On Tue, Nov 19, 2013 at 11:31 AM, Wiles, Roger Keith
<keith.wiles at windriver.com> wrote:
> How do you have Pktgen configured in this case?
>
> On my westmere dual socket 3.4Ghz machine I can send 20G on a single NIC
> 82599x two ports. My machine has a PCIe bug that does not allow me to send
> on more then 3 ports at wire rate. I get close to 40G 64 byte packets, but
> the forth port does is about 70% of wire rate because of the PCIe hardware
> bottle neck problem.
>
> Keith Wiles, Principal Technologist for Networking member of the CTO office,
> Wind River
> direct 972.434.4136 mobile 940.213.5533 fax 000.000.0000
>
> On Nov 19, 2013, at 10:09 AM, jinho hwang <hwang.jinho at gmail.com> wrote:
>
> Hi All,
>
> I have two NICs (82599) x two ports that are used as packet generators. I
> want to generate full line-rate packets (40Gbps), but Pktgen-DPDK does not
> seem to be able to do it when two port in a NIC are used simultaneously.
> Does anyone know how to generate 40Gbps without replicating packets in the
> switch?
>
> Thank you,
>
> Jinho
>
>
Hi Keith,
Thank you for the e-mail. I am not sure how I figure out whether my
PCIe also has any problems to prevent me from sending full line-rates.
I use Intel(R) Xeon(R) CPU E5649 @ 2.53GHz. It is hard for
me to figure out where is the bottleneck.
My configuration is:
sudo ./app/build/pktgen -c 1ff -n 3 $BLACK-LIST -- -p 0xf0 -P -m
"[1:2].0, [3:4].1, [5:6].2, [7:8].3" -f test/forward.lua
=== port to lcore mapping table (# lcores 9) ===
lcore: 0 1 2 3 4 5 6 7 8
port 0: D: T 1: 0 0: 1 0: 0 0: 0 0: 0 0: 0 0: 0 0: 0 = 1: 1
port 1: D: T 0: 0 0: 0 1: 0 0: 1 0: 0 0: 0 0: 0 0: 0 = 1: 1
port 2: D: T 0: 0 0: 0 0: 0 0: 0 1: 0 0: 1 0: 0 0: 0 = 1: 1
port 3: D: T 0: 0 0: 0 0: 0 0: 0 0: 0 0: 0 1: 0 0: 1 = 1: 1
Total : 0: 0 1: 0 0: 1 1: 0 0: 1 1: 0 0: 1 1: 0 0: 1
Display and Timer on lcore 0, rx:tx counts per port/lcore
Configuring 4 ports, MBUF Size 1984, MBUF Cache Size 128
Lcore:
1, type RX , rx_cnt 1, tx_cnt 0 private (nil), RX (pid:qid): (
0: 0) , TX (pid:qid):
2, type TX , rx_cnt 0, tx_cnt 1 private (nil), RX (pid:qid): ,
TX (pid:qid): ( 0: 0)
3, type RX , rx_cnt 1, tx_cnt 0 private (nil), RX (pid:qid): (
1: 0) , TX (pid:qid):
4, type TX , rx_cnt 0, tx_cnt 1 private (nil), RX (pid:qid): ,
TX (pid:qid): ( 1: 0)
5, type RX , rx_cnt 1, tx_cnt 0 private (nil), RX (pid:qid): (
2: 0) , TX (pid:qid):
6, type TX , rx_cnt 0, tx_cnt 1 private (nil), RX (pid:qid): ,
TX (pid:qid): ( 2: 0)
7, type RX , rx_cnt 1, tx_cnt 0 private (nil), RX (pid:qid): (
3: 0) , TX (pid:qid):
8, type TX , rx_cnt 0, tx_cnt 1 private (nil), RX (pid:qid): ,
TX (pid:qid): ( 3: 0)
Port :
0, nb_lcores 2, private 0x6fd5a0, lcores: 1 2
1, nb_lcores 2, private 0x700208, lcores: 3 4
2, nb_lcores 2, private 0x702e70, lcores: 5 6
3, nb_lcores 2, private 0x705ad8, lcores: 7 8
Initialize Port 0 -- TxQ 1, RxQ 1, Src MAC 90:e2:ba:2f:f2:a4
Create: Default RX 0:0 - Memory used (MBUFs 1024 x (size 1984 +
Hdr 64)) + 395392 = 2435 KB
Create: Default TX 0:0 - Memory used (MBUFs 1024 x (size 1984 +
Hdr 64)) + 395392 = 2435 KB
Create: Range TX 0:0 - Memory used (MBUFs 1024 x (size 1984 +
Hdr 64)) + 395392 = 2435 KB
Create: Sequence TX 0:0 - Memory used (MBUFs 1024 x (size 1984 +
Hdr 64)) + 395392 = 2435 KB
Create: Special TX 0:0 - Memory used (MBUFs 64 x (size 1984 +
Hdr 64)) + 395392 = 515 KB
Port memory used = 10251 KB
Initialize Port 1 -- TxQ 1, RxQ 1, Src MAC 90:e2:ba:2f:f2:a5
Create: Default RX 1:0 - Memory used (MBUFs 1024 x (size 1984 +
Hdr 64)) + 395392 = 2435 KB
Create: Default TX 1:0 - Memory used (MBUFs 1024 x (size 1984 +
Hdr 64)) + 395392 = 2435 KB
Create: Range TX 1:0 - Memory used (MBUFs 1024 x (size 1984 +
Hdr 64)) + 395392 = 2435 KB
Create: Sequence TX 1:0 - Memory used (MBUFs 1024 x (size 1984 +
Hdr 64)) + 395392 = 2435 KB
Create: Special TX 1:0 - Memory used (MBUFs 64 x (size 1984 +
Hdr 64)) + 395392 = 515 KB
Port memory used = 10251 KB
Initialize Port 2 -- TxQ 1, RxQ 1, Src MAC 90:e2:ba:4a:e6:1c
Create: Default RX 2:0 - Memory used (MBUFs 1024 x (size 1984 +
Hdr 64)) + 395392 = 2435 KB
Create: Default TX 2:0 - Memory used (MBUFs 1024 x (size 1984 +
Hdr 64)) + 395392 = 2435 KB
Create: Range TX 2:0 - Memory used (MBUFs 1024 x (size 1984 +
Hdr 64)) + 395392 = 2435 KB
Create: Sequence TX 2:0 - Memory used (MBUFs 1024 x (size 1984 +
Hdr 64)) + 395392 = 2435 KB
Create: Special TX 2:0 - Memory used (MBUFs 64 x (size 1984 +
Hdr 64)) + 395392 = 515 KB
Port memory used = 10251 KB
Initialize Port 3 -- TxQ 1, RxQ 1, Src MAC 90:e2:ba:4a:e6:1d
Create: Default RX 3:0 - Memory used (MBUFs 1024 x (size 1984 +
Hdr 64)) + 395392 = 2435 KB
Create: Default TX 3:0 - Memory used (MBUFs 1024 x (size 1984 +
Hdr 64)) + 395392 = 2435 KB
Create: Range TX 3:0 - Memory used (MBUFs 1024 x (size 1984 +
Hdr 64)) + 395392 = 2435 KB
Create: Sequence TX 3:0 - Memory used (MBUFs 1024 x (size 1984 +
Hdr 64)) + 395392 = 2435 KB
Create: Special TX 3:0 - Memory used (MBUFs 64 x (size 1984 +
Hdr 64)) + 395392 = 515 KB
Port memory used = 10251 KB
Total memory used = 41003 KB
Port 0: Link Up - speed 10000 Mbps - full-duplex <Enable promiscuous mode>
Port 1: Link Up - speed 10000 Mbps - full-duplex <Enable promiscuous mode>
Port 2: Link Up - speed 10000 Mbps - full-duplex <Enable promiscuous mode>
Port 3: Link Up - speed 10000 Mbps - full-duplex <Enable promiscuous mode>
=== Display processing on lcore 0
=== RX processing on lcore 1, rxcnt 1, port/qid, 0/0
=== TX processing on lcore 2, txcnt 1, port/qid, 0/0
=== RX processing on lcore 3, rxcnt 1, port/qid, 1/0
=== TX processing on lcore 4, txcnt 1, port/qid, 1/0
=== RX processing on lcore 5, rxcnt 1, port/qid, 2/0
=== TX processing on lcore 6, txcnt 1, port/qid, 2/0
=== RX processing on lcore 7, rxcnt 1, port/qid, 3/0
=== TX processing on lcore 8, txcnt 1, port/qid, 3/0
Please, advise me if you have time.
Thank you always for your help!
Jinho
