[dpdk-users] [pktgen] pktgen Tx/Rx rates are not the same in loopback testing case
Paul Tsvika
mozloverinweb at gmail.com
Sat Jul 22 03:49:29 CEST 2017
Thanks Keith.
Let me post my questions again and inline the text.
---------------------------------------------------------------------------------------------------------------
Hi developers,
Below is my hardware configuration:
Memory: 32G ( 16 G on two channels )
CPU: Xeon-D 1557
NIC: Intel X552/X557 10GBASE-T
CPU layout: ( Graph generated from cpu_layout.py )
Core and Socket Information (as reported by '/proc/cpuinfo')
============================================================
*cores = [0, 1, 2, 3, 4, 5, 8, 9, 10, 11, 12, 13]sockets = [0]
Socket 0 -------- Core 0 [0, 12] Core 1 [1,
13] Core 2 [2, 14] Core 3 [3, 15] Core 4 [4,
16] Core 5 [5, 17] Core 8 [6, 18] Core 9 [7,
19] Core 10 [8, 20] Core 11 [9, 21] Core 12 [10,
22] Core 13 [11, 23]*
=============================================================
My motherboard has 2 10G ports so that I set up the testing experiment in
loopback.
I have compiled DPDK successfully and below is the steps how I configured
pktgen
$ sudo modprobe uio
$ sudo insmod ./build/kmod/igb_uio.ko
$ sudo ./usertools/dpdkdevbind.py -b igb_uio xxx:xx.0 xxx:xx.1
$ sudo ./app/pktgen -c 0x1f -n 2 -- -P -m "[1:3].0, [2:4].1"
<pktgen> start 0
I use core 1 and core 3 work for port 0 tx/rx respectively. Core 2 and core
4 work for port 1 tx/rx respectively.
I have some questions listed below:
1.
I checked other developers who run pktgen successfully should get the TX/RX
rate almost the same and the value should hit 10000 or 99xx.
I have not figured out yet why the rate went down when I run pktgen.
* Flags:Port : P--------------:0 P--------------:1
10318718/0Link State : <UP-10000-FD> <UP-10000-FD>
----TotalRate----Pkts/s Max/Rx : 0/0
10318848/8096382 10318848/8096382 Max/Tx :
14880683/11528400 0/0 14880683/11528400MBits/s
Rx/Tx : 0/7747 5440/0
5440/7747Broadcast : 0
0Multicast : 0 0 64
Bytes : 0 4603033247 65-127
: 0 0 128-255
: 0 0 256-511
: 0 0 512-1023
: 0 0 1024-1518
: 0 0Runts/Jumbos
: 0/0 0/0Errors Rx/Tx
: 0/0 0/0Total Rx Pkts
: 0 4596736394 Tx Pkts :
6588970508 0 Rx MBs :
0 3089006 Tx MBs :
4427788 0ARP/ICMP Pkts :
0/0 0/0Tx Count/% Rate : Forever /100%
Forever /100%Pattern Type : abcd... abcd...Tx
Count/% Rate : Forever /100% Forever /100%PktSize/Tx Burst
: 64 / 32 64 / 32 -------------------Src/Dest
Port : 1234 / 5678 1234 / 5678sPkt Type:VLAN ID :
IPv4 / TCP:0001 IPv4 / TCP:0001Dst IP Address :
192.168.1.1 192.168.0.1Src IP Address : 192.168.0.1/24
<http://192.168.0.1/24> 192.168.1.1/24 <http://192.168.1.1/24>
-------------------Dst MAC Address : 0c:c4:7a:c5:43:7b
0c:c4:7a:c5:43:7a-- Pktgen Ver: 3.3: 8086:15ad/03:00.0
8086:15ad/03:00.1 -------------------*
2.1
My start_log below:
Copyright (c) <2010-2017>, Intel Corporation. All rights reserved.
Pktgen created by: Keith Wiles -- >>> Powered by Intel® DPDK <<<
>>> Packet Burst 32, RX Desc 512, TX Desc 1024, mbufs/port 8192, mbuf cache
1024
*[PT]: looks like packet size is 32, should it suppose to be 64? Can I
configure it?*
*Also, why RX Desc and TX Desc is not the same ?*
=== port to lcore mapping table (# lcores 5) ===
lcore: 0 1 2 3 4 Total
port 0: ( D: T) ( 1: 0) ( 0: 0) ( 0: 1) ( 0: 0) = ( 1: 1)
port 1: ( D: T) ( 0: 0) ( 1: 0) ( 0: 0) ( 0: 1) = ( 1: 1)
Total : ( 0: 0) ( 1: 0) ( 1: 0) ( 0: 1) ( 0: 1)
Display and Timer on lcore 0, rx:tx counts per port/lcore
Configuring 2 ports, MBUF Size 2176, MBUF Cache Size 1024
Lcore:
1, RX-Only
RX_cnt( 1): (pid= 0:qid= 0)
2, RX-Only
RX_cnt( 1): (pid= 1:qid= 0)
3, TX-Only
TX_cnt( 1): (pid= 0:qid= 0)
4, TX-Only
TX_cnt( 1): (pid= 1:qid= 0)
Port :
0, nb_lcores 2, private 0x986ec0, lcores: 1 3
1, nb_lcores 2, private 0x989220, lcores: 2 4
** Default Info (0000:03:00.0, if_index:0) **
max_vfs : 0, min_rx_bufsize :1024, max_rx_pktlen : 15872
max_rx_queues : 128, max_tx_queues : 64
max_mac_addrs : 128, max_hash_mac_addrs:4096, max_vmdq_pools: 64
rx_offload_capa: 79, tx_offload_capa : 191, reta_size : 512,
flow_type_rss_offloads:0000000000038d34
vmdq_queue_base: 0, vmdq_queue_num : 128, vmdq_pool_base: 0
** RX Conf **
pthresh : 8, hthresh : 8, wthresh : 0
Free Thresh : 32, Drop Enable : 0, Deferred Start : 0
** TX Conf **
pthresh : 32, hthresh : 0, wthresh : 0
Free Thresh : 32, RS Thresh : 32, Deferred Start : 0,
TXQ Flags:00000f01
Create: Default RX 0:0 - Memory used (MBUFs 8192 x (size 2176 + Hdr
128)) + 192 = 18433 KB headroom 128 2176
Set RX queue stats mapping pid 0, q 0, lcore 1
Create: Default TX 0:0 - Memory used (MBUFs 8192 x (size 2176 + Hdr
128)) + 192 = 18433 KB headroom 128 2176
Create: Range TX 0:0 - Memory used (MBUFs 8192 x (size 2176 + Hdr
128)) + 192 = 18433 KB headroom 128 2176
Create: Sequence TX 0:0 - Memory used (MBUFs 8192 x (size 2176 + Hdr
128)) + 192 = 18433 KB headroom 128 2176
Create: Special TX 0:0 - Memory used (MBUFs 64 x (size 2176 + Hdr
128)) + 192 = 145 KB headroom 128 2176
Port
memory used = 73873 KB
Initialize Port 0 -- TxQ 1, RxQ 1, Src MAC 0c:c4:7a:c5:43:7a
** Default Info (0000:03:00.1, if_index:0) **
max_vfs : 0, min_rx_bufsize :1024, max_rx_pktlen : 15872
max_rx_queues : 128, max_tx_queues : 64
max_mac_addrs : 128, max_hash_mac_addrs:4096, max_vmdq_pools: 64
rx_offload_capa: 79, tx_offload_capa : 191, reta_size : 512,
flow_type_rss_offloads:0000000000038d34
vmdq_queue_base: 0, vmdq_queue_num : 128, vmdq_pool_base: 0
** RX Conf **
pthresh : 8, hthresh : 8, wthresh : 0
Free Thresh : 32, Drop Enable : 0, Deferred Start : 0
** TX Conf **
pthresh : 32, hthresh : 0, wthresh : 0
Free Thresh : 32, RS Thresh : 32, Deferred Start : 0,
TXQ Flags:00000f01
Create: Default RX 1:0 - Memory used (MBUFs 8192 x (size 2176 + Hdr
128)) + 192 = 18433 KB headroom 128 2176
Set RX queue stats mapping pid 1, q 0, lcore 2
Create: Default TX 1:0 - Memory used (MBUFs 8192 x (size 2176 + Hdr
128)) + 192 = 18433 KB headroom 128 2176
Create: Range TX 1:0 - Memory used (MBUFs 8192 x (size 2176 + Hdr
128)) + 192 = 18433 KB headroom 128 2176
Create: Sequence TX 1:0 - Memory used (MBUFs 8192 x (size 2176 + Hdr
128)) + 192 = 18433 KB headroom 128 2176
Create: Special TX 1:0 - Memory used (MBUFs 64 x (size 2176 + Hdr
128)) + 192 = 145 KB headroom 128 2176
Port
memory used = 73873 KB
Initialize Port 1 -- TxQ 1, RxQ 1, Src MAC 0c:c4:7a:c5:43:7b
Total
memory used = 147746 KB
Port 0: Link Down <Enable promiscuous mode>
*[PT]: I don't know why the Port ) went down at this point. Is there any
other thing I should check ?*
Port 1: Link Up - speed 10000 Mbps - full-duplex <Enable promiscuous mode>
pktgen_packet_capture_init: mz->len 4194304
=== Display processing on lcore 0
RX processing lcore: 1 rx: 1 tx: 0
For RX found 1 port(s) for lcore 1
RX processing lcore: 2 rx: 1 tx: 0
For RX found 1 port(s) for lcore 2
TX processing lcore: 3 rx: 0 tx: 1
For TX found 1 port(s) for lcore 3
TX processing lcore: 4 rx: 0 tx: 1
For TX found 1 port(s) for lcore 4
Thanks for any feedback.
--
P.T
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