:17:00.0 'Ethernet Controller XXV710 for 25GbE SFP28 158b' drv=vfio-pci
unused=i40e,igb_uio
0000:17:00.1 'Ethernet Controller XXV710 for 25GbE SFP28 158b' drv=vfio-pci
unused=i40e,igb_uio

------------------------------------------------------------------------------
./l3fwd-power  -l 2,3,4,5 -n 6 --socket-mem 512,0 --file-prefix l3fwd  -w
17:00.0 -w 17:00.1  -- -p 0x3 --config '(0,0,2),(0,1,3),(1,0,4),(1,1,5)'  -P
EAL: Detected 48 lcore(s)
EAL: Detected 1 NUMA nodes
EAL: Multi-process socket /var/run/dpdk/l3fwd/mp_socket
EAL: Probing VFIO support...
EAL: VFIO support initialized
EAL: PCI device 0000:17:00.0 on NUMA socket 0
EAL:   probe driver: 8086:158b net_i40e
EAL:   using IOMMU type 1 (Type 1)
EAL: PCI device 0000:17:00.1 on NUMA socket 0
EAL:   probe driver: 8086:158b net_i40e
Promiscuous mode selected
POWER: Attempting to initialise ACPI cpufreq power management...
POWER: Power management governor of lcore 2 has been set to user space
successfully
POWER: Initialized successfully for lcore 2 power management
POWER: Power management governor of lcore 3 has been set to user space
successfully
POWER: Initialized successfully for lcore 3 power management
POWER: Power management governor of lcore 4 has been set to user space
successfully
POWER: Initialized successfully for lcore 4 power management
POWER: Power management governor of lcore 5 has been set to user space
successfully
POWER: Initialized successfully for lcore 5 power management
Initializing port 0 ... Creating queues: nb_rxq=2 nb_txq=4... Port 0
modified RSS hash function based on hardware support,requested:0x20820
configured:0x820
 Address:00:E0:ED:96:2B:AA, Allocated mbuf pool on socket 0
LPM: Adding route 0x01010100 / 24 (0)
LPM: Adding route 0x02010100 / 24 (1)
LPM: Adding route 0x03010100 / 24 (2)
LPM: Adding route 0x04010100 / 24 (3)
LPM: Adding route 0x05010100 / 24 (4)
LPM: Adding route 0x06010100 / 24 (5)
LPM: Adding route 0x07010100 / 24 (6)
LPM: Adding route 0x08010100 / 24 (7)
txq=2,0,0 txq=3,1,0 txq=4,2,0 txq=5,3,0
Initializing port 1 ... Creating queues: nb_rxq=2 nb_txq=4... Port 1
modified RSS hash function based on hardware support,requested:0x20820
configured:0x820
 Address:00:E0:ED:96:2B:AB, txq=2,0,0 txq=3,1,0 txq=4,2,0 txq=5,3,0

Initializing rx queues on lcore 2 ... rxq=0,0,0
Initializing rx queues on lcore 3 ... rxq=0,1,0
Initializing rx queues on lcore 4 ... rxq=1,0,0
Initializing rx queues on lcore 5 ... rxq=1,1,0

Checking link status.....done
Port 0 Link Up - speed 25000 Mbps - full-duplex
Port 1 Link Up - speed 25000 Mbps - full-duplex
L3FWD_POWER: entering main loop on lcore 3
L3FWD_POWER:  -- lcoreid=3 portid=0 rxqueueid=1
L3FWD_POWER: entering main loop on lcore 4
L3FWD_POWER: entering main loop on lcore 5
L3FWD_POWER: entering main loop on lcore 2
L3FWD_POWER:  -- lcoreid=5 portid=1 rxqueueid=1
L3FWD_POWER:  -- lcoreid=4 portid=1 rxqueueid=0
L3FWD_POWER:  -- lcoreid=2 portid=0 rxqueueid=0
L3FWD_POWER: lcore 5 sleeps until interrupt triggers
L3FWD_POWER: lcore 4 sleeps until interrupt triggers
L3FWD_POWER: lcore 2 sleeps until interrupt triggers
L3FWD_POWER: lcore 3 sleeps until interrupt triggers
L3FWD_POWER: lcore 4 is waked up from rx interrupt on port 1 queue 0
L3FWD_POWER: lcore 2 is waked up from rx interrupt on port 0 queue 0
L3FWD_POWER: lcore 2 sleeps until interrupt triggers
L3FWD_POWER: lcore 2 is waked up from rx interrupt on port 0 queue 0
L3FWD_POWER: lcore 2 sleeps until interrupt triggers
L3FWD_POWER: lcore 4 sleeps until interrupt triggers
L3FWD_POWER: lcore 4 is waked up from rx interrupt on port 1 queue 0
L3FWD_POWER: lcore 4 sleeps until interrupt triggers

Does anybody observed similar behavior, any help & suggestions will be
appreciated.

Thanks,
Soumen Chandra Laha



On Mon, Feb 17, 2020 at 4:15 AM Stephen Hemminger <
stephen at networkplumber.org> wrote:

> On Fri, 14 Feb 2020 16:36:04 +0530
> Soumen Chandra Laha <soumen.laha32 at gmail.com> wrote:
>
> > Hi,
> >
> > I'm trying to run l3fwd-power application for 2 Port with queue. Always
> > only queue 1 of port 0 and port 1 are utilized.
> > CPU C-state, hpet are enabled,  ports are binded to igb_uio.
> > Tried with NIC's x772 (10 GbE) and XXV710(25 GbE), Observed same
> behavior.
> >
>
> Igb_uio does not support per-queue interrupts. That needs MSI-X which is
> only supported by VFIO-pci.
>
>